DSCR Loans for 5+ Unit Multifamily: Why the Underwriting Looks Nothing Like a 1-4 Unit Rental Loan

A 12-unit apartment building and a single-family rental can both carry a DSCR loan, and a lot of investors assume the underwriting is the same deal at a bigger scale. It isn’t. Cross five units and the file moves into a different program tier entirely: lower maximum leverage, a higher credit floor, a narrower loan-amount band, and an appraisal method that doesn’t look at comps at all. None of that is negotiable by having stronger cash flow.

Here’s what actually changes, and the arithmetic that shows why a building that comfortably covers its debt service still can’t borrow the same way a four-unit property does.

Two Programs, Not One Program at a Bigger Size

DSCR rental financing for 1-4 units and DSCR financing for 5+ unit multifamily are structured as separate programs with separate limits, even though both qualify the loan off the property’s own rental income rather than the borrower’s personal income.

The gap isn’t arbitrary. Once a property crosses into five-plus units, it stops being appraised as residential real estate and gets appraised as commercial multifamily — income-approach valuation built on the actual rent roll and operating expenses, not comparable single-family sales. That’s the same line Fannie Mae and Freddie Mac draw between their single-family and multifamily businesses, and it’s why a lender treats the file differently the moment the unit count changes, regardless of how the building performs.

The Arithmetic: Strong Cash Flow Doesn’t Buy You More Leverage

Take a 12-unit building valued at $1,200,000. Gross rents run $14,000 a month, or $168,000 a year. After operating expenses at 35% of gross — a reasonable assumption for a stabilized multifamily property — net operating income comes to $109,200.

At 75% LTV, the loan is $900,000. At an indicative starting rate near 6.25% on a 30-year amortization, principal and interest run roughly $5,540 a month, or about $66,500 a year. Divide NOI by that debt service and the deal is covering its payment at roughly 1.64x — a comfortable cushion well above what most DSCR underwriting requires.

Now run the hypothetical a lot of borrowers ask about: what if the lender stretched this to 80% LTV, the way a 1-4 unit DSCR file could? The loan becomes $960,000, debt service rises to about $70,950 a year, and DSCR drops to roughly 1.54x — still well above 1.0. The deal could carry more debt. The program still caps it at 75%. That’s the point: at the 5+ unit tier, the ceiling is set by the program bucket the property falls into, not by how well the income statement performs that month.

Why the Credit Floor Jumps Too

The 700 FICO minimum on multifamily isn’t about the borrower being a worse credit risk at scale — it’s about loss severity. A single-family rental that goes sideways is one vacant unit; a 12-unit building that goes sideways is a commercial asset with a much larger balance and a thinner buyer pool if it has to be sold in a hurry. Underwriting prices for that tail risk with a higher credit bar up front, the same way it caps leverage five points lower than the 1-4 unit program.

Where This Shows Up Wrong in Practice

The mistake we see most often is an investor pricing a 5-6 unit deal using the 1-4 unit rate sheet and LTV cap, then being surprised when the actual term sheet comes back five points lower on leverage and with a tighter credit requirement. The unit count on the appraisal, not the purchase contract or the listing description, is what triggers the switch — a legal fourplex with an unpermitted fifth unit can get kicked into the multifamily bucket the moment an appraiser counts it.

When This Is the Wrong Call

The multifamily DSCR program isn’t the right tool in every situation. Three cases where it isn’t:

• The property is four units or fewer. Run it through the 1-4 unit DSCR program instead — more leverage and a lower credit floor for the same style of loan.
• Credit sits below 700, or the loan amount falls outside the $400,000-$2,000,000 band. The program likely isn’t a fit this cycle; a bridge-to-DSCR structure or a different program may fit the deal better.
• The building needs real repositioning before it stabilizes — vacant units, deferred maintenance, below-market rents not yet brought up. DSCR underwriting on trailing income won’t reflect the deal being bought; a bridge loan sized to the business plan, refinanced into DSCR once stabilized, is the more usual sequence.

These figures are indicative and move with market conditions and the specific deal — confirm current terms at /rates/ before underwriting a purchase around them. This is a referral service connecting investors with lending sources for business-purpose loans on non-owner-occupied investment property; it is not a lender, and terms here aren’t an offer of credit.

See the full structure on the DSCR program page and the multifamily and mixed-use bridge page if the property needs repositioning first, or start the file directly at /apply/.