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What Environmental Professionals Need to Know Regarding Radon Testing Standards
7/1/2025 · by Partner Engineering and Science · Multifamily · Research and Background Documents
In March 2025, the Federal Housing Finance Agency (FHFA) rescinded its 2022 directive that had imposed standardized radon testing requirements on all multifamily properties financed through Fannie Mae and Freddie Mac. Subsequent public announcements regarding agency radon testing changes were made with Fannie Mae finalizing their guidance documents in April 2025. Now Freddie Mac is finalizing its guidance documents as of May 22, 2025. This article explains the updates to the Freddie Mac Guide Chapter 61 – Environmental Requirements and Exhibit 11: Radon Testing and Mitigation Standards. This update introduces several notable changes from the prior 2023 version, impacting Environmental Professionals (EPs), lenders, and property stakeholders involved in multifamily housing transactions.
Tags: Fannie Mae · Freddie Mac · Radon Testing ·