Bridge Loan Underwriting: When It Fits, When It Kills You
Exit DSCR, refinance risk, and the three scenarios where bridge debt actually makes sense.
The Bridge Thesis: Buy Time, Pay for It
Bridge loans are short-term, asset-backed loans that exist to bridge a gap — typically the period between acquisition and stabilization, or between purchase and a refinance event. Terms are 12–36 months, leverage runs 70–80% of cost (sometimes higher with mezz), interest is usually paid on a current basis with no amortization, and rates currently sit at SOFR + 350–600bps depending on sponsor and asset.
The thesis is straightforward: buy a property today at a value-add price, execute a renovation or stabilization plan over 12–24 months, and refinance into permanent debt at a higher value supporting more leverage. The math works when the value uplift exceeds the cost of bridge interest plus refinance costs plus rate-cap premium plus opportunity cost of delayed cash flow.
The thesis fails when any of those costs run higher than expected, or when the refinance market shifts — both of which have happened repeatedly in 2022–2025.
The Three Exits Every Bridge Underwriting Tests
A defensible bridge underwriting tests three exits, not one. First, the agency-stabilized take-out: at the projected stabilized NOI, what does Fannie or Freddie quote? Run it at the actual rate environment, with the actual cap rate the lender will use, with the actual reserves they'll require. If agency clears at 65–70% LTV on stabilized value, the take-out is real.
Second, the bank-portfolio take-out: at the projected NOI, what does a balance-sheet bank quote at conventional terms? Bank deals usually require 1.30x+ DSCR at 70% LTV, less leverage than agency but a faster close and more flexibility on borrower credit. If only the bank deal pencils, you have a real exit but at lower proceeds.
Third, a sale at a stressed exit cap: if neither refinance closes, can you sell the asset at a 50–100bps wider exit cap and still return capital? This is the failsafe. Deals where the failsafe sale doesn't return capital are deals where the bridge is mandatory to refinance — and that is where bridge borrowers lose properties.
The Rate-Cap Trap
Most bridge loans require a borrower-paid rate cap to limit floating-rate exposure. The rate cap is essentially an interest-rate insurance policy — pay an upfront premium, get a strike price above which the cap pays the differential. Pre-2022, a 3-year rate cap on $20M of bridge debt with a 4% strike cost roughly $200K. By mid-2024, the same cap cost $700K–$1M. The market hasn't fully normalized.
On smaller deals, the rate-cap cost can exceed 6 months of debt service. We have seen $5M bridge loans where the cap cost $80K — that is real money on a $500K equity check. Underwriting a bridge without modeling current rate-cap pricing is the single most common error we see in operator pro formas.
The fix is simple: get a current rate-cap quote at LOI stage from at least two providers. Build the actual cost into your sources-and-uses. If the cap pushes IRR below your hurdle, the deal isn't a bridge deal anymore.
When Bridge Actually Makes Sense
Bridge fits three scenarios cleanly. First, value-add deals where physical occupancy at acquisition is below 80% — agency requires 90% physical occupancy for 90 days at agency takeout, and bridge bridges that gap. Second, ground-up or major-rehab deals where the asset isn't income-producing for 6+ months — no permanent lender will fund a non-stabilized asset.
Third, opportunistic acquisitions where the seller demands a 30-day close and there's no time for agency processing. The premium you pay for the speed is the bridge rate spread, but on an off-market deal at a meaningful discount to retail value, the math can work.
Bridge does not fit stabilized cash-flow deals where the only reason for bridge is higher leverage. The premium for the leverage almost always exceeds the return uplift, especially after rate-cap costs. If the deal pencils at agency, do agency.
Test the Three Exits Before You Sign Bridge →
Every Full report tests agency takeout, bank takeout, and a stressed-cap sale on the same deal. Know whether the bridge has one exit or three — with current rate-cap pricing modeled in — before you commit.
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