Radon Testing & Mitigation in Denver, CO
Denver County is EPA Radon Zone 1, and the metro area's housing gives radon two very different sets of entry points depending on which half of the city you are in: pre-war bungalows with stone and block foundations, or post-2000 construction sealed tight enough to hold whatever gets in.
Why radon behaves the way it does in Denver
The ground underneath
The city sits in the Denver Basin on the Denver Formation and overlying alluvium, sediment shed eastward off the Front Range. The parent material traces back to the same uranium-bearing granitic rock that drives radon across the whole Front Range corridor.
The housing here
The older neighbourhoods — Washington Park, Park Hill, Berkeley, the Highlands, Congress Park — are dominated by 1900s-through-1940s bungalows and four-squares with stone or block foundations and basements that were originally utility space, not living space. Those foundations have had a century to settle and crack. Newer metro construction has the opposite profile: sound foundations, but very low natural air-exchange rates, which lets soil gas accumulate rather than dissipate. Both types test elevated; they just get there differently.
What we see locally
Denver's basement-conversion boom is the radon-relevant trend. Turning an unfinished century-old basement into a rental unit, an ADU, a guest suite or a home office moves someone's daily breathing zone into the lowest and highest-concentration level of the building, and typically seals and finishes over the exact cracks and joints radon uses. Test before the drywall goes up — retrofitting a system into a finished basement is more work than installing one into an open one.
What we do in Denver
Neighborhoods and nearby areas we cover
- Washington Park
- Park Hill
- Berkeley
- Highlands
- Congress Park
- Stapleton/Central Park
- Green Valley Ranch
- Platt Park
ZIP codes served in Denver: 80202, 80203, 80204, 80205, 80206, 80209, 80210, 80211, 80212, 80218, 80220, 80224, 80230.
Simple, Fast, Professional Radon Service
A clear, low-stress process from your first call to a verified, working system.
- 1
Schedule a free consultation
Call or request a free consultation online. We'll set a time that works for you.
- 2
Inspect the property
We look at your foundation, basement, or building to understand how radon enters.
- 3
Test or design the system
We test your level and, if needed, plan a system suited to your property.
- 4
Install the system
Our work focuses on safe routing, tidy finishes, and a quiet, reliable system.
- 5
Verify results & explain care
We confirm the system is working and walk you through simple ongoing maintenance.
What Denver customers say
Reviews left by real customers on Google.
Amazing super professionals . Definitely recommend to you guys !
I had a very good experience with AAmerican Radon Solution LLC. Scheduling the radon test was quick and easy, and the technician arrived right on time. They were extremely professional, polite, and respectful of my home. The process was clearly explained, and I received the detailed results super fast. I highly recommend their services to anyone looking for reliable radon testing!
Good prices and very clean and friendly
Excellent! Quality service. Contractor showed up on time and he was really professional. He comunicate all the requirements to us for a proper test. For me, who did this type ot tests countless times I was looking to see if he mentions all the requirements, and he did. This is the first time we are using AAmerican Radon Solution LLC and im very satisfied. I do recommend AAmerican Radon for their services.
Very kind explanation excellent work
Radon questions from Denver homeowners
Specific answers for Denver County, not general radon advice.