The Quick Read: A five-unit building sits on the commercial side of the financing line, so the coverage test shifts from rent over payment to net operating income over debt service, and the appraisal, documents, and lender pool shift with it. Lendmire arranges these refinances through select lenders in its wholesale network, and eligibility is subject to lender guidelines.
- Four units is the residential ceiling. Five units moves the file into commercial multifamily underwriting.
- Coverage at five units is usually net operating income divided by annual debt service, not rent divided by payment.
- The appraisal runs on the income approach, so the operating statement drives value.
- Clean documents (rent roll, trailing twelve-month statement, payoff letter) prevent most delays in review.
- Cash-out on standard rental collateral tops out around 75% LTV across most of the network.
What Actually Changes at Five Units
The line between residential and commercial lending falls between four and five units. BiggerPockets explains that a fourplex can take a residential mortgage, while a building over four units is treated as commercial. A fifth legal unit, even a converted basement unit, changes the category.
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That one unit changes four things on the file.
| Factor | 1–4 units | Five units |
|---|---|---|
| Coverage test | Rent vs. payment | NOI vs. debt service |
| Appraisal | Rent-schedule forms | Commercial, income approach |
| Core documents | Leases, rent schedule | Rent roll, T-12 statement |
| Lender pool | Wide | Narrower, select lenders |
On the appraisal side, the Fannie Mae Selling Guide names Form 1025 for two- to four-unit properties. That is only a form reference. DSCR loans are not agency products. The point is that the standard small-income report stops at four units.
Don’t assume a regular 1–4 unit DSCR loan will stretch to five. It usually won’t. Some lenders in the network do review five-unit buildings, but through a narrower channel with different paperwork. Start there.
Key Terms Defined
NOI (net operating income): Collected rent plus other income, minus vacancy and operating expenses, before any debt payment.
Debt service: The annual principal and interest owed on the new loan.
T-12: The trailing twelve-month operating statement showing what the building actually collected and spent.
Rent roll: A unit-by-unit schedule of tenants, rents, lease dates, and deposits.
Debt yield: NOI divided by the loan amount. Some commercial lenders use it to cap loan size.
Seasoning: The time you have held title before a lender will treat a cash-out as a refinance rather than a purchase. About 6 months is the common expectation.
Same Word, Two Calculations
Here is why the search results contradict each other. “DSCR” means two different tests.
On a one-to-four unit investor loan, the test is monthly rent divided by the full monthly obligation: principal, interest, taxes, insurance, and any HOA dues. It is a rent-versus-payment screen. Select programs in the network start at 1.00 on that screen, and stronger ratios open better pricing and leverage.
On commercial multifamily, Adventures in CRE defines the ratio as net operating income divided by annual debt service, usually quoted as a multiple. NOI already carries vacancy, taxes, insurance, repairs, utilities, and management. So the same building can look much weaker on the commercial test than on a rent-over-payment screen.
Clearing 1.00 does not mean the building cash flows. The ratio leaves out capex, and on the rent-based version it leaves out vacancy and repairs too. Treat it as a lender test, not a profit forecast.
How Underwriting Treats the File, Step by Step
This is the order a five-unit refinance usually follows.
1. Count legal units. Only permitted, documented units count. An informal unit adds rent on paper and zero on the lender’s sheet.
2. Build the income file. Pull the rent roll and the T-12. Annualize the rent roll and compare it to T-12 collections. Investor underwriting guides such as Wheelbarrow Profits flag a gap past roughly 5% as a sign of vacancy, concessions, bad debt, or a stale roll. Reviewers look for the same gap.
3. Rebuild NOI. The lender starts with gross potential rent, subtracts vacancy and credit loss, adds other income, then subtracts real operating costs. Self-managed buildings often get a market-rate management expense added back in. The owner’s pro forma is not the number.
4. Test coverage. NOI is divided by annual debt service on the new loan. If the result falls short, the loan size shrinks or the structure changes.
5. Appraise on income. A commercial appraiser values the building as NOI divided by a market cap rate. AppraiserPoint notes that five-plus-unit properties use commercial forms, lean on the income approach, and often need a Certified General appraiser.
6. Find the binding constraint. Value, coverage, and sometimes debt yield each cap the loan. The lowest of them sets the amount. Lendmire’s piece Does a DSCR Lender Test Debt Yield on a Five-to-Eight-Unit Building? covers that side test in detail.
7. Pay off the old loan. The new loan retires the existing one. The payoff letter, any prepayment charge, and the old loan’s maturity all feed the final numbers.
A Worked Example
Picture a stabilized five-unit building with all five units leased. On a rent-over-payment screen, collected rent covers the full monthly obligation at about 1.25x. That looks comfortable.
Now rebuild it as a commercial file. Subtract a vacancy allowance. Subtract taxes, insurance, repairs, utilities, and a management expense. NOI drops, and the coverage on annual debt service lands near 1.05x on the same loan. Same building. Same debt. A 0.20x swing, all from expenses the first screen never saw.
That swing is the whole story at five units. If the NOI-based number lands below what a lender wants, the options are a smaller loan, more cash in, a longer amortization where a select lender offers one, or waiting until expenses and collections improve. Coverage below 1.00 is available through select lenders in the network, with leverage and terms adjusted. It is a different path, not a looser version of the same one.
(This example is illustrative. It uses ratios, not sourced market figures.)
Structures and Variations
The network’s program spine is the 30-year fixed. Extended terms, interest-only periods, and ARM structures exist through select lenders for investors who want them.
On leverage, a cash-out refinance on a standard rental tops out around 75% LTV across most of the network, with about 6 months of seasoning as the common expectation. Rate-and-term refinances can reach higher ceilings on strong files. Credit floors start at 620 in parts of the network, most programs want around 660, and 700+ unlocks the strongest leverage tiers. Standard loan sizes run up to $3,000,000, and above $2,500,000 the network generally holds to 30-year fixed structures.
Reserves vary by lender, leverage, loan size, and transaction type. Roughly 6 months of PITIA is common. Loans above $1,500,000 typically step up to about 9 months. Reserves documentation matters here: statements must show the funds are yours and seasoned.
A larger equity cushion lowers the payment and can lift coverage. It does not erase credit floors, reserve rules, or property eligibility. The strongest files clear both tests: enough equity and enough income. Lendmire’s investor cash-out refinance requirements on a 5+ unit building piece walks through that side in more depth.
For program basics beyond this topic, the complete DSCR loans guide covers the full picture.
DSCR vs. conventional financing
There are two common ways to finance an investment property, and they qualify you differently — here’s how investors weigh them.
Why investors choose it
- Qualifies on the property’s rental income — no personal tax returns, W-2s, or pay stubs needed to document income.
- No personal debt-to-income ceiling to clear, so existing mortgages and obligations don’t cap your borrowing the same way.
- Can be closed in an LLC, keeping the property inside a business entity.
- Built for scaling — not held to the limit on number of financed properties that conventional financing applies.
- Underwriting centers on the deal: generally qualifies when the rent covers the payment, a 1.00x coverage ratio being a common baseline (confirmed in underwriting).
- Designed specifically for investment property, including long-term and, where the program allows, short-term rentals.
Where it’s strong
- Often the lowest ongoing financing cost for a buyer who fully qualifies on personal income — a fit for a first property or a cost-first purchase.
Trade-offs for investors
- Requires full personal income documentation and must fit within a debt-to-income limit — salary, existing debts, and other mortgages all count.
- Typically held in your personal name rather than a business entity.
- Caps how many financed properties you can carry, which can become a ceiling as a portfolio grows.
- Evaluates you as a borrower as much as the property, which usually means more paperwork.
How investors usually choose: a first or single property often optimizes for the lowest financing cost; portfolio builders often optimize for leverage, vesting in an LLC, and scaling past conventional caps. The right answer depends on your goals, the property, and current guidelines — both paths run through select lenders in Lendmire’s wholesale network, with eligibility and terms confirmed in underwriting.
Where the General Rule Breaks
Mixed-use buildings. A storefront on the ground floor changes eligibility. Lenders look at how much of the building is commercial and how solid those leases are. Some programs limit commercial space tightly.
Government-insured debt. The HUD 223(f) program insures refinances of existing multifamily rental housing under 24 CFR part 207, per the Federal Register. It involves third-party reports, escrows, and compliance work that make it a poor fit for a very small building. It is a different lane from DSCR-style financing.
Informal or unpermitted units. If it isn’t legal and documented, it doesn’t count.
Vacant or value-add buildings. The T-12 won’t support coverage on a half-empty building. Those usually need bridge financing first, then a refinance once the building stabilizes. That is a separate product.
Small-balance mismatch. Five-to-eight-unit buildings can be too small for large commercial lenders and too big for standard residential DSCR programs. Fewer lenders compete for them, so lender selection matters more than on a fourplex.
Unit-count games. Some owners cap a building at four units to stay residential. That can leave income on the table, since commercial value follows NOI.
Not offered anywhere in the network: DSCR loans on manufactured homes, log homes, and barndominiums.
The Document File That Keeps Reviews Clean
Most preventable friction on a five-unit file comes from paperwork that doesn’t reconcile. Gather these before the file goes in:
- Current rent roll, dated recently, listing every unit
- Executed leases and any concession letters
- T-12 operating statement
- Bank statements that match reported collections
- Payoff letter for the existing loan
- Insurance declarations and tax bills
- Entity documents if the building is held in an LLC, subject to lender program eligibility
- Reserves documentation
Reconcile the rent roll to the T-12 and the bank deposits before the lender does. A mismatch you explain up front reads as a detail. A mismatch the reviewer finds reads as a problem.
What the Decision Looks Like in Practice
Start with the goal. A rate-and-term refinance for a maturing loan runs a different file than a cash-out for the next purchase. Then test the building honestly: rebuild NOI the way a lender would, not the way a pro forma would.
If the NOI-based coverage clears and the documents reconcile, the deal works to a lender in the network that handles five-unit buildings. If it comes in short, decide whether to trim the loan, add cash, restructure, or hold and raise collections first. Because the building is valued on NOI, expense control and collections lift both value and borrowing power.
DSCR loans are designed for non-owner-occupied investment properties. Because they are business-purpose investor loans, they are reviewed differently from a standard owner-occupied mortgage. Tax treatment varies; consult a qualified professional.
If you are buying or refinancing a rental property and want to see how the numbers work, Lendmire can help you compare DSCR loan options based on the property income, credit profile, leverage, and investor goals. The illustrative calculator on the site gives a rough estimate only.
Frequently Asked Questions
Can a five-unit building use a DSCR loan?
Sometimes. Standard programs target one to four units, but select lenders in the network review five-unit buildings under a different, income-based test. Eligibility depends on the property, the borrower, and current lender guidelines.
Is DSCR the same on a five-unit building as on a fourplex?
No. A fourplex is usually tested on rent over payment. A five-unit building is usually tested on NOI over annual debt service, which already includes vacancy and operating costs. The same building often scores lower on the second test.
Can I take cash out on a five-unit refinance?
Often, yes. Cash-out on standard rental collateral tops out around 75% LTV across most of the network, with about 6 months of seasoning as the common expectation. Final proceeds depend on value, coverage, and reserves.
What happens if the lender’s number comes in lower than expected?
The loan amount shrinks or the structure changes. Common fixes are a smaller loan, more cash at closing, a different term structure, or waiting until NOI improves. Coverage below 1.00 is available through select lenders, with leverage and terms adjusted.
Does a commercial appraisal take longer or cost more?
It is a different report. Commercial appraisals use the income approach and are generally longer and more costly than small-residential reports, according to AppraiserPoint.
About Lendmire
Lendmire (NMLS# 2371349) is a mortgage brokerage built around DSCR investor lending, with programs available in 41 markets, including Washington, D.C. DSCR lenders commonly evaluate rental-income coverage instead of personal income paperwork — a practical fit for LLC-owned and multi-property investors. Terms vary by lender, property, leverage, and program. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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References
1. BiggerPockets: Investing in a Fourplex
2. Fannie Mae Selling Guide B4-1.2-01
3. Adventures in CRE: Debt Service Coverage Ratio
4. Wheelbarrow Profits: How to Underwrite a Multifamily Deal
5. AppraiserPoint: Multi-Family Appraisal
6. Federal Register: HUD 223(f) rule
This article is part of Lendmire’s DSCR loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How a DSCR Refinance Works on a First Rental You Already Own · DSCR Refinance vs Portfolio Loan for a Landlord Losing a Lender · How to Refinance a Newly Bought Rental Into a DSCR Loan
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
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Compliance and disclosures. Lendmire (NMLS# 2371349) is a licensed mortgage broker and is not a direct lender, depository institution, financial advisor, or tax professional. Content in this article is general market analysis and educational information — not financial, legal, or tax advice for any specific situation. Lendmire does not guarantee loan approval; every transaction is subject to underwriting by the funding lender. Mortgage pricing and loan program guidelines are subject to change at any time without notice and vary by borrower characteristics, property type, and state regulations. Lendmire complies with Equal Housing Opportunity. Licensure verification: NMLS Consumer Access.