Ratings, services and phone numbers for 160 radon mitigation and testing companies in Colorado.
Axium Inspections is a Colorado home and commercial inspection company in Denver that also installs radon mitigation systems. It has served the area since 2007 and has more…
On South Federal Boulevard in Englewood, Affordable Radon Services has built one of the larger review counts among Colorado radon companies, with 706 Google reviews averaging 4.9, 674…
Radon Safety LLC installs radon mitigation systems for the Denver area and the Front Range from one central Lakewood office, under the same ownership for over 17 years.…
APEX Radon in Parker installs custom radon mitigation systems for homes and businesses across the Denver Metro area, Fort Collins and Colorado Springs, with over a decade of…
Absolute Radon Safety has done radon work in the Denver metro area since 2014, as a locally owned, owner-operated business. It installs custom radon mitigation systems and tests…
Drennen Custom Contracting is a Fort Collins general contractor that has served Northern Colorado since 1973 and works as both a roofer and a radon contractor. Its licensed…
We searched Google Maps for radon mitigation in 38 Colorado cities and added a public business database.
A business stays only if its own website or Maps listing mentions radon. Plumbers and electricians that showed up in searches were removed.
Each company's own site tells us whether it installs systems, only tests, or handles crawlspaces, new homes or commercial buildings.
Where a site names a radon mitigation license holder, we match it against the active licenses DORA publishes.
Colorado Radon Contractors lists companies that test for radon or install radon mitigation systems in Colorado. We found them by searching Google Maps for radon mitigation in 38 Colorado cities and by searching a public business database for radon companies. A business stays only when its own website or its Maps listing mentions radon work, and closed businesses and duplicates are removed.
We read each company's own website to fill in what it does: installs systems, tests only, crawlspaces, new construction, commercial buildings, warranties and free estimates. When a website does not say, the listing shows "not enough info" rather than a guess. Colorado requires radon measurement and mitigation professionals to hold a DORA license, and a listing carries "Colorado radon license shown" only when its website names a person or license number that is active on the list DORA publishes. Ratings and review counts are Google's, shown as they are.
Owners can claim a listing to correct details or add photos. A person checks every claim. Published by Best Radon Contractors.
Colorado's state health department says radon is found at elevated levels in one out of every two Colorado homes. Radon is a gas that comes from the breakdown of uranium in the soil, and it enters a home from the ground beneath it. The department calls it the leading cause of lung cancer among non-smokers in the U.S. and links it to about 500 lung cancer deaths a year in Colorado. You cannot see or smell it, so the first step is always a test.
A short-term test runs 48 to 120 hours, with the house closed for 12 hours before it starts. A long-term test runs from 91 days to a year and gives a better picture across the seasons. Do-it-yourself kits cost about $10 to $50 at home improvement stores, and the state sells discounted kits. If you are buying a home, the state encourages a test during the inspection by a licensed radon measurement professional. For a sale, the test goes in the lowest area that could become living space, such as an unfinished basement.
This directory lists two kinds of company. Installers design and put in mitigation systems. Testing-only companies, most of them home inspectors, measure the level but do not install anything; their cards say "Testing only." Installers are shown first on every city page. If your test comes back high, you need an installer.
The state says the most effective fix is usually sub-slab depressurization: a fan and pipe that draw radon from under the slab. A crawl space gets a sealed membrane with the same kind of suction under it. Sealing cracks alone is not recommended. A system in Colorado usually costs about $1,000 to $2,000, unless the house has difficult design problems. If your water comes from a private well and your air test is high, test the water too.
Colorado requires radon measurement and mitigation professionals to be licensed by DORA's Office of Radon Professionals and certified by NRPP or NRSB. A listing marked "Colorado radon license shown" names a person or license number on its own website that is active on the list DORA publishes. Every other company may be licensed too; ask for the license number and look it up before you sign.
Renting? Since August 7, 2023, Colorado landlords must give tenants radon information when a lease is signed, and tenants may test their own units. On a low income, ask about the state's Low Income Radon Mitigation Assistance program.
We searched Google Maps for radon mitigation in 38 Colorado cities and added a public business database. A company stays when its own website or Maps listing mentions radon work. Owners can claim a listing to correct details.
An installer designs and puts in a radon mitigation system, usually a fan and pipe that draw radon from under the slab. A testing-only company, often a home inspector, measures the level but does not install systems. Listings that only test are labeled.
Yes. Colorado's health department says radon measurement and mitigation professionals must be licensed by DORA's Office of Radon Professionals and certified by NRPP or NRSB. Complaints go to DORA, NRPP or NRSB.
Colorado's health department says a mitigation system usually costs about $1,000 to $2,000, unless the house has difficult design problems. Ask each contractor for a written quote.
Colorado's health department runs Low Income Radon Mitigation Assistance (LIRMA), with separate applications for homeowners and contractors.
No. A basic listing is free and stays free. Paid featured positions, if any are sold, are marked as featured wherever they appear.