Published by Best Radon Contractors
Best Radon Contractors publishes directories of radon mitigation and testing companies. Each directory is built from public business records and the companies' own websites, and every listing is free.
Why this directory exists
Most people look for a radon company once, right after a test comes back high or a home inspection flags it. Search results mix installers with home inspectors who only test, and it is hard to tell from a business name which is which. This directory sorts that out for Colorado.
Every listing shows whether the company installs mitigation systems or only tests, the kinds of work its own website describes, and whether that website names a radon license holder who is active on the state's public list. Installers come first on every city page. Ratings and review counts are Google's, shown as they are, and no company pays to be listed. Any paid placement is marked as featured.
If you run a radon company in Colorado and your listing is missing or wrong, tell us and we will fix it. If you want it removed, we will remove it.
How listings are vetted
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.
Right now that is 160 radon contractors in 18 Colorado cities, last refreshed 2026-11-04.
Owners can claim their listing for free. Every claim is checked by a person: a real local business, a matching email domain or a call to the number on the Google listing. Paid placements are marked as featured, premium or best-of wherever they appear.
Corrections and removals
If a listing is wrong, or you want your business removed, tell us. We answer within a week and rebuild the directory with the change.