EPA 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.
4.6 (77 Google reviews)
Licensed Provider: Jeff Sand
Straight Edge Home Inspections LLC is a contractor offering radon-related services serving Dolores, CO. Services include radon mitigation system installation, mitigation system design. Works with crawlspaces. Holds Certified Radon Mitigation Specialist certification. Rated 4.6/5 on Google based on 77 reviews.
Professional Advantage Radon is a dedicated radon services company serving Elizabeth, CO. Established in 1986. Services include radon testing, radon mitigation system installation. Methods include heat recovery ventilation. Rated 5.0/5 on Google based on 12 reviews. Offers free estimates, licensed and insured. Provides a 99-year warranty on mitigation systems.
4.9 (4095 Google reviews)
Licensed Provider: Diego Peterson
Axium Inspections is a dedicated radon services company serving Englewood, CO. Services include radon testing, radon measurement, radon mitigation system installation, mitigation system design. Holds Certified Radon Measurement Professional and Certified Radon Mitigation Specialist certifications. Rated 4.9/5 on Google based on 4095 reviews. Offers rush/priority scheduling.
5.0 (1 Google reviews)
Licensed Provider: Rachel A. Peterson
4.8 (196 Google reviews)
Licensed Provider: Robert Orr
Axium Inspections is a dedicated radon services company serving Englewood, CO. Established in 2007. Services include radon testing, radon measurement, radon mitigation system installation, mitigation system design. Works with slab foundations, crawlspaces. Methods include sub-slab depressurization, sub-membrane depressurization, heat recovery ventilation, passive radon systems. Holds Certified Radon Measurement Professional and Certified Radon Mitigation Specialist certifications. Rated 4.8/5 on Google based on 196 reviews. Offers real estate transaction testing, rush/priority scheduling.
4.6 (38 Google reviews)
Licensed Provider: Dr. Leo Moorman
Radon Home Measurement & Mitigation is a dedicated radon services company serving Fort Collins, CO. Established in 1999. Services include radon mitigation system installation, mitigation system design, radon testing, radon measurement. Works with slab foundations. Methods include heat recovery ventilation. Holds Certified Radon Mitigation Specialist and Certified Radon Measurement Professional certifications. Rated 4.6/5 on Google based on 38 reviews. Offers free estimates, real estate transaction testing.
5.0 (5 Google reviews)
Licensed Provider: Gregory Marshall
Licensed Provider: Steve A Conway
ACE Radon Corporation is a dedicated radon services company serving Glenwood Springs, CO. Established in 1987. Services include radon testing, radon mitigation system installation. Works with basements, crawlspaces. Methods include heat recovery ventilation. Rated 5.0/5 on Google based on 2 reviews. Offers free estimates, real estate transaction testing, rush/priority scheduling, financing options. Provides a 5-year warranty on mitigation systems.
4.8 (33 Google reviews)
Licensed Provider: Eric Starszak
Radon Solutions LLC is a dedicated radon services company serving Glenwood Springs, CO. Services include radon mitigation system installation, mitigation system design. Holds Certified Radon Mitigation Specialist certification. Rated 4.8/5 on Google based on 33 reviews. Offers real estate transaction testing.
5.0 (91 Google reviews)
Licensed Provider: Jesse Green
American Radon Mitigation, Inc. is a dedicated radon services company serving Golden, CO. Services include radon mitigation system installation, mitigation system design, radon testing, radon measurement. Works with basements, slab foundations. Methods include heat recovery ventilation, passive radon systems. Holds Certified Radon Mitigation Specialist and Certified Radon Measurement Professional certifications. Rated 5.0/5 on Google based on 91 reviews. Offers rush/priority scheduling.
4.9 (149 Google reviews)
Licensed Provider: Joshua K Moore
Rapid Response is a contractor offering radon-related services serving Grand Junction, CO. Services include radon mitigation system installation, mitigation system design, radon testing, radon measurement. Works with crawlspaces. Methods include heat recovery ventilation. Holds Certified Radon Mitigation Specialist and Certified Radon Measurement Professional certifications. Rated 4.9/5 on Google based on 149 reviews.
4.5 (4 Google reviews)
Licensed Provider: Stephen Gustav Geuder
Stanton Radon is a dedicated radon services company serving Grand Junction, CO. Established in 2010. 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 4.5/5 on Google based on 4 reviews. Offers licensed and insured. Provides a 99-year warranty on mitigation systems.
5.0 (4 Google reviews)
Radon levels vary house-to-house even in the same city. Testing your own home is the only reliable way to know your risk.
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.
Not legally required, but radon testing is extremely common in Front Range real estate transactions. Most buyers' agents recommend it.
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.
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.
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.
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.
Estimate likely project pricing by foundation type and system complexity.
Learn when and how to test, plus how to interpret pCi/L results.
See how state-level risk varies and what zone maps can and cannot tell you.
Check projected local risk by ZIP code before you request quotes.