From 2015 to 2025, multifamily construction costs increased at an annualized rate of about 4.5 percent. FHA’s base construction-loan limit for a studio in a walk-up building increased at an annualized rate of about 3 percent, from $49,924 under the 2015 limit to $66,864 under the 2025 limit. Over the course of the decade, construction costs increased 55 percent while the loan limit increased just 34 percent.

This matters because the per-unit limit is one of the statutory constraints on how much FHA-insured debt an apartment development can support. As construction costs outran the base limit, that test permitted progressively less debt relative to the cost of building a new unit.

The mismatch was built into the old law. FHA could adjust its multifamily loan limits annually, but those adjustments followed consumer inflation rather than the cost of building apartments.

Section 211 of the 21st Century ROAD to Housing Act does two things. It substantially raises the dollar limits and replaces the old inflation measure with the Census Bureau’s multifamily construction-cost index for future annual adjustments.

The read

While FHA updated its loan limits every year, its indexing tracked consumer inflation rather than multifamily construction costs. As development costs rose faster, the base per-unit limits provided progressively less financing capacity relative to the cost of building apartments.

That mismatch became more consequential as the multifamily debt markets turned beginning in 2022. Interest rates rose, construction credit tightened, and developers had fewer sources of debt available. At precisely the moment FHA could have become more valuable as a source of construction capital, its per-unit limits had already lost substantial ground to the cost of producing the housing.

Section 211 corrects that mismatch. The reset substantially increases the amount of debt permitted under the per-unit test. Going forward, indexing those limits to multifamily construction costs should preserve that financing capacity as building costs change over time.

The implementation question is immediate. Section 211 says the new construction-cost adjustment begins July 1, 2025, which is a date that predates ROAD’s enactment by more than a year. HUD has not yet published a post-enactment adjustment under the new index. I’ll be watching for a catch-up notice, and particularly for how HUD treats the missed 2025 and 2026 adjustment dates.