Homeowner guides

Radon Mitigation guides

Last reviewed November 2026. Each guide cites the public page each fact came from.

Browse radon mitigation contractors with a license on record · What does it cost?

• How do I test my home for radon?How to test a home for radon with a short-term kit or a qualified tester, using EPA and CDC steps. What to do if the result is 4 pCi/L or higher.
• My radon test came back high. What now?What EPA's 4 pCi/L radon action level means, when to follow up with another test, and where to read mitigation cost and find a contractor.