HUD’s Multifamily Housing Policy

On April 3, 2013, the U.S. Department of Housing and Urban Development (HUD) announced significant steps would be taken towards eliminating radon exposure in renter-occupied homes by issuing two new policies that incorporate radon testing and mitigation into HUD programs to help prevent some of the estimated 21,000 lung cancer deaths radon causes in the United States every year.

Effective June 4, 2013, HUD’s Office of Multifamily Housing new policy requires radon testing and, if applicable, mitigation for most new FHA-insured construction, conversion and substantial rehabilitation projects, as well as most FHA-insured refinance transactions.

Effective May 28, 2016, HUD’s Multifamily Accelerated Processing (MAP) Guide was updated to include revisions to the radon testing and mitigation policy outlined in Mortgagee Letter 2013-07. These updates supersede Mortgagee Letter 2013-07.

Policies Require National Radon Certification

For testing and mitigation of FHA Multifamily Properties, HUD requires that nationally certified professionals be used.

 SEARCH TO FIND AN AARST-NRPP Certified Professional

While not required, many NRPP Professionals have additional training and have a Certificate for either Multifamily Measurement or Multifamily Mitigation. This extra training is identified by special Icons in the database search.  mfmi-badgemfme-badgeMore about Advanced Certificates for NRPP Professionals

 The following resources are to assist you in understanding the HUD Multifamily Policy:



  • HUD MAP (Multifamily Accelerated Processing) Guide Radon Policy UPDATE (Staff Operational  Training):
    Webinar 6/7/2016 (Click Below for VIDEO) 
  • HUD Multifamily Radon Policy Update Webcast (Stakeholders & Technicians):
    Webinar 6/9/2016 (Click Below for VIDEO)




  • HUD Radon Webinar 5/29/2013 (Click Below for AUDIO)