FE
TestingCrawlspaceCommercial
Certified RMS/RMP
Radon Pros in Colorado
112 contractorsEPA zone context: Most of Colorado's Front Range corridor is EPA Zone 1 — the highest risk classification. Colorado has one of the highest radon testing rates in the country.
RS
Radon Safety LLC
4.9 (671 Google reviews)
Certified Professional
Licensed Provider: Richard D. Lloyd
Full Service•Lakewood, CO
MitigationTestingCrawlspaceCommercialVapor Barrier+1
Certified RMS
Radon Safety LLC is a dedicated radon services company serving Lakewood, CO. Services include radon mitigation system installation, mitigation system design, radon testing, radon measurement. Works with slab foundations. Methods include sub-slab depressurization, sub-membrane depressurization, heat recovery ventilation. Holds Certified Radon Mitigation Specialist certification. Rated 4.9/5 on Google based on 671 reviews. Offers real estate transaction testing, rush/priority scheduling.
WM
W.B. Montag Radon Services, LLC
Certified Professional
Licensed Provider: William B. Montag
Full Service•Leadville, CO
MitigationTesting
Certified RMS/RMP
RR
MitigationTestingCrawlspaceNew ConstructionCommercial+1
Certified RMSFree Estimates
Red Rock Radon is a dedicated radon services company serving Littleton, CO. Services include radon mitigation system installation, mitigation system design. Works with crawlspaces. Methods include heat recovery ventilation. Holds Certified Radon Mitigation Specialist certification. Offers free estimates.
MH
MILE HIGH RADON CONTROL
Certified Professional
Licensed Provider: Darren Corso
Full Service•Longmont, CO
MitigationTestingCrawlspacePost-Test
Certified RMS
MILE HIGH RADON CONTROL is a dedicated radon services company serving Longmont, CO. Services include radon mitigation system installation, mitigation system design. Works with slab foundations, crawlspaces. Methods include sub-slab depressurization, heat recovery ventilation. Holds Certified Radon Mitigation Specialist certification.
CD
Colorado Dept of Public Health and Env (CDPHE)
Certified Professional
Licensed Provider: James Jarvis
Full Service•Louisville, CO
MitigationTestingCommercial
Certified RMS/RMP
AR
MitigationTestingNew ConstructionCommercialDiagnostic
Certified RMS5-Year Warranty
American Radon, LLC is a dedicated radon services company serving Morrison, CO. Services include radon mitigation system installation, mitigation system design. Methods include heat recovery ventilation. Holds Certified Radon Mitigation Specialist certification. Offers real estate transaction testing. Provides a 5-year warranty on mitigation systems.
HH
MitigationCrawlspaceVapor BarrierSump Pump
Certified RMS
TH
Timberline Home & Property Care, Inc.
Certified Professional
Licensed Provider: Brandon Blomquist
Full Service•Pagosa Springs, CO
MitigationTestingCrawlspace
Certified RMS/RMP
RR
MitigationTestingCommercial
Certified RMS/RMP
Radon Resolve is a dedicated radon services company serving Palisade, CO. Services include radon mitigation system installation, mitigation system design, radon testing, radon measurement. Methods include heat recovery ventilation. Holds Certified Radon Mitigation Specialist and Certified Radon Measurement Professional certifications. Offers real estate transaction testing.
TH
Tiger Home & Building Inspections
Certified Professional
Licensed Provider: Michael J McKernan
Full Service•Silverthorne, CO
MitigationTestingCommercial
Certified RMS/RMP
EE
Epic Enviro Systems
Certified Professional
Licensed Provider: Alan C Selch
Full Service•Steamboat Springs, CO
MitigationTestingCommercial
Certified RMS/RMP
BE
Blu Environmental
5.0 (48 Google reviews)
Certified Professional
Licensed Provider: Charlotte A Dudoit
Full Service•Steamboat Springs, CO
MitigationTestingCrawlspace
Certified RMP/RMS
Blu Environmental is a contractor offering radon-related services serving Steamboat Springs, CO. Services include radon testing, radon measurement, radon mitigation system installation, mitigation system design. Works with crawlspaces. Methods include heat recovery ventilation. Holds Certified Radon Measurement Professional and Certified Radon Mitigation Specialist certifications. Rated 5.0/5 on Google based on 48 reviews. Offers real estate transaction testing.
CL
ColoRadon LLC
5.0 (33 Google reviews)
Certified Professional
Licensed Provider: Kent Molin
Full Service•Wellington, CO
MitigationTestingCrawlspaceNew ConstructionCommercial+2
Certified RMS/RMPFree Estimates
ColoRadon LLC is a dedicated radon services company serving Wellington, CO. Over 20 years of experience. Services include radon mitigation system installation, mitigation system design, radon testing, radon measurement. Works with basements, crawlspaces. Methods include heat recovery ventilation. Holds Certified Radon Mitigation Specialist and Certified Radon Measurement Professional certifications. Rated 5.0/5 on Google based on 33 reviews. Offers free estimates, real estate transaction testing.
Data provided by Google Maps
State Info
Radon levels vary house-to-house even in the same city. Testing your own home is the only reliable way to know your risk.
Popular Cities for Radon Mitigation in Colorado
Radon mitigation in Colorado Springs, Colorado13 local contractors listedRadon mitigation in Denver, Colorado9 local contractors listedRadon mitigation in Aurora, Colorado8 local contractors listedRadon mitigation in Lakewood, Colorado6 local contractors listedRadon mitigation in Fort Collins, Colorado5 local contractors listedRadon mitigation in Englewood, Colorado4 local contractors listedRadon mitigation in Littleton, Colorado4 local contractors listedRadon mitigation in Longmont, Colorado4 local contractors listedRadon mitigation in Castle Rock, Colorado3 local contractors listedRadon mitigation in Grand Junction, Colorado3 local contractors listedRadon mitigation in Parker, Colorado3 local contractors listedRadon mitigation in Arvada, Colorado2 local contractors listedRadon mitigation in Avon, Colorado2 local contractors listedRadon mitigation in Broomfield, Colorado2 local contractors listedRadon mitigation in Centennial, Colorado2 local contractors listedRadon mitigation in Glenwood Springs, Colorado2 local contractors listedRadon mitigation in Golden, Colorado2 local contractors listedRadon mitigation in Highlands Ranch, Colorado2 local contractors listedRadon mitigation in Leadville, Colorado2 local contractors listedRadon mitigation in Loveland, Colorado2 local contractors listedRadon mitigation in Steamboat Springs, Colorado2 local contractors listedRadon mitigation in Wheat Ridge, Colorado2 local contractors listedRadon mitigation in Bellvue, Colorado1 local contractors listedRadon mitigation in Berthoud, Colorado1 local contractors listed
FAQ: Radon Mitigation in Colorado
Why is radon so high in Colorado?
Colorado sits on uranium-rich granitic rock. The high altitude means lower atmospheric pressure, which draws more radon from the soil. Cold winters keep homes sealed tight, trapping radon inside.
Is radon testing required when buying a home in Colorado?
Not legally required, but radon testing is extremely common in Front Range real estate transactions. Most buyers' agents recommend it.
Should I test my Denver-area home?
Yes. The Denver metro is in EPA Zone 1. Individual homes vary widely — some test below 2.0 pCi/L while others exceed 20.0. The only way to know is to test.
How much does radon mitigation cost in Colorado?
Most homeowners in Colorado see mitigation quotes in the low-thousands, but the final cost depends on foundation type, fan location, and pipe routing complexity. A cost calculator can help you benchmark estimates before requesting bids.
Do I need radon testing in Colorado before hiring a contractor?
Yes. A valid short-term or long-term test is the fastest way to confirm if mitigation is needed and to scope the right system design.
What radon level is dangerous in Colorado?
EPA recommends action at 4.0 pCi/L, and many homeowners choose to reduce levels even below that threshold. Most of Colorado's Front Range corridor is EPA Zone 1 — the highest risk classification. Colorado has one of the highest radon testing rates in the country. ZIP-level lookup tools are useful for local context, but home testing is still required.
State Resources for Colorado
Radon mitigation cost in Colorado
Estimate likely project pricing by foundation type and system complexity.
Radon testing guide for Colorado homes
Learn when and how to test, plus how to interpret pCi/L results.
Radon levels and EPA zones in Colorado
See how state-level risk varies and what zone maps can and cannot tell you.
ZIP-level radon risk in Colorado
Check projected local risk by ZIP code before you request quotes.