HUD build-to-rent loans: what Mortgagee Letter 2026-12 allows

What changed

HUD’s multifamily programs have traditionally insured buildings of four or more units: garden, mid-rise and high-rise apartments. Communities of houses built to rent were excluded over fair housing accessibility, valuation and underwriting concerns, and a 2021 “Subdivisions for Rent” memo restricted them. HUD rescinded that memo on April 28, 2025.

Mortgagee Letter 2026-12, issued in response to section 3 of Executive Order 14376 (January 20, 2026), goes further: build-to-rent (BTR) communities are now “treated under the same terms and conditions as traditional multifamily rental developments,” subject to the conditions below. It is effective immediately. The letter carries no date on its face; HUD’s PDF was created October 13, 2026.

Which programs

Program	BTR eligible for
221(d)(4)	New construction only
223(f)	Purchase or refinance of a recently built community: certificate of occupancy less than 3 years before the application

Substantial rehabilitation of an existing BTR community is not listed, and neither is 223(f) for a community older than three years.

The site and ownership rules

1. One property, one site. Five or more units, developed for long-term rental, on a site that is “characteristically uniform and recognizably one cohesive rental property.” One tax parcel is preferred; several contiguous parcels that together define the collateral are acceptable.
2. No interspersed private homes. The site cannot include privately owned parcels or residences.
3. No sales. No sales of parcels or buildings and no partial release of collateral during the insured loan.
4. Mixed sites are allowed. A community that combines BTR homes with traditional apartment buildings is acceptable, but the lender must address the underwriting and accessibility complications in the application.
5. Modular and manufactured construction are generally acceptable but complicate HUD’s insurance of advances for on-site work, so they must be vetted at the concept meeting.

Management and HOAs

• The property must be professionally managed like comparable multifamily or BTR properties in the market.
• On-site management and maintenance should match the market. If they are not on site, the operation needs a local presence with enough staff for this property and the rest of the portfolio.
• Any homeowners association or master-plan governance must not impede HUD’s enforcement or the borrower’s full control. The lender must disclose any HOA at the concept meeting and resolve conflicts by the firm application.

Underwriting rules specific to BTR

Item	Requirement
Experience	Borrower, contractor and manager must show successful experience with similar projects in type and scale
Absorption (new construction)	HUD will consider up to 24 months (the standard cap is 18)
Initial operating deficit escrow	At least the greater of 3% of the loan or 4 months of debt service, sized from comparable BTR lease-ups
Operating expenses	Expect higher costs for low-density layouts; use BTR data, not only apartment data
Replacement reserves	Expect higher initial and annual deposits (more roofs, cladding, windows)
Vacancy, market rate	The greater of 7% or the market rate for comparable projects
Vacancy, affordable	Below 7% can be justified, but at least 5%
Amenities	Judged against the BTR market: private yards and garages can stand in for clubhouses and pools

Smaller projects may need higher vacancy, since each empty home weighs more.

Accessibility and building codes

A detached house, duplex or triplex is not a “covered multifamily dwelling” under the Fair Housing Act. ML 2026-12 therefore exempts those buildings from five Fair Housing Accessibility Guidelines requirements (accessible entrance on an accessible route; accessible route into and through the unit; reachable switches and controls; reinforced walls for grab bars; usable kitchens and bathrooms), while encouraging them. Buildings on the same site with four or more units are covered, and common-use areas and amenities must meet the usual standards. Section 504 applies where there is federal funding, and the ADA applies to any public accommodation. Where laws differ, the stricter one governs.

On building codes, HUD will generally rely on the local building department’s interpretation for detached and small buildings. The letter’s example: NFPA 101 may require sprinklers in new multifamily buildings, but detached rental houses may be exempt depending on building type and separation.

What else to plan for

Everything else in the program still applies. A BTR community financed under 221(d)(4) is new construction, so Davis-Bacon wage rules, the 87% loan-to-cost and 1.15x coverage limits for market-rate deals, the statutory limits and the standard MIP all apply. Lenders will want to raise the deal at a concept meeting, since the letter assigns several items (HOAs, modular construction) to that stage.