Find the Right Radon Professional for Your Foothills Home

Name: Foothills Radon Testing and Mitigation
Address: Pine, CO, 80470, US
Telephone: (303) 816-3130
Price range: $$

Foothills Radon Testing and Mitigation helps Colorado foothills homeowners connect with carefully vetted, NRPP-certified radon professionals for testing, mitigation, and related services — based on your location and your needs. We don't just send your information to random contractors; we evaluate the professionals we work with so you don't have to sort through dozens of companies on your own. Our service is free for homeowners — the professionals compensate us, so your rates stay competitive.

Serving Pine, Conifer, Evergreen, Bailey, Morrison, and every town along the HWY 285 corridor in Jefferson County and Park County, Colorado. The entire state is EPA Radon Zone 1, and the average Colorado home tests at 6.4 pCi/L — nearly five times the national average. Call (303) 816-3130 or request a free estimate. We respond within 2 business hours. Mon–Sat, 8:00am – 6:00pm.

Our Radon Services

Towns We Serve Along the 285 Corridor

Colorado Radon Facts

Colorado is in the top 10 states for radon levels nationwide.
The average Colorado home tests at 6.4 pCi/L — nearly 5× the national average of 1.3 pCi/L.
50% of Colorado homes test above the EPA action level of 4.0 pCi/L.
The entire state is EPA Radon Zone 1 (highest risk category).
Radon is the #2 cause of lung cancer in the U.S. behind smoking.

Radon FAQ: Answers for Colorado Homeowners

The most common questions foothills homeowners ask about radon, testing, mitigation, and how our free connection service works — answered in plain English.

What is radon?

Radon is a colorless, odorless, radioactive gas that comes from the natural breakdown of uranium in soil and rock. Colorado's granite bedrock contains elevated levels of uranium, and as it decays it releases radon that enters homes through foundation cracks and openings. It's the second leading cause of lung cancer in the U.S. behind smoking.

Why is radon such a big deal in Colorado?

Colorado sits on uranium-bearing granite, the average home tests at 6.4 pCi/L (nearly 5× the national average), 50% of homes exceed the EPA action level of 4.0 pCi/L, and the entire state is EPA Radon Zone 1. Jefferson County and Park County foothills homes test on the upper end of the state range.

How long does a radon test take?

Short-term tests run 2–7 days using a continuous monitor; long-term tests run 90+ days for the most accurate year-round picture. For real estate transactions, a 48-hour short-term test is the standard.

How does radon mitigation work?

Sub-slab depressurization (SSD) is the gold standard. We core a hole through the slab, insert a suction point, and run PVC piping to a quiet exterior fan that vents radon-laden soil gas above the roofline before it enters your living space. Most installs complete in one day and reduce radon by 90% or more.

How much does radon mitigation cost in Colorado?

A typical residential system on the Front Range runs $1,500–$3,500, depending on foundation type, fan capacity, and pipe routing. You should receive a firm written estimate before any work begins.

Is the Foothills Radon connection service free?

Yes. Our service costs homeowners nothing. The professionals we work with compensate us for the connection — not you — so your rates stay competitive with the local market. You get our careful vetting and matching at no extra cost.

Does Colorado require radon disclosure in real estate?

Yes. Colorado law requires sellers to disclose known radon test results and any radon mitigation system. Testing isn't mandatory, but most foothills buyers request it during the inspection period.

Read the complete radon FAQ for more answers on testing, mitigation, geology, health risks, and choosing a radon professional.

About Foothills Radon Testing and Mitigation

Foothills Radon Testing and Mitigation is a connection and referral service based in Pine, Colorado. We help homeowners, buyers, sellers, and realtors in the Jefferson County and Park County foothills connect with carefully vetted, independent radon professionals. We are not a licensed radon mitigation contractor — we don't perform the testing or mitigation work ourselves. What we do is evaluate the professionals we choose to work with, maintain relationships with selected providers, and help connect you with the right professional based on your location and service needs. And because the professionals we work with compensate us for the connection, our service costs homeowners nothing — your rates stay competitive with the local market. More about us.

How It Works

Tell us what you need. Submit a quick request with your ZIP code, foundation type, and what's going on — or just call us.
We review your request. We consider your location and the type of service you need, and we think about which of our carefully vetted professionals is the right fit.
We help connect you. We connect you with an independent radon professional from the providers we work with — someone who serves your area and handles the service you need.
The provider handles the service. The independent professional discusses your project, scheduling, pricing, and performs the actual work. They carry the applicable credentials, insurance, and warranties.

Our role is to help simplify finding a qualified professional. We do not perform the radon services ourselves, and individual providers are responsible for their own work, estimates, and agreements. See the full process.

Our Radon Services

We help connect homeowners, buyers, sellers, realtors, builders, and businesses with carefully vetted professionals for every phase of radon — from your first test to long-term system maintenance.

Radon Testing — Short-term and long-term EPA-compliant testing for foothills homes and real estate transactions.
Radon Mitigation — Sub-slab depressurization systems designed for foothills foundations. Most installs complete in one day.
Crawl Space Encapsulation — Vapor barriers and sub-membrane depressurization for dirt and stone crawl spaces common in older foothills homes.
Radon Fan Replacement & Repair — Quiet, efficient replacement fans and system repairs for any existing radon system.
Post-Mitigation Testing — Independent follow-up testing to confirm your system brought radon below the action level.
New Construction Radon Prevention — Passive and active-ready radon systems built in during construction for a fraction of a retrofit.
Real Estate Radon Services — Fast testing, mitigation, and transferable warranties for buyers, sellers, and realtors.
Commercial Radon Services — Testing and mitigation for schools, offices, daycares, and commercial buildings.

Browse all radon services.

Service Areas Along the 285 Corridor

We're locally based in Pine, Colorado, and we help connect homeowners with radon professionals throughout Colorado's mountain communities and Front Range foothills. Our coverage follows Highway 285 as it climbs from the Denver metro into the Jefferson County foothills, then south into Park County — plus Idaho Springs along I-70. It's a tight, coherent geographic cluster of mountain communities all sitting on the same uranium-bearing granite that drives Colorado's radon problem.

Jefferson County: Evergreen, Conifer, Morrison, Kittredge, Indian Hills, Genesee, Aspen Park, and Idledale.
Park County: Pine, Bailey, Shawnee, Grant, and Aspen Park.
Clear Creek County: Idaho Springs.

Not sure if you're in our area? If you're in the Jefferson County or Park County foothills — or anywhere along the 285 corridor — give us a call. We respond within 2 business hours. See our service area or browse all locations.

Our Vetting Process

We don't just send your information to random contractors. We have a documented process for evaluating the radon professionals we choose to work with — not marketing fluff, but the actual factors we consider:

Initial evaluation — background, years in the radon industry, and track record in our foothills communities.
Credential verification — NRPP (National Radon Proficiency Program) certification confirmed active and in good standing.
Insurance confirmation — liability insurance for the services performed, with certificates available on request.
Reputation review — customer ratings, complaint records, and a history of standing behind their work.
Ongoing evaluation — we continuously monitor providers based on homeowner feedback, work quality, and responsiveness.

Requirements may vary by service and provider, and individual qualifications are verified where applicable. Read our full vetting process.

Credentials & Guarantees

Radon is the second leading cause of lung cancer in the United States, so we connect foothills homeowners exclusively with carefully vetted, NRPP-certified radon professionals who back their work with a 20-year low radon guarantee and decades of real-world experience. Every contractor in our network carries liability insurance, maintains high customer ratings, and offers fully transferable written warranties — a genuine selling point in a state where Colorado radon disclosure is legally required. These credentials belong to the individual providers, not to Foothills Radon Testing and Mitigation itself; we are a connection service, and the professionals we work with hold the certifications. View credentials & guarantees.

Radon Blog & Educational Articles

Colorado radon resources — testing, mitigation, geology, real estate, and health. Educational articles written for foothills homeowners.

Radon Levels in the Colorado Foothills: What the Data Really Says

Colorado ranks in the top 10 states for radon, and the foothills test on the high end. Here's what the data says about your home along the 285 corridor.

Colorado's radon problem in numbers

Colorado sits firmly in the top 10 states for radon levels nationwide. The average Colorado home tests at 6.4 pCi/L — nearly five times the national average of 1.3 pCi/L. Roughly half of all Colorado homes come in above the EPA action level of 4.0 pCi/L, and the entire state is classified as EPA Radon Zone 1, the highest risk category. These aren't outliers; they're the norm.

Why the foothills test even higher

The Front Range and foothills sit on the Pikes Peak Batholith — a massive granite formation rich in uranium-bearing minerals. As uranium decays underground, it releases radon gas that travels through fractured rock and soil into homes. Jefferson County and Park County foothills homes, built directly on this granite at high elevations, tend to test on the upper end of the state range. Towns like Evergreen, Conifer, Pine, and Bailey consistently show elevated readings.

What elevation has to do with it

Elevation doesn't create radon, but it amplifies the conditions that let it enter homes. At 7,000 to 8,000+ feet, foothills homes sit close to fractured bedrock with thin soil cover. The stack effect — warm indoor air rising and pulling soil gas up through the foundation — is stronger in cold mountain climates. Combined with basement foundations common in the area, the result is a high radon potential that's geology, not luck.

What this means for your home

If you live anywhere along the HWY 285 corridor, testing is the only way to know your level — radon is invisible, odorless, and tasteless. A short-term test takes a few days and gives you a defensible number. If your reading is above 4.0 pCi/L, the EPA recommends mitigation; many professionals recommend it above 2.0 pCi/L. The good news: a properly designed sub-slab depressurization system typically brings levels well below 2.0 pCi/L, and most installations complete in a single day.

The bottom line

The foothills' high radon levels aren't a fluke — they're a geological reality. But they're also a solvable problem. Test your home, understand your number, and if it's high, mitigate. Foothills Radon Testing and Mitigation has installed hundreds of systems across Jefferson and Park Counties, and our follow-up tests consistently show dramatic reductions. Your home can be safe; the first step is knowing your number.

Radon Levels in the Colorado Foothills: What the Data Really Says — Frequently Asked Questions

What is the average radon level in Colorado?: The average Colorado home tests at 6.4 pCi/L, nearly five times the national average of 1.3 pCi/L. About half of Colorado homes test above the EPA action level of 4.0 pCi/L.
Why do foothills homes have higher radon?: The foothills sit on granite and uranium-bearing rock that releases radon as it decays. High elevation, thin soil, and basement foundations let that gas enter homes easily.
What radon level should concern me?: The EPA action level is 4.0 pCi/L. Many professionals recommend mitigation above 2.0 pCi/L because there is no truly safe level of radon exposure.

Read the full article: Radon Levels in the Colorado Foothills: What the Data Really Says

What Does Radon Mitigation Cost in Colorado? A Honest Breakdown

Radon mitigation on the Front Range typically runs $1,500–$3,500. Here's an honest breakdown of what drives the price and what you should get for it.

The short answer

On the Front Range and in the foothills, a radon mitigation system typically costs between $1,500 and $3,500. The range reflects your foundation type, the fan required, pipe routing complexity, and whether crawl space encapsulation is needed. At Foothills Radon Testing and Mitigation, we give you a firm written estimate before any work begins — no surprise charges.

What drives the cost

The biggest factor is your foundation. A simple basement with a single suction point is the most straightforward and least expensive. Homes with crawl spaces often need encapsulation and sub-membrane depressurization, which adds material and labor. Combination foundations (basement plus crawl space) require more design and piping. Fan selection matters too — larger or more challenging soil conditions may require a higher-capacity fan. Finally, pipe routing through finished spaces or around architectural features can add labor.

What's included in a quality system

A properly installed system includes a core hole through the slab, a suction point, sealed PVC piping routed to an exterior fan, venting above the roofline, a manometer so you can verify operation, electrical connection for the fan, and a written warranty. You should also receive a clear explanation of how the system works and a recommendation for post-installation testing. If any of these are missing, ask why.

What's not included (and shouldn't be)

A fair mitigation quote shouldn't hide fees. Electrical work for the fan is sometimes handled by an electrician rather than the mitigator; we'll tell you upfront if that's the case and what it costs. Post-installation testing is a separate, small cost. Crawl space encapsulation, if needed, is scoped separately. The key is transparency — you should know the total before we start.

Is it worth it?

Radon is the second leading cause of lung cancer in the United States, behind smoking. A mitigation system is a one-time investment that protects your family for decades, runs quietly on a few dollars of electricity a month, and adds a documented safety feature to your home. For most foothills homeowners, the cost is a small price for clean indoor air — and it's far cheaper than the alternative.

What Does Radon Mitigation Cost in Colorado? A Honest Breakdown — Frequently Asked Questions

How much does radon mitigation cost in Colorado?: Typically $1,500 to $3,500 on the Front Range, depending on foundation type, fan requirements, and pipe routing. We provide a firm written estimate before any work begins.
Does homeowners insurance cover radon mitigation?: Generally no — radon mitigation is considered a home improvement, not a covered repair. However, it's an investment that adds value and safety to your home.
Is a more expensive system better?: Not necessarily. A well-designed system sized to your home and soil is what matters. We size the fan and suction points to your specific conditions — you pay for what you need, not more.

Read the full article: What Does Radon Mitigation Cost in Colorado? A Honest Breakdown

Colorado's Radon Geology: Why the Front Range Is Built on a Gas Source

The Front Range's granite and uranium-bearing rock are the geologic engine behind Colorado's radon problem. Here's the plain-English geology.

Radon starts with uranium

Radon is a radioactive gas that comes from the natural decay of uranium found in soil and rock. Uranium is present in trace amounts all over the earth, but some rocks contain far more than others. When uranium decays, it produces radium, and when radium decays, it releases radon gas. That gas then moves up through soil and fractured rock and can enter homes through foundation cracks and openings.

The Pikes Peak Batholith

Much of the Colorado Front Range and foothills sits on the Pikes Peak Batholith — a vast body of granite that formed over a billion years ago. This granite is naturally enriched in uranium compared to most rocks. The same geology that makes the foothills visually stunning — exposed granite outcrops, dramatic rock faces, and rugged terrain — is exactly what makes it a radon hotspot.

Fractured rock and soil gas

Granite itself is fairly impermeable, but the foothills' rock is heavily fractured — cracked by tectonic forces, weathering, and freeze-thaw cycles over millennia. These fractures create pathways for radon-bearing soil gas to rise from depth. In areas with thin soil cover, which is common at high elevations, that gas reaches home foundations quickly and easily.

Why elevation matters

At 7,000 to 8,000+ feet, foothills homes sit close to the bedrock with less soil to filter and slow the gas. The cold mountain climate also strengthens the stack effect — warm indoor air rising creates negative pressure at the foundation, actively pulling soil gas (and radon) into the home. Basements, common in the foothills, put living space closest to the source.

What this means practically

None of this is a reason to fear living in the foothills — it's a reason to test. The geology isn't going to change, but a properly installed mitigation system makes your indoor air safe regardless of what's beneath your home. Understanding the geology helps explain why every foothills home should be tested, and why a well-designed system is so effective at interrupting the gas pathway.

Colorado's Radon Geology: Why the Front Range Is Built on a Gas Source — Frequently Asked Questions

Why does Colorado have so much radon?: Colorado's Front Range sits on uranium-bearing granite, especially the Pikes Peak Batholith. As uranium decays, it releases radon gas that enters homes through foundations.
Does the granite in my yard mean I have radon?: It means you have high radon potential. The only way to know your actual level is to test — radon varies home to home even in the same neighborhood.
Can the geology change over time?: Not on a human timescale. The uranium-bearing rock beneath the foothills has been there for over a billion years. What you can change is how your home handles the gas — that's what mitigation does.

Read the full article: Colorado's Radon Geology: Why the Front Range Is Built on a Gas Source

Colorado Radon Disclosure Laws: What Homeowners, Buyers, Sellers & Realtors Need to Know

The definitive guide to Colorado's radon disclosure requirements — what the law requires for sellers, buyers, and realtors, transaction timelines, and how to keep your closing on track.

What Colorado law actually requires

Colorado law requires sellers to disclose known radon test results and the presence of any radon mitigation system in the property. This is part of the standard seller's property disclosure form. The key word is 'known' — if you've tested your home and have a result, or if a mitigation system is installed, you must share that information with prospective buyers. You are not required to test if you haven't, but you must be honest about what you do know.

The source: Colorado's radon disclosure statute

Colorado's disclosure requirement stems from the state's real estate disclosure framework, which classifies radon as an environmental hazard that sellers must disclose if known. Unlike some states, Colorado does not mandate radon testing as a condition of sale — but once a seller has knowledge of a radon level or system, nondisclosure can create legal liability. This is why most foothills agents treat radon testing as a standard, expected part of the inspection period even though the law doesn't force it.

The transaction timeline

A typical radon contingency runs like this: the buyer orders a 48-hour short-term continuous monitor test during the inspection period. If the result is above 4.0 pCi/L, the buyer can request mitigation as a condition of the sale. The seller then has a window — often 5 to 10 days — to have a system installed and a post-install test run before the closing date. In a Zone 1 state where the average home tests at 6.4 pCi/L, radon testing is a standard part of most foothills inspection periods. We compress this timeline aggressively, often completing testing, mitigation, and post-install verification within the contingency window.

What sellers need to do

If you've ever tested your home for radon, disclose the results — even if they were low. If a mitigation system is installed, disclose it, including any warranty information that may transfer to the buyer. A documented, warranted mitigation system is a selling point: it shows a known foothills issue has been professionally addressed. If you've never tested, you can honestly state that, though many buyers will request a test during their inspection period. Consider pre-listing testing so you can disclose with confidence or address any issue proactively rather than under a closing deadline.

What buyers should request

As a buyer in a Zone 1 state like Colorado, you have the right to request a radon test during your inspection period — and you should. A 48-hour short-term continuous monitor test gives you a defensible number. Don't rely on the seller's prior results, since radon levels can change over time and with home modifications. If the result is above 4.0 pCi/L, you can negotiate mitigation as part of the sale. A properly installed, warranted system usually satisfies the contingency and lets the closing proceed.

What realtors need to know

Realtors play a key role in ensuring disclosure compliance and managing radon contingencies. Ensure sellers complete the disclosure accurately, advise buyers to request a radon test during inspection, and work with a mitigation company that understands real estate timelines. A high radon reading doesn't have to derail a sale — a fast, professional mitigation system with a transferable warranty usually satisfies the contingency and keeps the closing on schedule. Many foothills agents build radon into their standard inspection process and partner with a reliable mitigator. Visit our realtor partner page to learn more.

How a mitigation system affects disclosure

If a mitigation system is installed — whether before listing or as a result of a buyer's contingency — it must be disclosed, along with any post-install test results and warranty information. This is a positive disclosure: it tells the buyer the home's radon has been professionally addressed. Foothills Radon Testing and Mitigation provides the documentation — signed reports, system specs, and warranty details — that makes this disclosure straightforward and gives buyers confidence.

Keeping deals compliant and moving

The disclosure law isn't a trap — it's a framework for honest transactions. Disclose what you know, test if you haven't, and address any elevated results professionally. Foothills Radon Testing and Mitigation supports every side of the transaction with fast testing, written reports, rapid mitigation, transferable warranties, and clear documentation. When everyone understands the rules and works with the right partners, radon becomes a manageable part of the sale, not a dealbreaker.

Colorado Radon Disclosure Laws: What Homeowners, Buyers, Sellers & Realtors Need to Know — Frequently Asked Questions

Is radon testing required to sell a home in Colorado?: Testing isn't mandatory, but disclosure of known radon levels and mitigation systems is required. Most buyers request a test during the inspection period, and it's strongly recommended in Zone 1 Colorado.
Do I have to disclose a mitigation system when selling?: Yes. If a radon mitigation system is installed, it must be disclosed along with any warranty information. This is a positive disclosure that shows the home's radon has been professionally addressed.
How fast can you test for a closing?: We typically schedule a 48-hour short-term continuous monitor test within a few days of contact, with a signed written report delivered shortly after retrieval — well inside most inspection windows.
Can you install mitigation before our closing date?: Yes — we prioritize real estate timelines and can often complete a mitigation installation within a week of a high test, with a post-install report for the transaction file.
Is the warranty transferable to the buyer?: Yes. Our mitigation systems come with a transferable warranty, which is a strong selling point and gives buyers confidence in the work.

Read the full article: Colorado Radon Disclosure Laws: What Homeowners, Buyers, Sellers & Realtors Need to Know

What to Do After a High Radon Test: A Step-by-Step Guide

A high radon test can be alarming, but it's a solvable problem. Here's a calm, step-by-step guide to what to do after an elevated radon reading.

First, don't panic

A high radon test is concerning, but it's not an emergency in the way a gas leak or fire is. Radon exposure is a long-term risk, not an acute one — it's years of exposure that matter, not days. You have time to understand your result, confirm it, and make a smart decision. Take a breath.

Confirm the result

If your high reading came from a short-term test, consider a follow-up — especially a long-term test of 90+ days — to confirm your year-round exposure. Radon fluctuates with weather, seasons, and ventilation, so a single short-term reading is a snapshot, not the full picture. That said, if your short-term result is very high (well above 4.0 pCi/L), there's little reason to delay mitigation while you wait for a long-term test.

Understand your number

The EPA action level is 4.0 pCi/L — above that, mitigation is strongly recommended. Many professionals, including us, recommend mitigation above 2.0 pCi/L because there's no truly safe level of radon, and radon is the second leading cause of lung cancer in the U.S. If you're a smoker or live with one, the risk is significantly higher, and action is even more urgent.

Get a professional assessment

Contact a certified radon mitigator for an assessment. They'll look at your foundation type, your radon level, your home's construction, and the best mitigation approach. A reputable company will give you a firm written estimate, explain the system in plain English, and never pressure you. At Foothills Radon Testing and Mitigation, we tell you honestly whether you need to mitigate now or can monitor first.

Mitigate and verify

If you decide to mitigate, a sub-slab depressurization system is the gold standard and typically completes in one day. After installation, run a post-mitigation test (wait at least 24 hours) to confirm your levels dropped. A properly designed system should bring radon well below 2.0 pCi/L. Then test every couple of years to make sure it stays there.

The bottom line

A high radon test is a problem with a proven solution. Confirm your number, understand what it means, get a professional assessment, and mitigate if warranted. You don't have to live with elevated radon — and once mitigated, your home is safe for the long haul.

What to Do After a High Radon Test: A Step-by-Step Guide — Frequently Asked Questions

Is a high radon test an emergency?: No. Radon is a long-term health risk, not an acute one. You have time to confirm the result and make a smart decision — but don't ignore it.
Should I confirm a high short-term test?: If your reading is very high (well above 4.0 pCi/L), there's little reason to delay mitigation. If it's borderline, a long-term test can confirm your year-round exposure before you decide.
How low will mitigation bring my radon?: A properly designed sub-slab depressurization system typically brings radon well below 2.0 pCi/L. We confirm every install with a post-mitigation test.

Read the full article: What to Do After a High Radon Test: A Step-by-Step Guide

Foundation Types and Radon: Basements, Crawl Spaces, and Slabs Compared

Your foundation type shapes both your radon risk and your mitigation approach. Here's how basements, crawl spaces, and slabs compare.

Why foundation type matters

Radon enters homes through the path of least resistance — cracks, joints, gaps, and porous materials where the house meets the soil. Your foundation type determines how much contact your home has with the ground and how easily soil gas can enter. It also determines how a mitigation system is designed. Understanding your foundation is the first step in understanding your radon risk.

Basements

Full basements put the most living space in direct contact with the soil, and they're common in foothills homes. Radon enters through slab cracks, the cold joint where the floor meets the wall, and around penetrations. Basements are also where radon tends to concentrate, since the gas is heavier than air and settles low. The good news: basements are ideal candidates for sub-slab depressurization, which is highly effective at interrupting the gas pathway beneath the slab.

Crawl spaces

Dirt or stone crawl spaces — common in older foothills homes — are essentially an open window into the earth beneath your home. Radon rises freely from the soil and enters the living space above through the floor. For these homes, encapsulation with a sealed vapor barrier plus sub-membrane depressurization (a fan pulling gas from beneath the barrier) is the gold standard. Concrete crawl spaces can sometimes be treated like a slab with sub-slab depressurization.

Slab-on-grade

Slab foundations have less soil contact than basements but are still vulnerable. Radon enters through slab cracks, expansion joints, and around plumbing penetrations. Sub-slab depressurization works on slabs too, though the suction point layout may differ. Slab homes in the foothills absolutely should be tested — lower contact doesn't mean no risk, especially on uranium-bearing geology.

Combination foundations

Many foothills homes, especially on sloped lots, have combination foundations — a basement under part of the house and a crawl space under another, or a walk-out basement with a slab addition. These require the most thoughtful mitigation design, often combining sub-slab and sub-membrane approaches. Foothills Radon Testing and Mitigation assesses each zone of your foundation and designs a system that addresses all of them.

The takeaway

Every foundation type can have radon, and every foundation type can be mitigated. What changes is the approach. The most important step is the same regardless of your foundation: test your home, understand your number, and work with a mitigator who designs the system around your specific foundation, not a one-size-fits-all template.

Foundation Types and Radon: Basements, Crawl Spaces, and Slabs Compared — Frequently Asked Questions

Which foundation type has the most radon risk?: Basements put the most living space in contact with soil and tend to concentrate radon, but dirt crawl spaces are also very vulnerable. Slabs have lower contact but aren't risk-free. Every type should be tested.
Can a slab home have high radon?: Yes. Slabs have less soil contact but radon still enters through cracks and joints. On Colorado's uranium-bearing geology, slab homes absolutely should be tested.
My home has both a basement and a crawl space — how is it mitigated?: Combination foundations need a tailored approach, often combining sub-slab depressurization for the basement and encapsulation with sub-membrane depressurization for the crawl space. We design for both zones.

Read the full article: Foundation Types and Radon: Basements, Crawl Spaces, and Slabs Compared

How Long Does Radon Mitigation Take? From Test to Clean Air

Most radon mitigation installs finish in one day. Here's the full timeline from first test to verified clean air, so you know what to expect.

The short answer

Most radon mitigation installations are complete in a single day. The broader timeline — from deciding to test to breathing verified clean air — is usually one to two weeks, depending on scheduling and whether you run a post-install test. Here's how it breaks down.

Step 1: Testing (2–7 days)

A short-term continuous monitor test runs 48 hours to 7 days. For homeowners not under a deadline, a long-term test of 90+ days gives the most accurate picture. We place the device, you maintain closed-house conditions, we retrieve it, and you get a written report with your pCi/L reading.

Step 2: Assessment and estimate (1–2 days)

Once you have a high result, we schedule an assessment — often we can do this quickly given our Pine base and the 285 corridor route. We inspect your foundation, discuss the best approach, and provide a firm written estimate. This step is usually just a day or two from your call.

Step 3: Installation (1 day, sometimes 2)

On install day, we arrive in the morning, lay down floor protection, core the slab, install the suction point and piping, mount the fan, and seal penetrations. Most jobs are done by late afternoon. Crawl space encapsulation or complex combination foundations may extend to a second day, but the vast majority of single-foundation homes are one-day installs.

Step 4: Post-install verification (2–7 days)

We recommend waiting at least 24 hours for the system to stabilize, then running a short-term test of 2 to 7 days to confirm your levels dropped. For real estate closings, this post-install test is often a contingency requirement, and we provide a signed written report. A properly designed system should bring radon well below 2.0 pCi/L.

Total timeline

For a homeowner not under a deadline, the full process from first test to verified clean air is typically one to two weeks. For real estate transactions, we compress the timeline aggressively — often completing testing, mitigation, and post-install verification within the inspection and contingency windows. Whatever your timeline, we communicate clearly so you always know what's happening and when.

How Long Does Radon Mitigation Take? From Test to Clean Air — Frequently Asked Questions

How long does the installation itself take?: Most installations are complete in a single day. Crawl space encapsulation or complex combination foundations may require a second day, but the majority of homes are one-day installs.
How soon after installation can I test?: Wait at least 24 hours for the system to stabilize, then run a 2 to 7 day short-term test to confirm your levels dropped below the action level.
Can you complete everything before my closing date?: In most cases yes. We prioritize real estate timelines and can often compress testing, mitigation, and post-install verification into the inspection window.

Read the full article: How Long Does Radon Mitigation Take? From Test to Clean Air

DIY vs. Professional Radon Testing: Which Is Right for You?

DIY radon test kits are cheap and useful, but professional testing has advantages — especially for real estate. Here's how to choose.

The case for DIY testing

DIY radon test kits — short-term charcoal canisters and long-term alpha-track devices — are inexpensive (often $15–$30) and available online or at hardware stores. For a homeowner who simply wants to know their number and isn't under a transaction deadline, a DIY kit is a reasonable first step. Follow the closed-house conditions instructions carefully, place the kit correctly, mail it to the lab, and you'll get a result.

Where DIY falls short

DIY kits have limitations. Placement errors, failure to maintain closed-house conditions, and lab turnaround time can all affect results. More importantly, DIY results are not accepted for real estate transactions — those require a certified tester and a continuous monitor that produces a defensible, timestamped report. DIY also can't provide the immediate, hourly data that a continuous monitor offers, which helps identify unusual readings or tampering.

The case for professional testing

A professional radon test uses an EPA-approved continuous monitor that records hourly readings, is placed correctly by a certified tester, and produces a signed written report suitable for transactions. The data is more robust, the placement is correct by default, and you get expert interpretation of what your number means. For real estate, professional testing isn't optional — it's required. For homeowners who want confidence in the result, it's the better choice.

When to choose which

Choose DIY if you're a homeowner screening your own home, you're not in a transaction, and you're comfortable following placement instructions carefully. Choose professional testing if you're buying or selling a home, you want a defensible written report, or you simply want confidence that the test was done right. Many homeowners start with a DIY kit and, if the result is high, call us for a professional confirmation and mitigation estimate.

The bottom line

Both approaches have a place. DIY kits are a cheap, accessible screening tool. Professional testing is the gold standard for accuracy, defensibility, and expert guidance. If your DIY result comes back high, don't wait — contact a certified mitigator for confirmation and a plan. The most important thing is that you test, however you do it.

DIY vs. Professional Radon Testing: Which Is Right for You? — Frequently Asked Questions

Are DIY radon test kits accurate?: They can be reasonably accurate if placed correctly and closed-house conditions are maintained. But placement errors and lab variability mean they're best as a screening tool, not a definitive measurement.
Can I use a DIY kit for a real estate transaction?: No. Real estate transactions require a certified tester and a continuous monitor that produces a defensible, timestamped report. DIY results aren't accepted.
What should I do if my DIY test comes back high?: Contact a certified radon mitigator for a professional assessment and estimate. You may also want a professional confirmation test, especially if the DIY result was borderline.

Read the full article: DIY vs. Professional Radon Testing: Which Is Right for You?

How to Read Radon Test Results: Understanding Your pCi/L Number

Your radon test came back with a number — now what? Here's a plain-English guide to understanding pCi/L and what your result means for your home.

What is pCi/L?

Radon levels are measured in picocuries per liter, abbreviated pCi/L. A picocurie is a unit of radioactivity, and pCi/L tells you how much radon is present in a liter of air. It's the standard unit used by the EPA and radon professionals. The higher the number, the more radon is in your home's air and the greater the long-term health risk.

The EPA action level: 4.0 pCi/L

The EPA has set 4.0 pCi/L as the action level — the point at which mitigation is strongly recommended. This isn't a hard safety threshold; it's the level at which the risk becomes significant enough that action is clearly warranted. It's also a pragmatic number, since reducing below 4.0 is achievable with standard mitigation in virtually any home.

Why many professionals recommend action above 2.0 pCi/L

There is no truly safe level of radon exposure — even levels below 4.0 pCi/L carry some risk. Many radon professionals, including us, recommend considering mitigation above 2.0 pCi/L, especially for long-term exposure. The World Health Organization recommends action above 2.7 pCi/L. If your result is between 2.0 and 4.0, it's worth a conversation about whether to mitigate now or monitor with a long-term test.

Putting your number in context

The average U.S. home tests at about 1.3 pCi/L. The average Colorado home tests at 6.4 pCi/L — nearly five times higher. If your result is, say, 8.0 or 12.0 pCi/L, you're not unusual for a foothills home, but you should mitigate. If your result is below 2.0, your home is in good shape — re-test every few years to make sure it stays there. If it's between 2.0 and 4.0, consider a long-term test to confirm your year-round exposure before deciding.

What to do with your number

If your result is above 4.0 pCi/L, contact a certified mitigator for an estimate — mitigation is strongly recommended. If it's between 2.0 and 4.0, consider a long-term confirmation test and have a conversation with a professional. If it's below 2.0, you're in good shape; test again every two to five years and after any major renovation. Whatever your number, we're happy to explain what it means and help you decide on next steps — no pressure, just straight talk.

How to Read Radon Test Results: Understanding Your pCi/L Number — Frequently Asked Questions

What is a safe radon level?: There is no truly safe level of radon. The EPA action level is 4.0 pCi/L, but many professionals recommend mitigation above 2.0 pCi/L because even lower levels carry some risk.
What does pCi/L mean?: pCi/L stands for picocuries per liter, the standard unit for measuring radon in air. The higher the number, the more radon is present and the greater the long-term risk.
My result is 3.0 pCi/L — should I mitigate?: It's worth a conversation. Many professionals recommend mitigation above 2.0 pCi/L. A long-term test can confirm your year-round exposure before you decide. We're happy to help you weigh it.

Read the full article: How to Read Radon Test Results: Understanding Your pCi/L Number

Does Radon Mitigation Really Work? What the Data Shows

Skeptical that a fan and some pipe can fix your radon problem? Here's what the data — and our own post-install tests — actually show.

The short answer: yes, it works

Radon mitigation is one of the most reliable home remediation measures there is. A properly designed sub-slab depressurization system typically reduces radon levels by 90% or more, often bringing readings from well above the EPA action level down below 2.0 pCi/L. This isn't marketing — it's what post-installation testing consistently shows, including our own results across hundreds of foothills homes.

How we know it works

Every reputable mitigation includes a post-installation test to verify performance. Across our installations in Jefferson and Park Counties, the vast majority of post-install tests come back below 2.0 pCi/L, often below 1.0 pCi/L, regardless of how high the original reading was. The EPA and independent studies confirm similar results nationwide. When a system is designed and installed correctly, it works.

What makes the difference between success and failure

Mitigation works when it's done right. The key factors are: a properly located suction point based on the slab and soil conditions, the right fan size for the home, thorough sealing of cracks and penetrations, and correct pipe routing with minimal bends. When any of these are compromised — often by low-bid installers using a one-size-fits-all approach — performance suffers. That's why a knowledgeable, certified installer matters.

What if it doesn't work the first time?

Occasionally a post-install test comes back higher than expected. This is rare with a well-designed system, but when it happens, a reputable mitigator doesn't walk away. We diagnose the suction, check for foundation leaks the system isn't capturing, and adjust — often adding a second suction point or upgrading the fan — until the post-install test confirms success. Our work isn't done until your number is down.

Long-term performance

A mitigation system isn't a set-it-and-forget-it install. The fan runs continuously and typically lasts 5 to 10 years before replacement. We recommend checking the manometer (the pressure gauge) twice a year and re-testing every two years to confirm ongoing performance. With basic maintenance, a quality system protects your home for decades.

The bottom line

Radon mitigation works — reliably, measurably, and durably. The data is clear, and our own post-install tests confirm it across hundreds of foothills homes. If your radon test is high, a properly installed system is the proven solution. The only question is whether your installer does it right, and that's where we come in.

Does Radon Mitigation Really Work? What the Data Shows — Frequently Asked Questions

How much does radon mitigation reduce radon levels?: A properly designed sub-slab depressurization system typically reduces radon by 90% or more, often bringing readings from well above the action level down below 2.0 pCi/L.
What if my radon is still high after mitigation?: A reputable mitigator will diagnose and adjust — adding a suction point, upgrading the fan, or sealing additional openings — until the post-install test confirms success. Our work isn't done until your number is down.
How long does a mitigation system keep working?: With basic maintenance — checking the manometer twice a year and re-testing every two years — a quality system protects your home for decades. The fan typically lasts 5 to 10 years before replacement.

Read the full article: Does Radon Mitigation Really Work? What the Data Shows

Radon in New Construction Colorado: Why Every New Foothills Home Needs Protection

Building a new foothills home? Installing radon protection during construction costs a fraction of a retrofit — and in Zone 1 Colorado, it's essential.

Why new construction is a radon opportunity

If you're building a new home in the Colorado foothills, you have a one-time opportunity to install radon protection for a fraction of what a retrofit costs. Once the slab is poured and the home is finished, installing a mitigation system means core-drilling concrete, routing pipe through finished space, and paying significantly more. During construction, the same protection can be built in for a few hundred to a thousand dollars.

What radon-resistant construction includes

A passive radon system starts beneath the slab: a layer of gas-permeable aggregate, a soil gas collector mat or pipe grid, and a vertical PVC pipe routed up through the house and vented above the roofline. We seal foundation cracks and openings, and the system works by natural stack effect — warm air rising carries soil gas up and out, no fan required. The whole assembly is invisible once the home is finished.

Active-ready design

We design every passive system to be 'active-ready' — meaning if a post-occupancy test comes back elevated, an electrician can drop a fan into the pipe run and activate the system in a few hours, with no concrete cutting and no interior disruption. This is the single highest-value radon feature you can build into a new foothills home. You get the protection of a passive system now and the option of full active mitigation later, cheaply.

Why every new foothills home needs this

The entire state of Colorado is EPA Radon Zone 1, and foothills homes on granite geology test among the highest in the state. Even a brand-new home on a new slab can have elevated radon — the geology doesn't care how recently you built. Installing radon-resistant construction protects your family from day one and is increasingly expected by lenders and buyers. It's one of the smartest, cheapest investments you can make in a new home.

Working with your builder

Foothills Radon Testing and Mitigation coordinates with your general contractor or foundation crew, provides the design and materials, and inspects the rough-in before the slab is poured. We serve new builds throughout Jefferson and Park Counties, from custom homes in Evergreen and Conifer to new subdivisions along the 285 corridor. If you're planning a build, talk to us early — ideally before the foundation work begins.

Radon in New Construction Colorado: Why Every New Foothills Home Needs Protection — Frequently Asked Questions

How much does radon-resistant construction cost during a build?: A passive system installed during construction typically costs $400 to $1,000 depending on the home — a fraction of a retrofit, which can run $1,500 to $3,500.
Does a passive system need a fan?: Not unless a post-occupancy test shows elevated radon. We make every passive system 'active-ready' so a fan can be added later with no concrete cutting or disruption.
Can a new home really have high radon?: Yes. The geology beneath your new home doesn't care how recently it was built. In Zone 1 Colorado, even brand-new homes can test high — radon-resistant construction protects you from day one.

Read the full article: Radon in New Construction Colorado: Why Every New Foothills Home Needs Protection

Complete Radon FAQ for Colorado Homeowners

Radon FAQ: Answers for Colorado Homeowners — Testing, Mitigation, Costs & Health

Everything Colorado foothills homeowners ask about radon — what it is, why the foothills test high, how testing and mitigation work, what it costs, the health risks, and how our free connection service works. Plain English, no fear-mongering.

What is radon, in plain English?

Radon is a naturally occurring radioactive gas. You can't see it, smell it, or taste it. It forms deep underground when uranium breaks down in soil and rock, and it seeps upward through the ground into the air. When radon enters a home through cracks and gaps in the foundation, it gets trapped and concentrates indoors. Long-term exposure to elevated radon is a serious health risk — it's the second leading cause of lung cancer in the United States, behind smoking. The good news is that radon is also one of the most fixable home problems there is: test, find your number, and mitigate if it's high.

Why does Colorado have such high radon levels?

Colorado's Front Range and foothills sit on the Pikes Peak Batholith — a massive granite formation that's naturally enriched in uranium. As that uranium decays, it releases radon into the surrounding soil. Add thin soil cover at high elevation, fractured bedrock, and the cold-mountain stack effect (warm indoor air pulling soil gas up through the foundation), and the result is some of the highest radon readings in the country. Colorado sits in the top 10 states for radon, the average home tests at 6.4 pCi/L — nearly five times the national average of 1.3 pCi/L — and the entire state is classified as EPA Radon Zone 1.

How do I know if my home has high radon?

The only way to know is to test. Radon is invisible and odorless, and homes right next door to each other can have wildly different readings — it depends on the geology beneath the foundation, the construction, and the soil permeability. A short-term test runs 2 to 7 days with a continuous monitor and gives you a quick snapshot; a long-term test runs 90+ days and gives the most accurate year-round picture. If you've never tested, start with a short-term test. If you're in a real estate transaction, you need a professional continuous-monitor test that produces a signed written report.

What radon level is considered dangerous?

The EPA action level is 4.0 pCi/L — above that, mitigation is strongly recommended. But there's no truly safe level of radon exposure, and many radon professionals recommend considering mitigation above 2.0 pCi/L, especially for long-term exposure. The World Health Organization recommends action above 2.7 pCi/L. In Colorado, where the average home tests at 6.4 pCi/L, a large share of homeowners will find themselves well above the action level. The key is to get your number, understand what it means, and make an informed decision — not to panic.

How does radon mitigation actually work?

The gold standard method is sub-slab depressurization (SSD). The professional cores a small hole through your concrete slab, inserts a suction point, and runs PVC piping to a quiet exterior fan. That fan creates a vacuum beneath the slab, drawing radon-laden soil gas out and venting it above the roofline — before it ever enters your living space. The system runs continuously and is barely noticeable: a pipe on the exterior and a fan about as loud as a refrigerator. A properly designed SSD system typically reduces radon by 90% or more, often bringing readings well below 2.0 pCi/L regardless of how high the original level was.

How much does radon mitigation cost in Colorado?

On the Front Range and in the foothills, a residential radon mitigation system typically costs between $1,500 and $3,500. The range reflects your foundation type (basement, crawl space, or slab), the fan capacity your soil conditions require, and the complexity of the pipe routing. Crawl space encapsulation, combination foundations, and challenging routing all add to the cost. You should always receive a firm written estimate before any work begins — no surprise charges. It's a one-time investment that protects your family for decades and runs on just a few dollars of electricity a month.

How long does a mitigation installation take?

Most residential radon mitigation installations are complete in a single day. The crew arrives in the morning, lays down floor protection, cores the slab, installs the suction point and piping, mounts the fan, and seals penetrations — most jobs are finished by late afternoon. Crawl space encapsulation or complex combination foundations can extend to a second day, but the majority of single-foundation foothills homes are one-day installs. After installation, we recommend waiting at least 24 hours for the system to stabilize, then running a 2 to 7 day short-term test to verify your levels dropped.

Does radon mitigation really work?

Yes — reliably and measurably. A properly designed sub-slab depressurization system typically reduces radon by 90% or more, and post-installation testing consistently confirms levels dropping well below 2.0 pCi/L, often below 1.0 pCi/L. This isn't marketing; it's what the data shows across hundreds of foothills installations. The difference between success and a mediocre result comes down to proper suction-point placement, correct fan sizing, thorough sealing of cracks, and clean pipe routing — which is why a knowledgeable, certified installer matters. If a post-install test comes back higher than expected, a reputable professional doesn't walk away; they diagnose and adjust until the number is down.

Does my foundation type affect my radon risk?

It does. Full basements put the most living space in direct contact with soil and tend to concentrate radon, but they're also ideal candidates for sub-slab depressurization. Dirt or stone crawl spaces — common in older foothills ranch homes — are essentially an open window into the earth and need encapsulation plus sub-membrane depressurization. Slab-on-grade homes have less soil contact but can still have high radon, especially on uranium-bearing geology. Combination foundations (basement plus crawl space) require the most thoughtful design. Every foundation type can have radon, and every foundation type can be mitigated — the approach just changes.

What about radon and Colorado real estate?

Colorado law requires sellers to disclose known radon test results and the presence of any radon mitigation system. Testing isn't mandatory, but most foothills buyers request a 48-hour continuous-monitor test during the inspection period. If the result is above 4.0 pCi/L, the buyer can request mitigation as a contingency — and a fast, professional installation with a transferable warranty usually satisfies the contingency and keeps the closing on track. A documented, warranted mitigation system turns a radon problem into a selling point: it shows a known foothills issue has been professionally addressed.

What's the deal with the Foothills Radon connection service?

Foothills Radon Testing and Mitigation is a connection and referral service — not a contractor. We help Colorado foothills homeowners connect with carefully vetted, independent radon professionals for testing, mitigation, and related work. We don't perform the work ourselves; we evaluate the providers we choose to work with, consider your location and service needs, and connect you with the right professional. And it costs you nothing: the professionals we work with compensate us for the connection, so your rates stay competitive with the local market and you get our vetting and matching at no extra cost.

How do I choose a radon professional?

Look for NRPP (National Radon Proficiency Program) certification — it's the gold standard for radon measurement and mitigation in the United States. Ask about insurance, experience with your foundation type, written warranties, and whether they provide post-installation testing. Check reviews and complaint records. A reputable company gives you a firm written estimate, explains the system in plain English, and never pressures you. If you'd rather skip the research, that's exactly what our connection service does for you — we evaluate the factors that matter and connect you with a professional we've vetted.

Frequently Asked Questions

Is radon really that dangerous in Colorado?: Yes. Radon is the second leading cause of lung cancer in the U.S. behind smoking, and Colorado's average home tests at 6.4 pCi/L — nearly 5× the national average. 50% of Colorado homes exceed the EPA action level of 4.0 pCi/L. It's a serious, long-term health risk — but it's also one of the most fixable home problems there is.
Can I test for radon myself?: Yes — DIY charcoal kits ($15–$30) are fine for screening your own home. But DIY results aren't accepted for real estate transactions, which require a certified tester and a continuous monitor that produces a signed, timestamped report. If your DIY result comes back high, call a professional for confirmation and an estimate.
Will a radon fan run up my electric bill?: No. A radon mitigation fan runs continuously but draws very little power — roughly equivalent to a lightbulb, often under $50 per year. Modern fans are sized to your home's soil conditions and are engineered for quiet, efficient, long-term operation.
Do I need to re-test after mitigation?: Yes. Wait at least 24 hours after installation for the system to stabilize, then run a 2 to 7 day short-term test to confirm your levels dropped. After that, re-test every 2 years and check the manometer (the pressure gauge on your pipe) twice a year to confirm the fan is still pulling vacuum.
Does a radon mitigation system hurt resale value?: No — it helps. A documented, warranted mitigation system is a selling point in a Zone 1 state where radon disclosure is required. It tells buyers a known issue has been professionally addressed, and a transferable warranty gives them confidence. It can actually smooth, not stall, a closing.
How much does it cost to use Foothills Radon?: Nothing. Our connection service is free for homeowners. The professionals we work with compensate us for the connection — not you — so your rates stay competitive with the local market and you get our vetting and matching at no extra cost.

Read the complete radon FAQ

Comprehensive Industry FAQ — Radon in Colorado

Detailed answers to the most common questions Colorado foothills homeowners ask about radon, organized by topic.

Radon Basics: What It Is and Why It Matters

Radon is a naturally occurring radioactive gas you can't see, smell, or taste — and in Colorado, it's one of the most significant indoor air risks a homeowner can face. These are the fundamentals every foothills homeowner should understand before they test or mitigate.

What is radon, in plain terms?: Radon is a colorless, odorless, radioactive gas that comes from the natural breakdown of uranium in soil and rock. Uranium exists in trace amounts across the earth, but Colorado's granite bedrock contains elevated levels — and as that uranium decays, it releases radon that migrates up through soil and into homes through foundation cracks, sump pits, and construction joints. The EPA classifies radon as a known human carcinogen. It's the second leading cause of lung cancer in the United States behind smoking, and the leading cause among nonsmokers.
Why is radon such a big deal in Colorado specifically?: Three reasons converge in Colorado. First, the state sits on uranium-bearing granite — the Pikes Peak Batholith alone covers a massive swath of the Front Range. Second, the average Colorado home tests at 6.4 pCi/L, nearly five times the national average of 1.3 pCi/L, and 50% of homes exceed the EPA action level of 4.0 pCi/L. Third, the entire state is classified EPA Radon Zone 1, the highest risk category. If you live in the Jefferson County or Park County foothills, the geology beneath your home is working against you — testing is the only way to know your number.
Can I see, smell, or taste radon?: No. Radon is completely invisible, odorless, and tasteless. There's no physical sign that your home has elevated radon — no smell, no stain, no warning. That's why testing is the only way to detect it. A properly placed test gives you a real pCi/L number you can act on, rather than guessing based on your neighbor's result or how your home feels.
Is radon really dangerous enough to worry about?: Yes. Radon is responsible for about 21,000 lung cancer deaths per year in the United States, according to the EPA — more than drunk driving or carbon monoxide. The risk comes from long-term exposure, not a single day, and it's cumulative over years. The good news: the risk is also one of the most fixable indoor air problems in a home. A properly installed mitigation system reduces exposure dramatically, and the fix is permanent.
What does pCi/L actually measure?: pCi/L stands for picocuries per liter — it's the standard unit for measuring radon concentration in air. One picocurie is a unit of radioactivity, and pCi/L tells you how many decays happen per liter of air. The higher the number, the more radon you're breathing. The EPA action level is 4.0 pCi/L, and many professionals recommend considering mitigation above 2.0 pCi/L because there's no truly safe level of exposure.

Radon Testing: How, When, and Why

Testing is the only way to know your radon level. Here's how the different test types compare, when each makes sense, and what you should expect from a professional test — especially in the Colorado foothills.

How long does a radon test take?: Short-term tests run between 2 and 7 days using a continuous monitor that records hourly readings. Long-term tests run 90 days or more using an alpha-track device, giving the most accurate picture of your year-round exposure. For real estate transactions on a deadline, a 48-hour short-term continuous monitor test is the standard and gives you a defensible number before closing. For a home you're staying in, a long-term test is usually the better choice.
Should I use a DIY radon test kit or hire a professional?: DIY kits ($15–$30) are a reasonable first screening tool for homeowners who aren't in a transaction — but they're not accepted for real estate closings, and placement errors can skew results. A professional test uses an EPA-approved continuous monitor, is placed by a certified tester, and produces a signed written report. If your DIY result comes back high, confirm it with a professional test before committing to mitigation. For any transaction or any time you want certainty, go professional.
Do I need to leave my house during a radon test?: No, but you do need to maintain closed-house conditions for 12 hours before and during a short-term test. That means windows closed, exterior doors closed except for normal entry and exit, and no whole-house fans or systems that exchange air with the outside. Normal living is fine. Your tester will give you clear instructions — the test only fails if conditions aren't maintained, which is why a professional placement prevents most common errors.
What's the difference between short-term and long-term testing?: Short-term tests (2–7 days) capture a snapshot influenced by weather, season, and ventilation — they're ideal for fast, transaction-driven decisions. Long-term tests (90+ days) average out those fluctuations and give your true year-round exposure. If your short-term result is very high (well above 4.0 pCi/L), there's little reason to wait for a long-term test. If it's borderline, a long-term test confirms whether mitigation is warranted before you spend the money.
How often should I test my home for radon?: Every two years is the standard recommendation — and immediately after any major renovation, foundation change, or seismic event. Radon levels also shift as soil settles and as fans age, so even a home that tested low years ago should be retested. If you've installed a mitigation system, retest every two years to confirm it's still keeping your levels down, and check the manometer twice a year.
Can radon levels vary between neighboring homes?: Absolutely — and they often do, dramatically. Radon is highly localized. Two homes on the same street, even adjacent lots, can have wildly different readings because of differences in soil fractures, foundation construction, and the specific geology beneath each home. Your neighbor's low result tells you nothing about yours. The only way to know is to test your own home.

Radon Mitigation: How It Works and What to Expect

If your test comes back elevated, mitigation is the proven fix. Sub-slab depressurization is the gold standard, it works, and most installs finish in a single day. Here's what's involved.

How does a radon mitigation system work?: The most common method is sub-slab depressurization (SSD). We core a small hole through your concrete slab, insert a suction point, and run PVC piping to a quiet exterior fan that vents radon-laden soil gas above the roofline — before it ever enters your living space. The fan runs continuously, creating a vacuum beneath the slab. It's quiet, low-maintenance, and remarkably effective. Crawl space homes may also need a vapor barrier plus sub-membrane depressurization, which uses the same principle beneath a sealed membrane.
Does radon mitigation actually work?: Yes — it's one of the most reliable home remediation measures available. A properly designed SSD system typically reduces radon levels by 90% or more, often bringing readings from well above the action level down below 2.0 pCi/L. Post-installation testing confirms the result. Across hundreds of foothills homes, the data consistently shows dramatic reductions. When mitigation doesn't reach target levels the first time, a reputable professional diagnoses and adjusts — adding suction points or upgrading the fan — until the post-install test confirms success.
How long does a radon mitigation installation take?: Most single-foundation residential installations are complete in one day. We arrive in the morning, lay down floor protection, core the slab, install the suction point and piping, mount the fan, and seal penetrations — typically wrapping up by late afternoon. Crawl space encapsulation or complex combination foundations (basement plus crawl) may extend to a second day. For real estate transactions, the full sequence of testing, mitigation, and post-install verification can often be compressed into the inspection window.
How much does radon mitigation cost in Colorado?: On the Front Range and in the foothills, a typical residential mitigation system runs $1,500 to $3,500. The range reflects your foundation type (basement, crawl space, slab, or combination), the fan capacity required, pipe routing complexity, and whether crawl space encapsulation is needed. A reputable professional provides a firm written estimate before any work begins — no surprise charges, no vague ranges on the invoice.
Will the mitigation fan run all the time and make noise?: The fan runs continuously to maintain the vacuum beneath your slab — that's what keeps radon out. It's designed to be quiet, roughly the sound level of a refrigerator, and uses about the same electricity as a standard lightbulb (around $20–$50 per year). Most homeowners stop noticing it within a week. If your fan becomes loud or vibrates, that's a sign of a bearing failure and it's time for a replacement.
How do I know if my mitigation system is still working?: Every system includes a manometer — a U-tube pressure gauge mounted on the pipe. If the fluid levels on either side are uneven, the system is pulling vacuum and working. Check it twice a year. If the levels are even or the fan is silent, call for service. We also recommend retesting your radon level every two years to confirm the system is still keeping your numbers down as soil conditions and fan age change over time.

Colorado Foothills Geology & Local Risk

The Colorado foothills aren't a random radon hotspot — the risk comes from the geology beneath your home. Understanding the local geology helps explain why Pine, Conifer, Evergreen, and Bailey consistently test high.

Why do foothills homes test higher for radon than Denver homes?: The foothills sit directly on the Pikes Peak Batholith — a billion-year-old granite formation naturally enriched in uranium. As that uranium decays underground, it releases radon that travels through fractured rock and thin mountain soil directly into home foundations. Denver homes sit on deeper alluvial deposits with more soil to filter and slow the gas. Foothills homes at 7,000–8,000+ feet sit close to fractured bedrock with minimal soil cover, and the cold mountain climate amplifies the stack effect that pulls radon inside.
What is the Pikes Peak Batholith and why does it matter for radon?: The Pikes Peak Batholith is a massive body of granite that formed over a billion years ago and underlies much of the Colorado Front Range and foothills. This granite contains elevated uranium compared to average rock — uranium that decays into radium, which decays into radon gas. The same geology that creates the foothills' dramatic outcrops and rugged beauty is the engine behind its radon problem. The rock isn't going anywhere on a human timescale, so the risk is permanent — but it's also completely manageable with mitigation.
Does elevation affect my radon level?: Elevation itself doesn't create radon, but it amplifies the conditions that let it enter homes. At 7,000+ feet, foothills homes sit close to fractured bedrock with thin soil cover — less filtering between the radon source and your foundation. The cold mountain climate also strengthens the stack effect, where warm indoor air rises and creates negative pressure at the slab, actively drawing soil gas (including radon) inside. Combined with basement foundations common in the foothills, the result is high radon potential.
Why do Jefferson County and Park County homes test so high?: Jefferson County and Park County foothills homes sit on the granite and uranium-bearing rock of the Pikes Peak Batholith at elevations above 7,000 feet. The combination of uranium-rich bedrock, fractured rock that channels radon gas, thin soil, and basement-heavy construction puts these communities on the upper end of the state range — and Colorado is already in the top 10 states nationwide. Towns like Conifer (8,277 ft), Aspen Park (8,400 ft), and Grant (8,450 ft) consistently show some of the highest readings.

Radon & Colorado Real Estate Transactions

Colorado law requires radon disclosure in real estate transactions, and radon is one of the most common inspection contingencies in foothills home sales. Here's what buyers, sellers, and realtors need to know.

Does Colorado require radon testing or disclosure when selling a home?: Testing isn't legally required, but disclosure is. Colorado law requires sellers to disclose any known radon test results and the presence of any radon mitigation system on the property as part of the standard seller's property disclosure form. The key word is 'known' — if you've tested or installed a system, you must disclose it. Most foothills buyers request a radon test during the inspection period anyway, so the practical reality is that radon gets addressed in nearly every foothills transaction.
What happens if a home's radon test comes back high during a sale?: A high reading doesn't kill the deal. The buyer can request mitigation as a condition of the sale, and the seller typically has a window — often 5 to 10 days — to have a system installed and a post-install test run before closing. A fast, professional mitigation with a transferable warranty usually satisfies the contingency and keeps the closing on schedule. Many foothills agents treat radon as a standard, expected part of the inspection process rather than a dealbreaker.
Should I test before listing my home?: Pre-listing testing is smart. If your result is low, you can disclose that with confidence — a selling point. If it's high, you can address it proactively rather than under a closing deadline, when you have less leverage and more stress. A documented, warranted mitigation system turns a potential objection into a selling feature: it tells buyers the home's radon has been professionally handled.
Are mitigation system warranties transferable to the buyer?: Yes — and that's a major selling point. Mitigation systems installed by the professionals we connect homeowners with come with a transferable warranty, often up to 20 years. When you sell, the warranty transfers to the new owner at no charge, along with the post-install test results and system documentation. That transferable coverage gives buyers confidence and satisfies most disclosure requirements cleanly.

Health, Safety & Risk Questions

Radon is a health issue, and understanding the actual risk — without fear-mongering — helps you make confident decisions. Here's what the science says and how mitigation reduces your exposure.

How dangerous is radon, really?: Radon is the second leading cause of lung cancer in the United States, behind only smoking — responsible for roughly 21,000 deaths annually, according to the EPA. The risk comes from long-term exposure, measured in years, not days. The longer and higher your exposure, the greater the risk. Smokers face a dramatically elevated risk when combined with radon exposure. The encouraging part: mitigation reliably and dramatically reduces that exposure, often by 90% or more.
Is there a safe level of radon?: Technically, no. The EPA action level is 4.0 pCi/L — the point at which mitigation is strongly recommended — but there's no threshold below which risk drops to zero. Many professionals recommend considering mitigation above 2.0 pCi/L, and the World Health Organization suggests action above 2.7 pCi/L. Lower is always better, and a properly designed system can bring most homes well below 2.0 pCi/L.
Does radon cause symptoms I might notice?: No — radon doesn't cause any immediate symptoms. You won't feel it, smell it, or get sick in the short term. The health effects (lung cancer) develop over years of exposure. This is precisely why testing matters: there's no early warning sign, no headache or cough to tip you off. By the time radon-related illness appears, exposure has typically been happening for a long time. Testing catches the risk before the exposure accumulates.
If my radon is high, how urgent is fixing it?: Radon is a long-term risk, not an acute emergency. You don't need to evacuate or panic. But you shouldn't ignore it either — the longer you breathe elevated levels, the more risk accumulates. If your result is very high (well above 4.0 pCi/L), schedule mitigation soon. If it's borderline, consider a long-term confirmation test. Either way, the fix is proven, fast, and permanent. Most installations complete in one day.
Is radon dangerous for children and pets?: Radon exposure carries risk for anyone living in the home, including children and pets. Because radon risk accumulates over time, longer residency means more lifetime exposure — a concern for kids who will grow up in the home. There's no evidence that children are uniquely sensitive at lower levels than adults, but everyone benefits from a home with low radon. Mitigation protects the entire household.

Radon & Your Home's Foundation

Your foundation type — basement, crawl space, or slab — shapes both your radon risk and the mitigation approach. Here's how each foundation handles radon and what it means for your home.

Which foundation type has the highest radon risk?: Basements put the most living space in direct contact with soil and tend to concentrate radon (the gas is heavier than air and settles low), but dirt or stone crawl spaces are also highly vulnerable because they're essentially an open window into the earth beneath your home. Slab-on-grade foundations have less soil contact but aren't risk-free, especially on uranium-bearing geology. Every foundation type can have radon, and every type can be mitigated — the approach just differs.
How is a crawl space mitigated for radon?: Dirt or stone crawl spaces are sealed with a heavy 20-mil vapor barrier, sealed at every seam and fastened to the walls. Then a sub-membrane depressurization fan pulls soil gas from beneath the barrier and vents it outside. Concrete crawl spaces can sometimes be treated like a slab with sub-slab depressurization. The combination of encapsulation plus active suction is the gold standard for crawl space radon — and it also controls moisture and musty odors.
My home has both a basement and a crawl space — how does that work?: Combination foundations — common on sloped foothills lots — need a tailored approach. Typically the basement gets a sub-slab suction point and the crawl space gets a sealed membrane with its own depressurization, sometimes on the same fan system. We assess each zone of the foundation and design a system that addresses all of them. Combination foundations aren't harder to mitigate, just more complex to design — which is exactly when experience matters.
Can a slab-on-grade home have a radon problem?: Yes. Slabs have less soil contact than basements, but radon still enters through slab cracks, expansion joints, and around plumbing penetrations. On Colorado's uranium-bearing geology, slab homes absolutely should be tested. Sub-slab depressurization works on slabs too, though the suction point layout may differ from a basement install. Lower contact doesn't mean no risk — it means a different mitigation design.

Radon & New Construction in Colorado

Building a new foothills home? Installing radon protection during construction costs a fraction of a retrofit — and in Zone 1 Colorado, it's one of the smartest investments you can make.

Should I install radon protection when building a new home in Colorado?: Absolutely. In a Zone 1 state where the average home tests at 6.4 pCi/L, radon-resistant construction is one of the highest-value features you can build into a new home. A passive system installed during construction typically costs $400–$1,000 — a fraction of the $1,500–$3,500 a retrofit costs later, which requires core-drilling finished concrete and routing pipe through completed living space. Protecting your family from day one is the smart move.
What does radon-resistant construction include?: A passive system starts beneath the slab: a gas-permeable aggregate layer, a soil gas collector mat or pipe grid, and a vertical PVC pipe vented above the roofline. Foundation cracks and openings are sealed. The system works by natural stack effect — warm air rising carries soil gas up and out, no fan required. We make every passive system 'active-ready,' meaning a fan can be dropped in later if a post-occupancy test shows elevated radon — with no concrete cutting or interior disruption.
Can a brand new home really have high radon?: Yes. The geology beneath your new home doesn't care how recently it was built. Even a brand-new home on a fresh slab can test high in a Zone 1 area like Colorado, especially on granite bedrock. Radon-resistant construction protects you from day one, but you should still test after moving in to confirm the passive system is performing.

Cost, Payment & Our Connection Service

Radon mitigation is a one-time investment that protects your family for decades. Here's how pricing works, what's included, and how our free connection service keeps your costs competitive.

How much does radon mitigation cost on the Front Range?: A typical residential mitigation system on the Front Range and in the foothills runs $1,500 to $3,500. The range reflects foundation type, fan capacity, pipe routing complexity, and whether crawl space encapsulation is needed. You should receive a firm written estimate before any work begins — no surprise charges. It's a one-time investment that runs quietly for decades on a few dollars of electricity per month.
Does homeowners insurance cover radon mitigation?: Generally no — radon mitigation is considered a home improvement, not a covered repair under standard homeowners policies. However, it adds real value and safety to your home, and a transferable warranty can be a selling point when you list. Some home warranty or retrofit programs may offer partial coverage; check your specific policy.
Is the Foothills Radon connection service really free for homeowners?: Yes. Our service costs you nothing. We're a referral and connection service — the professionals we work with compensate us for the connection, not you. Your rates stay competitive with the local market because you're not paying our overhead on top. You get the benefit of our careful vetting and matching at no extra cost. It's a win-win: the professionals get connected with serious, local homeowners, and you get matched with a carefully vetted expert without the guesswork.
Why use a connection service instead of calling a contractor directly?: Because finding the right radon professional on your own is harder than it sounds. You may not know what credentials matter, which services you actually need, or how to compare providers. We've already done that work. We evaluate the professionals we work with — considering experience, NRPP certification, insurance, reputation, and local capability — and we match you with the right one for your specific location and service need. It costs you nothing, saves you hours of research, and removes the guesswork from a health-related decision.

Choosing a Radon Professional

Not all radon companies are the same. Knowing what to look for — and what to ask — helps you avoid low-bid installers and get a system that actually works for the long haul.

What credentials should I look for in a radon professional?: The gold standard is NRPP (National Radon Proficiency Program) certification, which requires rigorous training, demonstrated competency, and ongoing continuing education. Verify that certifications are active and in good standing. Also confirm liability insurance for the services being performed, and ask about warranty terms — a reputable professional backs their work in writing. Local experience in the foothills matters too: someone who knows your foundation type and geology will design a better system than a generic installer.
What questions should I ask before hiring a radon mitigator?: Ask: Are you NRPP-certified, and can I verify it? Do you carry liability insurance? What warranty comes with the system, and is it transferable? Can you provide local references from similar homes? How do you size the fan and design the suction layout for my foundation? Will you handle the post-install test? A reputable professional answers these clearly and in writing. A vague or evasive answer is a red flag.
How do I verify a radon contractor's insurance?: Ask for a certificate of insurance (COI) before work begins. A reputable professional provides this readily and can have it sent directly to your realtor, title company, or general contractor if you're in a transaction. The COI confirms liability coverage is active and shows the policy limits. If a contractor can't or won't provide a COI, walk away — it's a basic professional standard.
Should I get multiple radon mitigation quotes?: It's reasonable to compare a few quotes — but the cheapest quote is rarely the best value. Radon mitigation is a health system installed in your home for decades. A low-bid installer using a one-size-fits-all approach often underperforms, requiring costly adjustments later. Look for a firm written estimate, clear explanation of the system design, NRPP certification, a real warranty, and local experience. The right professional costs about the same but delivers a system that actually works.

Our Radon Services — Detailed Guide

We help connect Colorado foothills homeowners, buyers, sellers, realtors, builders, and businesses with carefully vetted, NRPP-certified radon professionals for every phase of radon — from your first test to long-term system maintenance.

Radon Testing

Short-term and long-term radon testing for foothills homes — accurate, EPA-compliant, and the honest first step before any system gets installed.

You can't see, smell, or taste radon — and in the Colorado foothills, the only way to know your level is to test. We help connect homeowners with carefully vetted professionals who offer both short-term and long-term testing using EPA-approved continuous monitors and passive devices, so you get a real number, not a guess. Testing is available for homeowners, buyers, sellers, and real estate transactions across the HWY 285 corridor.

Why testing matters in the foothills

Colorado sits in EPA Radon Zone 1 — the highest risk category — and the average Colorado home tests at 6.4 pCi/L, nearly five times the national average of 1.3 pCi/L. Roughly half of all Colorado homes come in above the EPA action level of 4.0 pCi/L. Jefferson County and Park County foothills homes, built on granite and uranium-bearing rock, tend to test on the upper end of the state range. If you live in Evergreen, Conifer, Pine, Bailey, or anywhere along the Front Range, testing isn't optional due diligence — it's essential.

Short-term vs. long-term testing

Short-term tests run 2 to 7 days using a continuous radon monitor that records hourly readings, ideal for real estate transactions on a tight timeline. Long-term tests run 90+ days with an alpha-track device and give the most accurate picture of your year-round exposure, since radon fluctuates with seasons, weather, and ventilation. For a home you're staying in, we usually recommend a long-term test. For a closing deadline, short-term gets you a defensible number fast.

What your results mean

The EPA action level is 4.0 pCi/L — above that, mitigation is strongly recommended. Many professionals, including us, suggest mitigation above 2.0 pCi/L because there is no truly safe level of radon exposure, and radon is the second leading cause of lung cancer in the United States behind smoking. We hand you a clear written report with your number, what it means, and a plain-English recommendation — no pressure, no upsell.

What's included

Every test arranged through our service includes placement of an EPA-approved device, closed-house conditions guidance, retrieval, lab analysis, and a written report with your pCi/L reading and a recommendation. Real estate tests include a signed report suitable for transaction disclosures. The independent professional handles the entire process — we help make sure you're connected with the right one.

Radon Testing — Frequently Asked Questions

How long does a radon test take?: A short-term test runs 2 to 7 days. A long-term test runs at least 90 days. For real estate closings, we typically use a 48-hour short-term continuous monitor so you have a defensible number before the deadline.
Do I need to leave my house during the test?: No, but you do need to keep windows and exterior doors closed (except normal entry/exit) for 12 hours before and during a short-term test. We'll give you simple closed-house conditions instructions when we drop off the device.
What level of radon is dangerous?: The EPA action level is 4.0 pCi/L. There's no truly safe level — radon is the #2 cause of lung cancer in the U.S. Many professionals recommend mitigation above 2.0 pCi/L. We'll explain your number honestly and let you decide.

Learn more about Radon Testing

Radon Mitigation System Installation

Sub-slab depressurization systems designed and installed for foothills homes — most jobs finish in one day and drop radon below 2.0 pCi/L.

Radon mitigation is the most common service homeowners need. We help connect you with carefully vetted professionals who install sub-slab depressurization (SSD) systems — the gold standard method recognized by the EPA and the Colorado Department of Public Health — tailored to the foundation types and geology of foothills homes. Most installations are complete in a single day, and follow-up testing routinely shows levels dropping well below 2.0 pCi/L.

How sub-slab depressurization works

An SSD system creates a vacuum beneath your home's concrete slab, drawing radon-laden soil gas out before it enters your living space. We core a small hole through the slab, insert a suction point, and run PVC piping to a quiet exterior fan that vents the gas above the roofline. The system runs continuously and is barely noticeable — a small pipe on the exterior and a fan that's quieter than a refrigerator.

Designed for foothills foundations

Homes along the HWY 285 corridor come in every foundation flavor — full basements, walk-outs, crawl spaces, and slab-on-grade. Each requires a different approach. Basements get a sub-slab suction point; crawl spaces may need a membrane and sub-membrane depressurization; slab homes need a different suction layout. We assess your foundation, your radon level, and your home's construction before we ever touch a drill.

What to expect on install day

We arrive in the morning, lay down floor protection, core the slab, install the suction point and piping, mount the fan, and seal the penetration. Most jobs are done by late afternoon. We leave the workspace cleaner than we found it, label the system clearly, and walk you through how to read the manometer (the pressure gauge on your pipe) so you always know your system is working.

Cost and warranty

Radon mitigation systems on the Front Range typically cost between $1,500 and $3,500, depending on foundation complexity, fan requirements, and routing. Every system installed by our partner contractors includes a written warranty and a post-installation test recommendation so you can confirm your levels dropped. The independent professional provides a firm estimate before any work starts — no surprise charges.

Radon Mitigation System Installation — Frequently Asked Questions

How much does a radon mitigation system cost in Colorado?: Most systems on the Front Range run $1,500 to $3,500 depending on your foundation, fan needs, and pipe routing. We give you a firm written estimate before any work begins — no surprise charges.
Will the fan run all the time?: Yes, the fan runs continuously to keep soil gas from entering your home. It's very quiet — about the sound of a refrigerator — and uses roughly the same electricity as a lightbulb.
How do I know the system is working?: Every system has a manometer (a U-tube pressure gauge) mounted on the pipe. If the fluid levels are uneven, the system is pulling vacuum. We also strongly recommend a post-installation radon test 24+ hours after the system runs.

Learn more about Radon Mitigation System Installation

Crawl Space Encapsulation

Vapor barrier encapsulation and sub-membrane depressurization for dirt and stone crawl spaces common in older foothills homes.

Many older foothills homes — especially ranches and cabins in Pine, Bailey, Idledale, and Indian Hills — were built with dirt or stone crawl spaces. These open earth spaces are a direct path for radon and moisture to enter your home. We help connect homeowners with professionals who seal that ground with a heavy vapor barrier, and when paired with sub-membrane depressurization, it's one of the most effective radon reductions available.

Why dirt crawl spaces are a radon problem

Radon rises from the soil through the path of least resistance. A bare dirt crawl space is essentially an open window into the earth beneath your home. In the foothills, where granite and uranium-bearing rock sit close to the surface, unsealed crawl spaces can drive radon levels far above the EPA action level. Encapsulation closes that window.

What encapsulation involves

We line the crawl space floor and walls with a reinforced 20-mil vapor barrier, sealed at every seam and fastened to the foundation walls. For radon specifically, we add a sub-membrane depressurization system — a suction pipe beneath the membrane connected to a fan that pulls soil gas and vents it outside. The result is a dry, sealed, radon-resistant crawl space.

Bonus benefits beyond radon

Encapsulation does more than cut radon. It controls moisture that causes musty odors, mold, and wood rot; improves indoor air quality throughout the home; and can even make floors above the crawl space warmer in winter. Many foothills homeowners notice their house smells and feels noticeably better within days.

Is your crawl space a candidate?

If your home has a dirt, gravel, or partial-stone crawl space — common in pre-1990s construction across Jefferson and Park Counties — encapsulation is almost always worthwhile, especially if your radon test is elevated. We inspect the space, measure, and give you a clear scope and price before any work starts.

Crawl Space Encapsulation — Frequently Asked Questions

Does encapsulation alone fix radon?: Encapsulation reduces radon, but for elevated levels we recommend pairing it with sub-membrane depressurization — a fan that actively pulls soil gas from beneath the barrier. The combination is what brings levels reliably below the EPA action level.
How long does crawl space encapsulation take?: Most encapsulation jobs take 1 to 2 days depending on the size and condition of the crawl space. Adding a sub-membrane depressurization fan adds minimal time to the project.
Will it help with the musty smell in my house?: Very likely. A sealed, conditioned crawl space eliminates the moisture source behind most musty odors and improves air quality throughout the home above it.

Learn more about Crawl Space Encapsulation

Radon Fan Replacement & Repair

Replacement fans, vibration fixes, and system repairs for existing radon systems across the foothills — often same-week.

If your radon system is humming loudly, rattling, or the manometer reads flat, your fan may be failing. Radon fans typically last 5 to 10 years, and when one quits your home is unprotected. We help connect homeowners with professionals who replace and repair fans for any system — ours or someone else's — across Jefferson and Park Counties, often within the same week you call.

Signs your radon fan needs service

Common warning signs include a loud or vibrating fan, a manometer reading zero (no pressure differential), an uptick in your radon test results, or a fan that's simply silent and not running. If you notice any of these, your system isn't protecting you and it's time to call. We'll diagnose whether it's a fan failure, a pipe issue, or a suction-point problem.

Upgrading to a quieter, more efficient fan

Older radon fans are often louder and less efficient than today's models. When we replace a fan, we size the new unit to your home's soil conditions and slab, which often means a quieter fan that draws less power while maintaining strong suction. Many customers are surprised how much quieter their system gets after an upgrade.

Repairs beyond the fan

Sometimes the issue isn't the fan at all — it's a cracked pipe, a clogged suction point, or poor initial installation. We inspect the full system, find the real cause, and fix it honestly. If your system was installed by another company and isn't performing, we're happy to take a look and give you a straight answer.

We service any system

You don't need to have bought your system through us. The professionals we connect you with service and replace fans on radon systems installed by any contractor throughout the foothills. Bring us your manometer reading and your last test result and we'll help connect you with someone who can tell you where you stand.

Radon Fan Replacement & Repair — Frequently Asked Questions

How long do radon fans last?: Most radon fans last 5 to 10 years. If yours is older, louder than it used to be, or your manometer reads flat, it's time to have it checked.
Can you fix a system another company installed?: Absolutely. We service and replace fans on radon systems installed by any contractor across Jefferson and Park Counties. Bring us your manometer reading and last test result.
How fast can you come out?: For a non-functioning system we aim to schedule within the same week, often sooner. A dead fan means your home is unprotected, so we treat it as a priority.

Learn more about Radon Fan Replacement & Repair

Post-Mitigation Radon Testing

Independent follow-up testing to confirm your mitigation system brought radon below action level — required for real estate and recommended for every install.

A radon system is only as good as the number it produces. Post-mitigation testing confirms your new system actually brought your radon level down — and it's the proof you need for real estate transactions, warranty validation, and your own peace of mind. We help connect you with professionals who provide independent follow-up testing after every installation.

When to test after installation

We recommend waiting at least 24 hours after the system is running so conditions stabilize, then running a short-term test of 2 to 7 days. For real estate closings, this post-install test is often a contingency requirement, and we provide a signed written report suitable for the transaction file.

Independent verification

For maximum credibility — especially in a sale — we can arrange a post-mitigation test independent of the installation, so the homeowner, buyer, and agent all have confidence in the number. We place the device, manage closed-house conditions, and deliver a clear report.

What if the level didn't drop enough?

It's rare with a properly designed SSD system, but if a follow-up test is still elevated, the professional doesn't walk away. They diagnose the suction, check for foundation leaks, and adjust the system — often adding a second suction point — until your level is below the action level. The work isn't done until your number is down.

Ongoing verification

Radon levels can change over time as soil shifts and fans age. The professionals we connect you with recommend re-testing every two years, and a simple reminder program keeps it from slipping. A quick manometer check twice a year and a short-term test every couple of years keeps your home protected for the long haul.

Post-Mitigation Radon Testing — Frequently Asked Questions

How soon after installation should I test?: Wait at least 24 hours for the system to stabilize, then run a 2 to 7 day short-term test. We'll coordinate timing around your closing date if needed.
Is post-mitigation testing required for a home sale?: It's often a contingency in the purchase contract. We provide a signed written report with your post-install reading that satisfies most transaction requirements.
What if my level is still high after the system runs?: We diagnose and adjust — sometimes adding a second suction point — until your level is below the action level. Our work isn't done until your number is down.

Learn more about Post-Mitigation Radon Testing

New Construction Radon Prevention

Passive radon systems and active-ready rough-ins for new foothills homes — far cheaper to install during construction than to retrofit later.

If you're building a new home in the foothills, installing radon-resistant construction features during the build is dramatically cheaper than retrofitting a system later — and in a Zone 1 state like Colorado, it's one of the smartest investments you can make. We help connect builders and homeowners with professionals who install passive and active-ready radon systems from the ground up.

What radon-resistant construction includes

A passive radon system starts beneath the slab: a layer of gas-permeable aggregate, a soil gas collector mat or pipe grid, and a vertical PVC pipe routed up through the house and vented above the roofline. We seal foundation cracks and openings, and the whole assembly works by natural stack effect — no fan required unless a later test shows it's needed.

Active-ready rough-in

Why every new foothills home needs this

The entire state of Colorado is EPA Radon Zone 1, and foothills homes on granite geology test among the highest in the state. Building a passive system costs a fraction of a retrofit, and it protects your family from day one. Many lenders and buyers now expect radon-resistant features in new construction.

Working with your builder

The professional coordinates with your general contractor or foundation crew, provides the design and materials, and inspects the rough-in before the slab is poured. We help connect you with professionals serving new builds throughout Jefferson and Park Counties, from custom homes in Evergreen and Conifer to new subdivisions along the 285 corridor.

New Construction Radon Prevention — Frequently Asked Questions

How much does a passive radon system cost during construction?: A passive system installed during the build typically costs a fraction of a retrofit — often $400 to $1,000 depending on the home. It's one of the highest-value features you can add to a new foothills home.
Does a passive system need a fan?: Not always. A passive system uses natural stack effect to vent soil gas. We make it 'active-ready' so a fan can be added later if a test shows elevated radon — with no concrete cutting required.
Can you work with my general contractor?: Yes. We coordinate with your builder or foundation crew, provide the design and materials, and inspect the rough-in before the slab is poured.

Learn more about New Construction Radon Prevention

Real Estate Radon Services

Fast radon testing, mitigation, and post-install verification for buyers, sellers, and realtors — with written reports and transferable warranties.

Colorado law requires radon disclosure in real estate transactions, and radon is one of the most common inspection contingencies in foothills home sales. We help connect buyers, sellers, and realtors with carefully vetted professionals who specialize in keeping closings on track with fast testing, rapid mitigation, written reports, and transferable warranties that give buyers confidence and sellers a clean disclosure.

Colorado's radon disclosure law

Colorado requires sellers to disclose known radon levels and any radon mitigation system in the property. For buyers, a radon test is a standard inspection contingency. A high reading doesn't kill a deal — a fast, professional mitigation system with a transferable warranty often satisfies the contingency and keeps the closing on schedule.

For buyers

We run a 48-hour short-term continuous monitor test and deliver a signed written report with your pCi/L reading, usually within days of the inspection period opening. If the level is elevated, we provide a firm mitigation estimate so you can negotiate or proceed with confidence.

For sellers

If a buyer's test comes back high, we can install a mitigation system before your closing date — often within a week — and provide a post-install test and written report for the transaction file. A documented, warranted system turns a radon problem into a selling point.

For realtors

We're built for real estate timelines: fast scheduling, clear written reports, rapid mitigation, and transferable warranties your buyers can rely on. Many foothills agents work with us to connect every client. Visit our dedicated realtor partner page to learn how we support your transactions.

Real Estate Radon Services — Frequently Asked Questions

How fast can you test for a closing?: We typically schedule a 48-hour short-term continuous monitor test within a few days of contact, with a signed written report delivered shortly after retrieval — well inside most inspection windows.
Can you install mitigation before our closing date?: Yes — we prioritize real estate timelines and can often complete a mitigation installation within a week of a high test, with a post-install report for the transaction file.
Is the warranty transferable to the buyer?: Yes. Our mitigation systems come with a transferable warranty, which is a strong selling point and gives buyers confidence in the work.

Learn more about Real Estate Radon Services

Commercial Radon Services

Radon testing and mitigation for schools, offices, daycare centers, and commercial buildings across the foothills and Front Range.

Radon isn't just a residential issue. Schools, daycare centers, offices, and commercial buildings in the Colorado foothills sit on the same granite geology as homes — and employers and property owners have a duty to test and mitigate. We help connect property owners with professionals who provide commercial radon testing and mitigation scaled to your building and your occupancy.

Who should test

Schools, daycare and childcare facilities, office buildings, medical and dental offices, and any commercial space with ground-contact occupancy should test for radon. In a Zone 1 state like Colorado, elevated readings in commercial buildings are common, and testing is increasingly expected as part of facility due diligence.

Testing at commercial scale

Commercial testing requires multiple devices placed per EPA and AARST protocols — typically one per 2,000 square feet of ground-contact area, with a minimum of two per room. The professional handles placement, retrieval, lab analysis, and a consolidated report with a clear recommendation and floor-plan mapping of results.

Commercial mitigation systems

Commercial SSD systems are larger and more complex than residential, often requiring multiple suction points, higher-capacity fans, and integration with the building's HVAC and slab design. The professional designs and installs systems sized to your footprint, occupancy, and foundation type, with minimal disruption to operations.

Documentation and compliance

The professional provides written reports, system documentation, and post-install verification suitable for facility records, insurance, and any regulatory or lease requirements. For schools and childcare facilities, they can align testing with state guidance and help you document compliance.

Commercial Radon Services — Frequently Asked Questions

Do commercial buildings really have radon problems?: Yes. Any ground-contact building in Colorado's Zone 1 can have elevated radon. Schools, daycares, and offices on slab or basement foundations should test — and many are now required to by facility policies or lease terms.
How many test devices does a commercial building need?: Per EPA/AARST protocols, typically one device per 2,000 square feet of ground-contact area, with a minimum of two per room. We handle placement, retrieval, and a consolidated report.
Can you install a system without shutting down our business?: In most cases yes. We schedule core drilling and fan installation around your occupancy, often in off-hours, and keep disruption to occupied spaces minimal.

Learn more about Commercial Radon Services

Location-Specific Radon FAQs — Colorado Foothills Communities

Frequently asked questions about radon testing and mitigation for each community we serve along the HWY 285 corridor.

Radon Mitigation & Testing in Evergreen, CO — FAQ

Evergreen sits in a mountain basin along Bear Creek, ringed by granite outcroppings and ponderosa pine at over 7,000 feet of elevation. The bedrock here is part of the Pikes Peak Batholith — a massive granite formation rich in uranium-bearing minerals that's the geologic engine behind the foothills' radon problem.

Home styles: Evergreen's housing stock ranges from 1960s–70s ranch homes and A-frame cabins to large custom mountain builds and newer subdivisions. Full basements are common, often walk-out, and many older homes have attached crawl spaces — a combination that makes radon entry easy and mitigation design critical.

Local radon context: Evergreen consistently tests on the upper end of the Colorado range. The elevation, granite bedrock, and prevalence of basement foundations mean many homes come in well above the EPA action level of 4.0 pCi/L. If you live in a basement home in Evergreen, testing is a must — and if your level is high, a sub-slab depressurization system usually brings it down dramatically.

Average radon reading: 7.8 pCi/L

Is radon really a problem in Evergreen specifically?: Yes. Evergreen's granite bedrock and 7,000+ foot elevation put it squarely in Colorado's high-risk zone. Many Evergreen basement homes test above the EPA action level — testing is the only way to know your number.
How fast can you get to Evergreen for a test?: We're based in Pine, just down the 285 corridor, so we typically schedule Evergreen testing within a few days and mitigation within about a week.
My Evergreen home has a walk-out basement — does that change things?: Walk-out basements are common here and work well with sub-slab depressurization. We assess the slab, the walk-out wall, and any crawl space to design the right suction layout for your home.

Radon Mitigation & Testing in Evergreen, CO

Radon Mitigation & Testing in Conifer, CO — FAQ

Conifer sits high along the US 285 corridor at over 8,000 feet, perched on the same granite and gneiss bedrock that defines the Front Range foothills. The area's steep terrain and exposed rock faces are visible reminders of the uranium-bearing geology beneath — the source of consistently high radon readings.

Home styles: Conifer is a mix of older mountain cabins, 1970s–90s ranches on acreage, and growing subdivisions of newer construction. Many homes have full or partial basements, and hillside builds frequently include walk-outs and crawl spaces that require tailored mitigation approaches.

Local radon context: At over 8,000 feet on granite bedrock, Conifer homes are among the most likely in the state to test high. The combination of elevation, porous fractured rock, and basement foundations means elevated radon is the norm, not the exception. If you haven't tested your Conifer home, you should — and if your reading is high, mitigation is straightforward and effective.

Average radon reading: 8.6 pCi/L

Why is radon so high in Conifer?: Conifer's elevation above 8,000 feet and its granite bedrock create ideal conditions for radon. Combined with the prevalence of basement foundations, many Conifer homes test well above the EPA action level.
I'm building a new home in Conifer — should I add radon protection?: Absolutely. We install passive, active-ready radon systems during construction for a fraction of a retrofit. In a Zone 1 area like Conifer, it's one of the smartest features you can build in.
Do you service homes off the paved roads in Conifer?: Yes. We routinely serve homes on dirt and forest service roads throughout the Conifer area. Just let us know your access situation when you call.

Radon Mitigation & Testing in Conifer, CO

Radon Mitigation & Testing in Pine, CO — FAQ

Pine is our home base — a small community along North Turkey Creek at nearly 8,000 feet, surrounded by Pike National Forest and underlain by the same granite batholith that defines the foothills' radon risk. The steep, forested terrain and exposed granite are constant reminders of what's beneath every home here.

Home styles: Pine has a mix of older cabins and ranch homes, mid-century builds, and newer construction on larger acreage. Many homes sit on sloped lots with walk-out basements or combination foundations (basement plus crawl space), which require careful, customized mitigation design.

Local radon context: As a Pine-based company, we know this area intimately. The granite geology, high elevation, and prevalence of basement and combination foundations mean most Pine homes should be tested. The professionals we work with have installed hundreds of systems in our own community, and their follow-up tests consistently show dramatic reductions.

Average radon reading: 8.2 pCi/L

Are you actually based in Pine?: Yes — Foothills Radon Testing and Mitigation is locally based right here in Pine. We know the area, the geology, and the home styles because it's our community.
How common is high radon in Pine?: Very common. Pine's granite bedrock and high elevation put it firmly in Colorado's high-risk zone. Most Pine homes with basements should be tested, and many will need mitigation.
Can you handle combination foundations (basement + crawl space)?: Yes — combination foundations are common in Pine, and we design systems that address both the slab and the crawl space with appropriate suction and sealing.

Radon Mitigation & Testing in Pine, CO

Radon Mitigation & Testing in Morrison, CO — FAQ

Morrison sits at the base of the foothills where the mountains meet the plains, framed by dramatic red rock formations and the same granite uplift that defines the Front Range. Though lower in elevation than Pine or Conifer, Morrison sits directly on the fractured bedrock transition zone where radon moves freely from soil to home.

Home styles: Morrison ranges from historic stone and frame homes in old town to larger ranch properties and newer builds on the surrounding hillsides. Foundations vary widely — from full basements in older homes to slab and crawl space combinations in newer construction.

Local radon context: Morrison's position at the foothills transition zone means homes here sit on fractured bedrock that readily transmits radon. While slightly lower in elevation than the high foothills, the geology is just as active. Testing is essential for both older homes with basements and newer builds with slab foundations.

Average radon reading: 6.1 pCi/L

Is radon a problem at Morrison's lower elevation?: Yes. Elevation matters less than geology. Morrison sits on fractured foothills bedrock that transmits radon readily, so homes here can test just as high as those higher up.
My Morrison home is older with a stone foundation — can it be mitigated?: Yes. Older and stone foundations require careful sealing and suction design, but sub-slab depressurization works in virtually any foundation type. We'll assess and give you an honest plan.
Do you serve the Morrison red rocks area?: Yes, we serve all of Morrison and the surrounding area including the foothills neighborhoods near Red Rocks and Bear Creek.

Radon Mitigation & Testing in Morrison, CO

Radon Mitigation & Testing in Kittredge, CO — FAQ

Kittredge is a small community tucked along Bear Creek between Evergreen and Morrison, surrounded by steep, forested slopes and granite outcrops. The narrow valley and exposed rock faces reflect the same uranium-bearing geology that drives high radon throughout the foothills.

Home styles: Kittredge is mostly older mountain homes — many built in the 1960s–80s — with a mix of crawl spaces, partial basements, and some slab construction. The sloped lots and creek proximity mean foundation types vary significantly even within the same neighborhood.

Local radon context: Kittredge's steep terrain and granite bedrock create high radon potential, and the prevalence of crawl spaces in older homes makes encapsulation and sub-membrane depressurization especially relevant here. If your Kittredge home has a dirt or stone crawl space, testing and encapsulation should be on your radar.

Average radon reading: 7.4 pCi/L

My Kittredge home has a dirt crawl space — what should I do?: Test first, and if your level is elevated, we recommend crawl space encapsulation paired with sub-membrane depressurization. This is one of the most effective radon reductions for older foothills homes.
How fast can you come to Kittredge?: Kittredge is very close to our Pine base, so we can often schedule testing within a few days and mitigation within about a week.
Are older Kittredge homes harder to mitigate?: Not harder, but they're different. Varied foundations and older construction require careful assessment, but sub-slab and sub-membrane systems work well in virtually any home here.

Radon Mitigation & Testing in Kittredge, CO

Radon Mitigation & Testing in Indian Hills, CO — FAQ

Indian Hills sits in a forested nook above Parmalee Gulch and Mount Vernon Creek, surrounded by the granite ridges that define this stretch of the foothills. The community's wooded, sloped terrain and exposed rock are hallmarks of the uranium-bearing geology beneath.

Home styles: Indian Hills is predominantly older mountain homes and cabins on wooded lots, many with crawl spaces and partial basements suited to the sloped terrain. Newer construction is limited, so most homes here predate modern radon-resistant building practices.

Local radon context: The combination of granite geology, high elevation, and older homes with unsealed crawl spaces makes Indian Hills a high-risk area for radon. Many homes here have never been tested. We strongly recommend testing, and for homes with crawl spaces, encapsulation is often part of the solution.

Average radon reading: 7.6 pCi/L

Is radon common in Indian Hills?: Yes. The granite geology and older homes with crawl spaces make Indian Hills a high-risk area. If your home has never been tested, it should be.
Do many Indian Hills homes need crawl space encapsulation?: A good number do. Older Indian Hills homes often have dirt or stone crawl spaces, and encapsulation with sub-membrane depressurization is a highly effective solution.
How quickly can you schedule in Indian Hills?: We're nearby in Pine and typically schedule Indian Hills testing within a few days, with mitigation within about a week.

Radon Mitigation & Testing in Indian Hills, CO

Radon Mitigation & Testing in Genesee, CO — FAQ

Genesee is a planned mountain community perched atop a granite ridge just off I-70, with sweeping views and heavily forested lots. The ridge-top setting sits directly on the Pikes Peak granite that underlies so much of the foothills' radon problem.

Home styles: Genesee is mostly larger custom homes built from the 1970s onward, many with full basements and walk-outs that take advantage of the mountain views. The newer construction here means some homes have radon-resistant features, but many do not.

Local radon context: Genesee's ridge-top granite setting and basement-heavy housing stock make it a high-radon area. While some newer homes were built with passive systems, many still test above the EPA action level. If you're not sure whether your Genesee home has radon protection, testing is the only way to know.

Average radon reading: 7.9 pCi/L

My Genesee home was built in the 2000s — could it still have high radon?: Yes. Even newer homes can test high, especially if no active radon system was installed. A passive system, if present, may need a fan added. Testing tells you exactly where you stand.
Does the ridge-top location affect radon?: It can. Ridge-top homes on fractured granite can have strong soil gas flow. The geology matters more than the topography, and Genesee's granite is exactly the kind that produces high radon.
How fast can you get to Genesee?: We reach Genesee easily via the 285 and I-70 corridors, typically scheduling testing within a few days and mitigation within about a week.

Radon Mitigation & Testing in Genesee, CO

Radon Mitigation & Testing in Bailey, CO — FAQ

Bailey sits along the South Platte River in Park County at the southern end of the HWY 285 corridor, surrounded by steep granite peaks and dense national forest. The same Pikes Peak granite that drives radon throughout the foothills extends well into Park County, making Bailey a high-risk area.

Home styles: Bailey is a mix of older cabins, modular and manufactured homes, and growing custom mountain builds on acreage. Foundations vary widely — from full basements to crawl spaces to slab — and many homes on sloped lots have combination foundations that need tailored mitigation.

Local radon context: Bailey's granite geology and rural mountain setting produce consistently high radon potential. Many Bailey homes have never been tested, and the mix of foundation types means mitigation approaches vary. We've installed numerous systems in the Bailey area with excellent results.

Average radon reading: 8.4 pCi/L

Is radon a problem in Park County and Bailey specifically?: Yes. Park County shares the same granite geology as the rest of the foothills, and Bailey homes regularly test above the EPA action level. Testing is strongly recommended.
Do you service homes on dirt roads around Bailey?: We do. Many Bailey homes are on acreage with dirt or forest road access. Just let us know your access situation when you schedule.
My Bailey home has a crawl space and a basement — can you handle both?: Yes. Combination foundations are common in Bailey, and we design systems that address both the basement slab and the crawl space appropriately.

Radon Mitigation & Testing in Bailey, CO

Radon Mitigation & Testing in Aspen Park, CO — FAQ

Aspen Park is a high-elevation community near Conifer along the 285 corridor, sitting on the granite ridgeline that defines this stretch of the Front Range. At over 8,000 feet, the thin air and exposed rock underscore the uranium-bearing geology beneath every home.

Home styles: Aspen Park is primarily mountain homes on wooded lots — a mix of older cabins, 1980s–90s builds, and some newer construction. Basements and crawl spaces are both common, depending on the slope of the lot.

Local radon context: At over 8,000 feet on granite bedrock, Aspen Park shares the high radon risk of neighboring Conifer. The elevation and fractured rock make elevated readings common. Testing is essential, and mitigation is highly effective when properly designed.

Average radon reading: 8.7 pCi/L

Is Aspen Park as high-risk as Conifer for radon?: Yes. Aspen Park shares Conifer's granite geology and similar elevation, so radon risk is comparable. Testing is strongly recommended for all Aspen Park homes.
Do newer Aspen Park homes need testing?: Yes. Even newer homes can test high unless they were built with an active radon system. A passive system, if present, may need a fan. Testing is the only way to know.
How quickly can you schedule in Aspen Park?: Aspen Park is right on our 285 route. We typically schedule testing within a few days and mitigation within about a week.

Radon Mitigation & Testing in Aspen Park, CO

Radon Mitigation & Testing in Shawnee, CO — FAQ

Shawnee is a tiny community along the South Platte River in Park County, surrounded by steep granite peaks and national forest. The remote, high-elevation setting sits on the same uranium-bearing granite that drives radon throughout the 285 corridor.

Home styles: Shawnee is mostly older cabins and mountain homes on large acreage, with a mix of crawl spaces, partial basements, and slab foundations. The rural, off-the-beaten-path character means many homes have never been professionally tested for radon.

Local radon context: Shawnee's granite geology and high elevation make it a high-risk radon area, but its small population means few homes have been tested. If you live in Shawnee, testing is strongly recommended — and if your level is high, mitigation works just as well here as anywhere along the corridor.

Average radon reading: 8.5 pCi/L

Do you really come all the way out to Shawnee?: Yes. Shawnee is part of our Park County service area along the 285 corridor. Scheduling may take a few extra days given the distance, but we make the trip.
Has radon been studied in a small town like Shawnee?: Limited testing has been done given Shawnee's size, but the geology is identical to the rest of the corridor — high-risk. Testing your home is the only reliable way to know.
Can you handle remote acreage properties in Shawnee?: Yes. We routinely service homes on large acreage with dirt or forest road access throughout Park County. Just describe your access when you call.

Radon Mitigation & Testing in Shawnee, CO

Radon Mitigation & Testing in Grant, CO — FAQ

Grant is a small community high on the South Platte River in Park County, near the foot of Kenosha Pass. At over 8,400 feet, it sits on exposed granite and metamorphic rock — the same uranium-bearing geology that defines the region's radon risk, intensified by the high elevation.

Home styles: Grant is predominantly older cabins, modest mountain homes, and some newer builds on acreage. Foundations are a mix of crawl spaces, partial basements, and slabs, with many homes predating radon-resistant construction.

Local radon context: Grant's high elevation and granite bedrock put it firmly in Colorado's high-risk radon zone. The small, rural population means many homes have never been tested. If you live in Grant, a radon test is a simple, affordable step that could protect your family's health.

Average radon reading: 8.9 pCi/L

Does Grant's very high elevation increase radon risk?: Elevation itself doesn't cause radon, but Grant's granite bedrock does — and the high elevation means homes sit close to the fractured rock that releases it. Testing is strongly recommended.
How far out do you travel for service?: Grant is at the far end of our regular service area along the 285 corridor. We make the trip, though scheduling may take a few extra days.
Are older cabins in Grant testable and mitigatable?: Yes. Even older cabins with crawl spaces or partial basements can be tested and, if needed, mitigated with encapsulation or sub-slab depressurization adapted to the foundation.

Radon Mitigation & Testing in Grant, CO

Radon Mitigation & Testing in Idledale, CO — FAQ

Idledale is a tiny community tucked along Bear Creek between Morrison and Kittredge, surrounded by steep, wooded slopes and granite outcrops. The narrow valley and exposed rock reflect the same uranium-bearing geology that drives high radon throughout the foothills.

Home styles: Idledale is almost entirely older mountain homes and cabins, many dating to the mid-20th century, with crawl spaces and partial basements suited to the steep terrain. The older construction means most homes predate any radon-resistant building practices.

Local radon context: Idledale's steep terrain, granite geology, and older homes with crawl spaces make it a high-risk area for radon. The small population means few homes have been tested. We strongly recommend testing, and crawl space encapsulation is often part of the solution here.

Average radon reading: 7.2 pCi/L

My Idledale home has an old crawl space — should I worry about radon?: It's worth testing. Older Idledale homes with dirt or stone crawl spaces are common, and encapsulation with sub-membrane depressurization is a highly effective solution if your level is elevated.
How fast can you get to Idledale?: Idledale is very close to our Pine base. We typically schedule testing within a few days and mitigation within about a week.
Are old cabins harder to mitigate?: Not harder, but different. Older foundations need careful sealing and suction design, but radon systems work in virtually any home. We'll assess and give you an honest plan.

Radon Mitigation & Testing in Idledale, CO

Radon Mitigation & Testing in Idaho Springs, CO — FAQ

Idaho Springs sits in a steep canyon along Clear Creek at the heart of Colorado's historic mining district. The town is surrounded by the same granite and mineral-rich rock that drew miners here 150 years ago — rock that also happens to be the geologic source of the region's radon.

Home styles: Idaho Springs has a mix of historic mining-era homes, mid-century builds, and newer construction. Foundations range from old stone and basement homes to crawl spaces and slabs, with many older structures that predate modern building practices.

Local radon context: Idaho Springs' mining-district geology is rich in the uranium-bearing minerals that produce radon, and the high elevation means homes sit close to the fractured rock. Historic homes with older foundations are especially vulnerable. Testing is strongly recommended, and mitigation is highly effective.

Average radon reading: 8.1 pCi/L

Does Idaho Springs' mining history affect radon?: Indirectly, yes. The same uranium-bearing minerals that drew miners to Idaho Springs are the source of radon. The geology that built the town's history also drives its radon risk.
Can historic Idaho Springs homes be mitigated?: Yes. Older stone and basement foundations require careful sealing and suction design, but sub-slab depressurization works in virtually any foundation. We'll assess and give you an honest plan.
Do you serve Clear Creek County?: Yes. Idaho Springs is part of our extended service area. We schedule testing within a few days to a week depending on our route.

Radon Mitigation & Testing in Idaho Springs, CO

Our Vetting Process — How We Select Radon Professionals

We don't just send your information to random contractors. We have a documented process for evaluating the radon professionals we choose to work with. When considering professionals we may work with, we evaluate relevant factors:

Relevant radon experience
Applicable certifications and credentials (NRPP)
Insurance coverage verification
Experience with the specific service type
Professional reputation and customer ratings
Ability to serve our foothills communities
Communication and customer-service standards

Requirements may vary by service and provider, and individual qualifications are verified where applicable. Read our full vetting process.

How It Works — Our Connection Service

Tell us what you need. Submit a quick request with your ZIP code, foundation type, and what's going on — or just call us.
We review your request. We consider your location and the type of service you need, and we think about which of our carefully vetted professionals is the right fit.
We help connect you. We connect you with an independent radon professional from the providers we work with — someone who serves your area and handles the service you need.
The provider handles the service. The independent professional discusses your project, scheduling, pricing, and performs the actual work. They carry the applicable credentials, insurance, and warranties.

About Foothills Radon Testing and Mitigation

Foothills Radon Testing and Mitigation is a connection and referral service based in Pine, Colorado. We help homeowners, buyers, sellers, and realtors in the Jefferson County & Park County foothills along the HWY 285 corridor connect with carefully vetted, independent radon professionals. We are not a licensed radon mitigation contractor — we don't perform the testing or mitigation work ourselves. What we do is evaluate the professionals we choose to work with, maintain relationships with selected providers, and help connect you with the right professional based on your location and service needs. And because the professionals we work with compensate us for the connection, our service costs homeowners nothing — your rates stay competitive with the local market.

Hours: Mon–Sat, 8:00am – 6:00pm · Phone: (303) 816-3130 · Response: We respond within 2 business hours. More about us.

Credentials & Guarantees

Radon is the second leading cause of lung cancer in the United States, so we connect foothills homeowners exclusively with carefully vetted, NRPP-certified radon professionals who back their work with a 20-year low radon guarantee and decades of real-world experience. Every contractor in our network carries liability insurance, maintains high customer ratings, and offers fully transferable written warranties. These credentials belong to the individual providers, not to Foothills Radon Testing and Mitigation itself; we are a connection service, and the professionals we work with hold the certifications.

• NRPP Certified Professionals

• 20-Year Low Radon Guarantee

• Fully Transferable Warranties

• Decades of Combined Experience

View credentials & guarantees

Service Areas Along the 285 Corridor

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