Build-to-Rent to Draw Tailwinds from Policy Shifts

Key Points

• HUD has made qualifying build-to-rent (BTR) communities eligible for FHA multifamily financing, creating a new source of capital for the sector.
• The 21st Century ROAD to Housing Act excludes qualifying BTR programs from acquisition restrictions on large institutional investors.
• Proposed U.S. Department of the Treasury regulations establish standards for BTR purchases ahead of restrictions that begin in 2027.
• BTR accounted for 6.9% of single-family housing starts in the second quarter of 2026, well above its long-run average of 2.2%.

New Federal Policies More Supportive of Build-to-Rent

Build-to-rent, already one of the fastest-growing commercial real estate sectors, has gained additional momentum following three recent federal policy developments.

HUD's decision to make qualifying BTR communities eligible for FHA multifamily financing opens a new capital channel for developers. The 21st Century ROAD to Housing Act's exemption of BTR projects from institutional investor acquisition restrictions preserves the sector's core ownership model. And new proposed U.S. Department of the Treasury regulations specifically establish standards for BTR programs, recognizing their role in expanding housing supply.

Taken together, these measures point to a more supportive and more clearly defined federal framework for BTR development.

BTR Poised to Build on Past Success

Fueled by strong renter demand for a single-family rental lifestyle, affordability challenges in the for-sale market, and a growing preference for professionally managed communities, BTR development continues to hold above historic highs.

Citing U.S. Census Bureau data, Arbor reports that single-family BTR starts totaled 63,000 units over the 12 months ending in the second quarter of 2026, representing 6.9% of all single-family starts. For context, BTR's share averaged 2.2% from 1975 through 2011 and had never exceeded 6.0% before 2022.

Broader single-family rental fundamentals remain supportive as well. According to Arbor's latest Single-Family Rental Investment Snapshot, SFR occupancy reached 94.3%, while annual rent growth accelerated to 2.9%. With new federal policy now in place, the sector is strongly positioned to reach new highs.

FHA Opens a New Capital Source for BTR Developers

HUD's new guidance expands access to FHA-insured multifamily financing for qualifying BTR projects, creating an entirely new source of capital for the sector. Previously, HUD multifamily insurance was largely limited to properties with four or more units. Professionally managed rental developments of detached single-family homes, duplexes, and triplexes can now access FHA financing under the same general framework as traditional multifamily properties.

To qualify, a community must:

• Operate as one cohesive rental property with a minimum of five units, professionally managed for long-term rental use.

• Mixed projects that combine a BTR component with traditional multifamily are also acceptable.

Two FHA programs are especially relevant:

• FHA Section 221(d)(4) supports new construction, pairing high leverage and fixed rates with long-term permanent debt.

• FHA Section 223(f) supports the acquisition and refinancing of completed communities, providing permanent financing for stabilized assets. Only projects that have received a certificate of occupancy on their final building within the last three years of Firm Application Submission are eligible.

Compared with other BTR capital providers, HUD's entry into the sector offers developers longer-term fixed-rate financing, higher leverage than many alternative providers, and more competitive borrowing costs. The resulting reduction in debt service can, in turn, support stronger investment returns.

ROAD to Housing Act Provided Greater Certainty

The 21st Century ROAD to Housing Act, enacted in July, restricts large institutional investors from purchasing single-family homes. The final legislation, however, specifically excludes qualifying BTR programs from those acquisition restrictions.

This distinction ensures that long-term ownership models remain viable. Equally important, the final framework gives lenders, equity partners, and developers greater visibility into the future regulatory environment, a meaningful consideration for projects that are planned and capitalized years in advance.

Treasury's Proposed Rules to Add Strength to BTR

On October 22, 2026, the U.S. Treasury Department proposed regulations that would implement the restrictions on large institutional investors, defined as entities with investment control over at least 350 single-family homes, in last year’s housing act. Beginning January 7, 2027, large institutional investors generally may not purchase single-family homes unless the purchase qualifies as an exception, a category that includes BTR programs.

The proposed regulations establish standards for purchases made through BTR programs and are designed to promote continued investment in new housing development. Rather than creating uncertainty, Treasury provided a framework that helps define how developers and investors can continue pursuing BTR projects under the new law.

The Takeaway

BTR starts remained historically elevated in the second quarter, helping to maintain healthy supply and demand dynamics. The convergence of FHA eligibility, legislative protections in the ROAD to Housing Act, and Treasury's proposed implementation framework represents one of the strongest endorsements BTR has received from federal policymakers. Together, these developments expand access to capital, reinforce the legitimacy of the BTR model, and create greater certainty for future investment.

For developers, the opportunity lies in pairing the right project with the right capital. As one of the leading lenders with deep expertise in both build-to-rent and FHA multifamily financing, Arbor is positioned to help developers capitalize on expanded FHA eligibility and the new opportunities created by recent federal policy changes. Arbor received IMN's SFR Securitization of the Year 2025 award and was the first lender to launch a BTR CLO.

Get in touch with Arbor to partner with an industry-leading lender that will support your project every step of the way, throughout its lifecycle.

For more build-to-rent insights and research, visit Arbor.com and Traded.co.