Radon Knowledge Center
Source-backed guides about residential, rental, commercial, HUD, school, childcare, nursing home, and Montgomery County radon testing.
Does HUD Require Radon Testing for Multifamily Properties?
HUD guidance requires radon to be considered in many HUD environmental reviews, and testing is often the clearest way to document building-specific radon levels.
Read guide →GuideMontgomery County Rental Property Radon Testing Requirements
Montgomery County Bill 26-22 requires radon testing in multifamily and single-family rental housing and includes disclosure and mitigation requirements.
Read guide →GuideMontgomery County Home Sale Radon Testing Requirements
Montgomery County requires most single-family homes in the county to be tested for radon before sale, with the test performed less than one year before settlement.
Read guide →GuideRadon Testing for Schools and Childcare Centers
EPA recommends all schools nationwide be tested for radon and reports that nearly one in five schools had at least one schoolroom above the 4 pCi/L action level in a nationwide survey.
Read guide →GuideProfessional Radon Testing vs DIY Radon Kits
DIY radon kits can be useful for screening, but professional radon testing gives better process control, device placement, documentation, and reporting.
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