
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.
Colorado's Best Home Inspections
Licensed Provider: James D. Krumm
Radon Safety LLC
4.9 (671 Google reviews)
Licensed Provider: Richard D. Lloyd
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.
W.B. Montag Radon Services, LLC
Licensed Provider: William B. Montag
NextStep Inspections LLC
5.0 (138 Google reviews)
Licensed Provider: Daniel J Kennelly
D&I Home Inspections, LLC<br> dba Pillar To Post
Licensed Provider: Jamie M Goode
Beagle Home Inspections, LLC
5.0 (34 Google reviews)
Licensed Provider: David A. Holt
Colorado Dept of Public Health and Env (CDPHE)
Licensed Provider: James Jarvis
Quality Home Inspections llc
Licensed Provider: Drew McClellan
Quality Home Inspections llc is a home inspection company with radon testing capabilities serving Loveland, CO. Services include radon testing, radon measurement. Methods include heat recovery ventilation. Holds Certified Radon Measurement Professional certification. Offers real estate transaction testing, rush/priority scheduling, licensed and insured. Provides a 1-year warranty on mitigation systems.
Timberline Home & Property Care, Inc.
Licensed Provider: Brandon Blomquist
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.
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
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.