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.
Direct answer
HUD’s policy is nuanced: the notice says radon must be considered as part of the site contamination analysis for covered HUD environmental reviews, but the notice itself says testing is not always the only method. In practice, testing is often the strongest way to document the actual indoor radon level in a specific building.
Why testing is powerful
HUD notes that radon cannot be seen, tasted, or smelled and that the only method for determining the precise radon level in a specific building is to test indoor air. If testing shows levels below 4 pCi/L, that documentation can help show that mitigation is not required for that tested building under the notice.
Who should care
- Multifamily owners
- Affordable housing operators
- Nursing homes and senior housing groups
- Lenders and refinance teams
- Environmental consultants
- Property managers
Official sources
- EPA: Health Risk of Radon
- EPA: Radon in Schools
- HUD: Addressing Radon in the Environmental Review Process
- Montgomery County Code Sec. 40-13C
Disclaimer: This page is educational and does not replace legal, lender, HUD program, or environmental consultant guidance.