Sponsors (48)
The bill makes it considerably easier and cheaper for homeowners to finance ADUs and could increase rental supply while improving secondary‑market liquidity, but it raises meaningful taxpayer exposure and borrower/default risks and creates regulatory and access limits that may blunt benefits for lower‑income households.
Homeowners gain a clearer path to finance building ADUs through FHA‑insured second‑lien loans — with premiums capped (≤1%/yr), loans that can be sized to projected ADU rent, and an ADU definition that includes modular/manufactured units and conversions — making ADU construction more affordable and feasible.
Renters — including lower‑income tenants — could see more rental unit supply as the financing incentives increase ADU construction, potentially expanding more affordable, ground‑level housing options.
Homebuyers, lenders, and mortgage investors benefit from allowing GSEs (Fannie/Freddie) to purchase and securitize certain loans, creating a more consistent secondary market and potentially easier mortgage availability and liquidity.
Taxpayers face increased contingent fiscal risk because insuring ADU second liens expands FHA exposure and allowing GSE purchase/securitization could transfer losses to the government if the GSEs later require support.
Homeowners who take insured second liens to build ADUs may increase household debt and face higher foreclosure risk if projected ADU rental income falls short or the unit underperforms.
Allowing broad GSE participation could incentivize looser underwriting in the section 259/ADU loan market, raising the risk of riskier lending and higher borrower defaults.
Based on analysis of 3 sections of legislative text.
Authorizes an FHA-insured program for second-lien ADU loans and allows Fannie/Freddie to purchase/securitize those loans unless FHFA blocks them for risk reasons.
Official title: To amend the National Housing Act to direct the Secretary of Housing and Urban Development to establish a program to insure certain second liens secured against property for the purpose of financing the construction of an accessory dwelling unit, and for other purposes.
Introduced July 21, 2025 by Sam T. Liccardo · Last progress July 21, 2025
Creates a new FHA insurance program to insure certain second-lien loans used to build or convert accessory dwelling units (ADUs) on single-family properties, with limits on loan size and insurer premium caps, and requires annual reports to Congress. It also directs FHFA to allow Fannie Mae and Freddie Mac to buy and securitize these FHA-insured ADU loans unless the FHFA Director finds excessive market risk. The FHA must set up the program within two years and may issue implementing rules; the FHFA must disclose purchases and securitizations in its annual report and may block purchases only if they pose unmitigable systemic risk.