Agency multifamily loans: pricing, supplemental debt and rate locks

Why agency program requirements matter

Most CRE capital sources have a relatively flat program structure, one or two products, similar pricing across deals, modest variation in execution mechanics. Agency multifamily is the opposite. Fannie DUS has roughly a dozen distinct executions; Freddie Optigo has a comparable lineup. Each execution has its own eligibility criteria, sizing constraints, pricing benefit, and operational mechanics.

Sponsors who route a deal to the right execution capture 15 to 50 bps of pricing benefit and sometimes meaningful additional proceeds versus running the deal through a generic agency placement. The placement firm's job is to identify which executions the deal qualifies for and to price each option in parallel.

This pillar walks through the executions and mechanics that move money on a meaningful percentage of agency placements: DUS MBS pricing translation, tier thresholds, supplemental sizing, MAH/TAH, Green Rewards, Near-Stabilization, SARM, Index Lock, assumption mechanics, and volume-cap seasonality.

Step 1: DUS MBS pricing translation

DUS MBS pricing is what sets the sponsor's rate. The DUS lender executes the loan into a DUS MBS sold to investors at a market-determined spread to the matching-tenor Treasury. That MBS spread plus Fannie's g-fee plus the DUS lender's servicing spread plus any program-specific add-ons equals the gross note rate.

Sponsors see the all-in rate; the DUS lender's quote sheet typically shows Treasury and spread to Treasury, with the spread implicitly bundling g-fee, MBS spread, and servicer spread. Track DUS MBS spreads alongside Treasuries for full transparency on pricing movement.

Step 3: supplemental sizing math

Supplemental loan sizing tests three constraints: (1) combined LTV (existing senior plus supplemental) against current appraised value, typically capped at 75% to 80%; (2) combined DSCR including the supplemental's debt service, typically minimum 1.25x; (3) program-specific seasoning (typically 12 months from senior origination) and other eligibility rules. The supplemental sizes to the binding minimum.

Worked example: existing $20M Fannie DUS senior at 70% LTV, originated 18 months ago. Property appreciated to $34M; NOI grew from $2.0M to $2.4M. Test 1 (combined LTV at 75%) caps combined balance at $25.5M, allowing supplemental of $5.5M. Test 2 (combined DSCR) would allow up to ~$7.9M supplemental. Test 3 met. Supplemental sizes to $5.5M.

Step 4: MAH and TAH affordable executions

Common qualifying restrictions: LIHTC, HUD Section 8 project-based contracts, project-based voucher contracts, state or local affordability LURAs, inclusionary zoning. Many sponsors with mixed-income properties qualify but do not realize it.

MAH and TAH count toward Fannie's and Freddie's mission-driven business goals under FHFA scoring, which is why the agencies subsidize the pricing. Mission-eligible business is also less affected by the Q4 volume-cap dynamics described in Step 9.

Step 5. Green Rewards underwriting uplift

Five-step mechanics: energy audit, NOI uplift, sizing benefit, pricing benefit, retrofit commitment. Sponsor commits to completing audited retrofit scope within 12 months of closing. Failure to complete can trigger pricing reset to standard agency.

Step 6. Near-Stabilization for properties not yet at full DSCR

Near-Stabilization (Fannie) and similar Freddie executions allow agency permanent placement on properties at 75% to 90% occupancy that have not yet hit standard DSCR thresholds but are projected to stabilize within 6 to 12 months.

Strategic value: locks the long-term agency execution at the early end of the lease-up window, eliminating rate exposure between completion and full stabilization.

Step 7: SARM and Index Lock, execution mechanics

Fannie SARM (Structured ARM): 7- or 10-year floating-rate execution priced over SOFR with embedded interest-rate caps included in the loan structure (cap cost amortized into spread). Borrower has defined conversion option to fixed-rate execution at any point.

Freddie Index Lock: locks the underlying Treasury index early in the application process while spread is set later. Useful in rising-rate environments to reduce Treasury exposure during the underwriting and closing window. Cost: typically a small premium over standard rate lock.

Selection: SARM works best for sponsors who want long-dated floating-rate optionality with the ability to convert to fixed if rates fall. Index Lock works best as an episodic timing tool during volatile Treasury periods.

Step 8: assumption mechanics on agency loans

DUS loan assumption allows the buyer to take over the seller's existing Fannie DUS loan at the existing rate and terms. Assumption fee typically 1% of balance plus lender legal ($25K-$75K). Buyer must pass standard agency net-worth, liquidity, and experience tests. Closes in 60-90 days.

Most valuable when existing loan rate is materially below current market. On a property with a 4.0% loan in a 6.0% rate environment, the rate differential typically equates to 5% to 10% of property value depending on remaining term.

Negotiation lever at sale: a sponsor selling a property with an attractive existing loan should price the loan-assumption value into the asking price.

Step 9: volume cap dynamics and Q4 pricing

FHFA sets annual production caps for Fannie and Freddie multifamily lending, an aggregate dollar amount with sub-targets for mission-driven business. As the agencies approach their caps in Q3 and Q4, mission-eligible business is prioritized; standard executions can experience 5 to 15 bps wider pricing or pulled-back appetite until the cap resets January 1.

Practical move: time conventional agency placements to Q1 or Q2 when possible. Mission-eligible deals (MAH, TAH, Green Rewards qualifying) are not subject to Q4 dynamics and can place at competitive pricing throughout the year.

Frequently asked questions