Why It Matters
For investors acquiring apartment buildings with 5 or more units, agency debt is typically the lowest-cost, longest-duration financing available. Fannie Mae's DUS program and Freddie Mac's Optigo program dominate institutional multifamily lending, offering fixed rates, 25–30 year amortization, and non-recourse terms that bank loans rarely match. Understanding how agency underwriting works — and what its exit restrictions cost — is essential before closing on any stabilized apartment deal.
At a Glance
- Who offers it: Fannie Mae (DUS program) and Freddie Mac (Optigo program) — not banks directly; approved lenders originate under GSE guidelines
- Property type: Multifamily only — 5+ residential units; NOT available for 1–4 unit residential properties
- Typical terms: 5–30 year fixed rate, 25–30 year amortization, 75–80% LTV, 1.25x DSCR minimum
- Non-recourse: Lender cannot pursue borrower's personal assets on default (standard fraud/waste carve-outs apply)
- Exit cost: Yield maintenance or defeasance — NOT simple prepayment; model this before committing to a hold period
How It Works
Agency debt flows through an approved-lender network, not directly from Fannie Mae or Freddie Mac. Both GSEs certify private lenders — called DUS lenders (Fannie) or Optigo lenders (Freddie) — to originate, underwrite, and service loans on their behalf. These approved lenders retain a portion of the credit risk, which aligns incentives to underwrite carefully. Once closed, the loan is pooled with other agency loans and securitized into mortgage-backed securities purchased by pension funds, insurance companies, and foreign governments. This continuous capital recycling keeps agency rates competitive regardless of individual bank balance sheet constraints.
Qualifying for agency debt requires meeting specific stabilization benchmarks. The property must demonstrate 90% or higher physical occupancy for at least 90 consecutive days before closing. Underwriters analyze net operating income against projected debt payments, requiring a minimum 1.25x debt service coverage ratio (NOI ÷ annual debt service). LTV caps range from 75% to 80% for market-rate multifamily. Properties must be structurally sound — agency lenders require third-party property condition reports and environmental assessments as part of multifamily due diligence. These are not hard-money closing-in-a-week transactions; agency loans typically take 45–90 days from application to funding.
The trade-off for low rates and long terms is a restrictive prepayment structure. Agency loans are not freely prepayable. Borrowers choosing yield maintenance pay the present value of remaining interest payments at a spread over current Treasury yields — in a falling-rate environment that can mean paying hundreds of thousands of dollars to exit early. Defeasance substitutes US Treasury securities as collateral in place of the property, achieving the same economic result through a different mechanism; it requires a defeasance consultant and 30–60 days to execute. Some shorter-term agency products use step-down prepayment penalties (e.g., 5% declining to 1%), but most 10-year agency loans carry yield maintenance for the first 9.5 years. Investors who fail to model exit costs at acquisition often discover this penalty at the worst possible time.
Real-World Example
Lisa owns a 24-unit apartment building in Columbus, Ohio and is refinancing after a two-year value-add renovation. Her stabilized NOI is $182,000 annually, and she's targeting a 10-year fixed loan to lock in her cost of debt. Her lender quotes her a Fannie Mae DUS loan at 6.25% fixed, 30-year amortization, on $2.1M — representing 78% LTV against a new appraisal of $2.7M. Annual debt service comes to $154,800, giving a 1.18x DSCR. The underwriter requires her to reduce the loan to $1.95M to hit the 1.25x DSCR floor ($182,000 ÷ $154,800 DSCR is 1.18x; she needs NOI to debt service = $145,600 → loan recalculated at $1.95M giving $143,700 annual debt service). Lisa accepts the lower loan amount. The loan is non-recourse, meaning her other properties and personal accounts are shielded from default. She notes that her yield maintenance window runs for 9.5 years — if she sells before then, exit costs could reach $80,000–$150,000 depending on where rates are. She builds that into her hold-period analysis before signing.
Pros & Cons
- Lowest rate available for stabilized multifamily — priced off Treasuries through the GSE securitization engine, not individual bank cost of funds
- Non-recourse protection — personal assets shielded from default (with standard carve-outs)
- Long fixed terms — 10- and 15-year fixed-rate loans eliminate refinance risk during the hold period
- Assumable — buyer can assume the existing loan on sale, a meaningful advantage when selling in a high-rate environment
- High leverage — up to 80% LTV on qualifying properties, preserving equity for additional acquisitions
- Rigid stabilization requirements — 90% occupancy for 90 days; properties still in lease-up do not qualify
- Exit restrictions — yield maintenance and defeasance penalties can be substantial; not suitable for short planned hold periods
- Slow closing — 45–90 days minimum; incompatible with competitive purchase timelines
- Complexity — DUS/Optigo lender network, third-party reports, environmental reviews add transaction cost
- Multifamily only — not available for 1–4 unit residential properties; those use conventional/conforming loans
Watch Out
- Model yield maintenance before committing to a hold period. A 10-year loan with yield maintenance costs can run $100,000–$500,000+ on a $2M–$5M deal. Run the penalty scenario at year 3, 5, and 7 before signing.
- 90-day occupancy is a hard floor, not a soft guideline. Lenders verify with rent rolls, bank statements, and third-party reports. Attempting to close before reaching true stabilization triggers delays or denial.
- "Non-recourse" has carve-outs that matter. Environmental violations, fraud, misrepresentation, and intentional waste typically convert the loan to recourse. Read the carve-out provisions before assuming full personal liability protection.
- Recourse loan vs. non-recourse is a material difference. Bank portfolio loans for multifamily are almost always full recourse. Agency debt's non-recourse structure is one of its most underappreciated advantages.
Ask an Investor
The Takeaway
Agency debt from Fannie Mae or Freddie Mac is the benchmark financing for stabilized apartment buildings — competitively priced, long-duration, and non-recourse. The catch is real: occupancy requirements, slow timelines, and prepayment penalties that punish early exits. Investors who understand the entry requirements and model the exit costs accurately can use agency debt to lock in decades of predictable financing at rates no bank can consistently match.