While 1-to-4-unit rental properties are underwritten using residential gross rent divided by monthly PITIA, 5-to-8-unit small multifamily buildings cross the legal threshold into commercial real estate. On a 5-to-8-unit DSCR loan, wholesale underwriters deduct vacancy allowances, property management fees, repairs, and owner-paid utilities from gross rent to calculate Net Operating Income (NOI), then divide NOI by annual debt service.
For investors scaling from duplexes and fourplexes into five-, six-, seven-, or eight-unit apartment buildings, understanding the underwriting line between four doors and five doors is critical. Many wholesale non-QM lenders offer specialized 5–8 unit (or 5–10 unit) small-balance multifamily DSCR programs that preserve the best features of residential DSCR debt—such as 30-year fixed terms and no personal tax returns—while applying commercial NOI math and a narrative commercial appraisal. Here is how the two programs compare side by side.
How Does DSCR Math Change When You Cross From 4 Units to 5 Units?
On a single-family home, duplex, triplex, or fourplex—which we cover in detail in our 2 to 4 unit multifamily DSCR underwriting guide—the DSCR equation is strictly Gross Monthly Rent divided by Monthly PITIA. The underwriter does not deduct a 5% vacancy factor, an 8% property management fee, or a $600/unit annual repair reserve.
Once you step up to a 5-to-8-unit building, the underwriter calculates DSCR using Net Operating Income (NOI) divided by Annual Debt Service (Principal & Interest):
- Gross Potential Rent (GPR): Sum of qualifying annual rents across all 5 to 8 units (lesser of in-place leases or appraiser market rent).
- Less Vacancy & Collection Loss: Underwriters apply a mandatory vacancy deduction (typically 5% to 10% of gross rent, or actual market vacancy if higher).
- Less Operating Expenses: Underwriters deduct real estate taxes, hazard insurance, common-area utilities/water/trash paid by the landlord, property management fees (typically underwritten at 5% to 8% of effective gross income even if you self-manage), and annual maintenance/replacement reserves (commonly $300 to $500 per unit per year).
- Resulting NOI Divided by P&I: The remaining Net Operating Income is divided by annual principal and interest payments. Most 5–8 unit wholesale matrices require a minimum 1.15 to 1.25 NOI DSCR.
| Underwriting Feature | 1–4 Unit Residential DSCR | 5–8 Unit Small Multifamily DSCR |
|---|---|---|
| DSCR Formula | Gross Monthly Rent ÷ Monthly PITIA | Net Operating Income (NOI) ÷ Annual P&I |
| Vacancy & Management Deducted? | No (100% of gross rent used in numerator) | Yes (5%–10% vacancy + 5%–8% management + repairs) |
| Minimum Required DSCR | Commonly 1.00 (down to 0.75 on select shelves) | Commonly 1.15 to 1.25 NOI DSCR |
| Maximum Purchase LTV | Typically 75% to 80% LTV | Typically 70% to 75% LTV |
| Maximum Cash-Out LTV | Typically 70% to 75% LTV | Typically 65% to 70% LTV |
| Appraisal Report Type | Fannie Mae Form 1004 (1-unit) or Form 1025 (2–4 unit) | Full Narrative Commercial Appraisal (Income + Sales Approach) |
| Typical Appraisal Fee & Turn Time | $550–$950 (7–12 business days) | $2,200–$3,800 (2–3 weeks) |
| Entity Vesting Required? | Optional on some shelves, LLC preferred | Mandatory LLC, Corp, or LP vesting on almost all shelves |
What Does a Worked 6-Unit NOI DSCR Calculation Look Like?
Let's run the exact numbers on a 6-unit brick apartment building in Cincinnati, Ohio, under contract for $680,000 at 75% LTV ($510,000 loan amount). Each of the six 2-bedroom apartments is leased at $1,250/month, generating $7,500/month or $90,000/year in Gross Potential Rent.
- Gross Potential Annual Rent: $90,000
- Less 5% Underwritten Vacancy Factor: -$4,500 (Effective Gross Income = $85,500)
- Less Real Estate Taxes & Insurance: -$11,400 ($7,800 taxes + $3,600 insurance)
- Less Landlord-Paid Water/Trash/Common Electric: -$4,200
- Less 6% Management Fee Allowance: -$5,130
- Less Maintenance & CapEx Reserve ($400 x 6 units): -$2,400
- Total Underwritten Net Operating Income (NOI): $62,370 / year ($5,197.50 / month)
Suppose the 30-year fixed monthly principal and interest payment on the $510,000 loan is $3,995/month ($47,940/year). Dividing the $62,370 NOI by $47,940 annual debt service produces a 1.30 NOI DSCR—comfortably clearing a 1.20 or 1.25 program minimum.
Why Self-Management Doesn't Change the Math: Even if you manage the 6-unit building yourself at zero out-of-pocket management cost, commercial DSCR underwriters still impute a 5% to 8% management fee because if the lender ever had to foreclose and step in, they would have to hire a third-party property manager.
Why Choose a 5-8 Unit Wholesale DSCR Loan Over a Local Bank Commercial Loan?
Traditionally, buying a 6-unit or 8-unit building meant going to a local community bank. While community banks can be great partners, their commercial real estate loans typically carry 5-year or 7-year balloon maturities, 20-to-25-year amortization schedules, global debt-service underwriting requiring two years of personal and corporate tax returns, and ongoing annual tax return covenants.
By contrast, a wholesale 5–8 unit DSCR program offers:
- True 30-Year Fixed Options (Plus 10-Year Interest-Only): Eliminate five-year maturity refinancing risk and stretch amortization over 360 months.
- No Personal Tax Returns or Global DTI: Underwritten strictly on the subject building's rent roll, operating statement, and the guarantor's credit score (commonly 660–700+ minimum FICO on 5–8 unit shelves; note that international buyers should check our foreign national DSCR guidelines for 5+ unit restrictions).
- Predictable Closing Timelines: Typically 25 to 35 days once the narrative commercial appraisal is ordered.
What Documents Should You Prepare Before Applying for a 5-8 Unit DSCR Loan?
Because a 5-to-8-unit transaction relies on commercial Net Operating Income verification, preparing a clean documentation package before ordering the narrative appraisal prevents underwriting delays and protects your rate lock:
- Current Certified Rent Roll: List every unit number, bedroom/bathroom count, square footage, tenant name, lease start and end dates, security deposit held, and current monthly contract rent.
- Executed Lease Agreements and 3 Months of Rent Receipts: For refinances or stabilized acquisitions, wholesale underwriters frequently verify that tenants are actually paying the contract rent stated on the rent roll and that no undisclosed rent concessions exist.
- Trailing 12-Month (T-12) Operating Expense Summary: Document actual annual bills for water, sewer, trash removal, common-area electric, snow removal or landscaping, property taxes, and hazard insurance so the appraiser does not overestimate expenses using generic regional averages.
If you are evaluating a 5-to-8-unit multifamily acquisition or refinance, check your eligibility to have a Loan Daddy loan specialist run a commercial NOI DSCR stress test and match your building to the right wholesale shelf.