The Quick Read: A lender using DSCR (debt service coverage ratio, which tests rent against the loan payment) reads a small apartment building as an income asset first, and the review changes character at five units, where the lender studies operating income after expenses, values the building on its income, and moves the file to a different loan structure.
- Two to four units usually fit residential-style DSCR programs. Five or more units go through the rental portfolio term loan in Lendmire’s network.
- The lender asks whether the income holds up after realistic expenses, not just whether the rent roll looks full.
- The appraisal shifts from sales comparisons toward the income approach, and the file needs more documents.
- You still skip traditional personal-income documentation and debt-to-income math, but you trade them for rent rolls, leases and operating statements.
- Clearing the coverage test is not the same as positive cash flow.
Key Terms Defined
Skim this first. The rest of the article leans on these words.
- PITIA: the full monthly housing obligation, meaning principal, interest, taxes, insurance and any association dues.
- NOI (net operating income): the building’s income minus operating costs like taxes, insurance, maintenance, management and vacancy, before any loan payment.
- Rent roll: a unit-by-unit list of who pays what, when each lease ends, and which units are empty.
- T-12: a trailing twelve-month operating statement showing what the building actually earned and spent.
- Blanket loan: one note secured by several rentals. Here, “portfolio DSCR loan,” “blanket loan” and “cross-collateralized loan” all name that same thing. (A bank’s “portfolio loan,” meaning a loan the bank keeps on its own books, is a different use of the word.)
- Recourse: the borrower or guarantor is personally on the hook. A non-recourse loan looks to the real estate, with personal liability limited to carve-outs such as fraud and bankruptcy.
- Yield maintenance: a prepayment charge that compensates the lender if you pay off a fixed-rate loan early.
Why Does Five Units Change Everything?
Five units is a market convention, not a physical difference. A fourplex and a five-unit building can look identical from the street. The lending world still sorts them into different boxes.
Loans on one to four units are treated like residential loans. Five or more units get treated as commercial-style income property. An appraiser’s overview from Appraisals Unlimited makes the same split: one to four units on residential forms, and at five-plus a commercial approach where income comes first.
Here is the practical result. Many DSCR programs stop at four units because their loans are built for the residential market. A five- to eight-unit building falls in the gap. It is too big for the standard grid and too small for institutional lenders. Across our wholesale network, those buildings are handled through the rental portfolio term loan: five or more rental properties or units under one loan, with a balloon at maturity.
That structure keeps the property-based approach. Qualification runs primarily on the building’s rental income covering the debt, subject to lender guidelines. What it adds is commercial-style scrutiny of how the building really operates.
Which Loan Structure Fits Which Building?
Unit count picks the structure. The structure then drives the income test, the appraisal and the paperwork.
| Factor | 2–4 units | 5+ units |
|---|---|---|
| Typical structure | Single-property or 30-year portfolio loan | Rental portfolio term loan |
| Income test | Rent against PITIA | Operating income against debt service |
| Appraisal | Residential income report | Income-approach report |
| Documents | Leases, rent schedule | Rent roll, leases, T-12 |
| Review depth | Property-level | Building and operations |
A few program facts help here. The 30-year portfolio DSCR loan covers two to 20 properties under one note, including 2–4 unit buildings, with leverage up to 80% of value on a purchase or rate-and-term refinance. The rental portfolio term loan runs up to 75% of value, with loan sizes from $500,000 up to $50,000,000 and larger balances on review. Terms come in 3, 5, 7 and 10 years with a balloon at maturity. Everything here is a ceiling or floor, subject to lender guidelines, never a quote.
Reserves on the term loan are held for taxes, insurance and capital expenditures. Properties in several markets can sit under one loan. That is a real advantage when your buildings are not all in one place.
How Underwriting Works, Step by Step
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. Within that frame, a small apartment file moves through six checks.
1. The eligibility gate. The lender confirms unit count and whether the building is a stabilized rental. Stabilized means leased and operating, not half empty. Owner-occupied property, co-ops and commercial property fall outside the pool.
2. The coverage math. On one to four units, the common test divides rent by the monthly PITIA. At five-plus units, many lenders switch to NOI over annual debt service. Some small-balance programs keep the simple rent-over-payment math above four units. This is the single detail to confirm before you commit. A calculator-and-education site, Vouchermatch’s small multifamily underwriting playbook, makes the same point: at five to ten units, expenses, vacancy, repairs and management start to matter. It also notes that some lenders fold a replacement reserve into NOI and some do not.
3. Operating history. Expect a rent roll and every lease. On NOI-based files, expect a T-12 and year-to-date figures too. The statements replace your traditional personal-income documentation as the proof.
4. The appraisal. More on this in the next section.
5. The borrower. Credit, liquidity and leverage all still count. The credit floor on the portfolio programs is 640, and some structures ask for 680 or 720. Many structures want a special-purpose entity, usually an LLC. Recourse loans carry a personal guarantee.
6. The outcome. The result rests on five things: NOI after realistic expenses, how much of the building is leased, the appraised value, the loan amount against that value, and your credit and reserves.
For the broader mechanics, see Lendmire’s complete DSCR loans guide.
What Changes in the Appraisal?
The appraisal method changes along with the unit count. For two to four units, Fannie Mae’s Selling Guide names Form 1025 as the standard report. DSCR loans are not agency products, so those rules do not govern them. The forms simply show where the industry draws the line. Form 1025 stops at four units.
Above four units, expect a commercial-style narrative or income-approach report. Pricing and available terms vary by lender, borrower profile, property type, and full underwriting review. Cap rate is the building’s NOI divided by its value, so it translates income into a price.
Why does this matter to you? A sales comparison asks what the neighbor’s building sold for. The income approach asks what the building earns. If your rents sit below the market or your expenses run high, the value can come in lower than a comparable-sales instinct would suggest. Plan for a costlier appraisal and more document requests.
Run the Numbers: A Hypothetical Six-Unit
This is a modeled example, not a market fact. Say you are buying a six-unit building and the seller’s pro forma shows coverage near 1.35x. A lender rebuilds that number in four moves:
- Vacancy. The seller assumes every unit is full all year. The lender adds a vacancy allowance, which lowers income.
- Management. You plan to self-manage. Many lenders still include a management cost, because the next owner might not.
- Repairs and reserves. The seller shows light maintenance. The lender uses a more realistic repair figure and may add a replacement reserve.
- Taxes. If the purchase price resets the tax bill, the lender uses the higher number.
After those adjustments, the same building might land around 1.10x. Same rents, same building. A different answer.
Now the leverage cap binds. If the appraisal comes in lower on the income approach, the loan size follows the lower value, up to 75% of it on the term loan. Strong coverage and low appraised value do not fix each other. The strongest files clear both tests: enough equity and enough rental coverage.
One more point, and a common trap: clearing 1.00 is not positive cash flow. The ratio measures rent against the debt payment. Repairs, utilities and capital projects can still leave you short.
How Does the Lender Read the Rent Roll?
The rent roll tells the lender whether the income is real.
- Tenants who are related to the seller or owner.
- A cluster of leases ending in the same month.
- Big rent gaps between near-identical units with no explanation; “Other income” (laundry, parking, fees) that no statement supports.
Every unit needs a lease or an appraiser-supported market rent. Verbal agreements do not count.
Small buildings have a built-in weakness. One empty unit in a six-unit building removes about one-sixth of the rent roll. In a 40-unit building, one vacancy is closer to 2.5%. That is why lenders look harder at a six-unit than its price would suggest, and why a thin cushion is risky here.
What About the Building Itself?
The lender reads the physical building because it protects the income. A roof near the end of its life, old electrical, aging boilers and unresolved life-safety items all raise the odds of unplanned spending. The appraisal and property review surface these.
Unit mix matters too. A building of similar units is easier to value than one with odd layouts. And condition shapes the structure. Stabilized, leased buildings fit best. Heavy rehab or lease-up usually points to bridge or other short-term financing, a point that Multifamily-USA’s explainer on multifamily requirements makes about stabilized buildings generally.
Borrower experience gets weighed too, though it rarely sinks a strong file on its own. Lenders want to see liquidity after closing, a management plan that fits the building, and credit within the program’s range. Stronger experience may help the file. It is reviewed alongside everything else, subject to lender guidelines.
Where the Rule Breaks
Here are the named edge cases.
Same building, different answer. A six-unit may be accepted by one lender and refused by another. The difference is often whether the program extends past four units, or whether it switches to NOI math at five.
Mixed-use. Retail or office plus apartments is a gray zone. Inside the portfolio structures, mixed-use property is not eligible. On a single-property file, the answer depends on the program and how much of the building is residential.
The “fake” five-unit. Two separate small buildings do not generally combine into one five-plus unit property for financing purposes.
Condo or PUD buildings. A two-to-four unit condo or planned development needs a project addendum on Fannie Mae’s Form 1025.
Commercial alternative. A true commercial loan generally means full documentation, a shorter term and a balloon. The term loan has a balloon too, but the file is still built around the property’s income.
Manufactured homes. Manufactured and mobile homes are not reviewable on any of these programs.
What If You Own More Than One Building?
This is where the portfolio structure earns its name. If you hold several small buildings, or a mix of rentals and a small apartment building, one note can secure the group. Coverage is measured on the pooled rents and debt service. Stronger properties can offset weaker ones.
So a rental below 1.00 coverage can sit in the pool, and underwriting tests the pooled coverage, the leverage and the terms. The remaining portfolio must always cover its debt service.
Other mechanics to know:
- Partial releases. Selling one property out of the pool follows the loan documents and the lender’s release terms. The release price runs above the property’s allocated balance.
- Prepayment. The term loan uses yield maintenance, so early payoff has a cost. Ask for the schedule before you sign.
- Recourse. Non-recourse structures exist on the term loan, with carve-outs. Others carry a personal guarantee.
- Assumption. A one-time purchaser assumption is available on loans above $5,000,000, subject to underwriting and an assumption fee. Below that, it is on an exception basis.
- Cash-out. On a portfolio loan, cash-out never exceeds 75% of the pooled value. Inside the first six months of ownership, the loan is also capped at 90% of total cost (purchase price plus documented improvements), and at 100% of total cost from six to twelve months. The leverage ceiling still applies, so the loan is the lower of the two. After twelve months the appraised value alone is the basis. A rate-and-term refinance is not subject to the cost-basis cap.
A bank’s own balance-sheet loan works differently.
What Happens When the Numbers Are Thin?
Thin coverage does not end the conversation. It changes the terms. Here is what usually moves:
- Lower leverage, meaning more equity from you.
- Larger reserves.
- A stronger credit profile.
- A longer, better-documented lease history.
- A pool structure, if stronger properties can carry the weaker one.
A separate select-lender path exists for single properties with coverage below 1.00, with leverage and terms adjusted. It is not the portfolio structure, and it does not apply to five-plus unit buildings. Everything remains subject to lender guidelines, credit approval and property review.
Pre-Application Self-Test
Before you ask for terms, run this check:
1. Confirm the unit count and that the building is stabilized.
2. Build your own NOI with realistic vacancy, management, repairs and utilities.
3. Gather the rent roll, every lease and a T-12.
4. Ask the lender whether coverage uses lease rent, appraisal rent, or the lower of the two.
5. Confirm the coverage formula for that specific program.
6. Plan reserves and entity setup.
7. Accept that the loan may be recourse to you.
If the building only works on gross rent, expect it to fail once expenses come in. Better to learn that on your own spreadsheet.
When a DSCR Loan Is the Wrong Tool
Some deals do not fit. Skip this route when:
- The building needs heavy rehab or is mostly vacant. That points to bridge financing first.
- The property is mixed-use with a large commercial share.
- You want maximum leverage with minimal reserves. The leverage caps and reserve rules will bind.
- You cannot accept a balloon or prepayment cost.
Not every building belongs on this track. (And that is fine. A good broker tells you.)
Frequently Asked Questions
Do DSCR loans stop at four units?
Many do, because the programs are built around the residential market. In Lendmire’s network, buildings of five or more units are handled through the rental portfolio term loan instead.
Is the ratio always rent divided by payment?
No. On one to four units it often is. On larger buildings, many lenders use net operating income over annual debt service, which subtracts operating expenses first. Confirm the formula before you choose a program.
Do I need traditional personal-income documentation or financial documents?
You skip traditional income documentation and debt-to-income math. A larger building still needs property documents: a rent roll, leases and often a T-12. The building’s financials stand in for your personal income documents. Tax treatment can depend on how the property is held; investors should keep clear records and speak with a qualified tax professional before relying on any deduction.
Can I refinance or take cash out on a small apartment building?
Yes, subject to program rules. Cash-out on a portfolio loan never exceeds 75% of the pooled value, and recently acquired properties face a cost-basis cap that sits under that ceiling.
What is a common mistake investors make on a six- or eight-unit deal?
Underwriting on the seller’s pro forma. Rebuild the income with realistic expenses before you commit. A building that barely clears coverage on gross rent can miss once costs come out.
Next Step
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. Lendmire is a broker that arranges financing through select lenders in its wholesale network across 41 markets, including Washington, D.C. Programs change. This is not a commitment to lend.
About Lendmire
A non-QM mortgage broker (NMLS# 2371349), Lendmire arranges DSCR financing for real estate investors in 41 markets — 40 states plus Washington, D.C. Because deals are underwritten primarily on property cash flow rather than personal income documentation, the structure suits self-employed buyers and entity-owned portfolios. Lendmire places loans through wholesale investor lenders; it is not a direct lender. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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References
1. Appraisals Unlimited, small multifamily appraisals
2. Vouchermatch, small multifamily underwriting playbook
4. Multifamily-USA, multifamily loan requirements
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 Portfolio DSCR Lender Counts Three Houses and a Fourplex · How a DSCR Lender Sizes an LLC Portfolio Loan Without a Guarantor · Portfolio DSCR Loan vs. a DSCR Loan on Every Rental
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
Required disclosures. Lendmire (NMLS# 2371349) operates as a licensed mortgage broker, not a direct lender or depository. The discussion in this article is general in nature and should not be relied upon as financial, legal, or tax advice — every investment scenario is unique and should be reviewed by a qualified professional. Any loan inquiry is subject to lender underwriting, and this article is not a commitment to lend or a guarantee of approval. Mortgage rates, loan terms, and program guidelines vary by borrower, property, and state, and may change without notice. Equal Housing Opportunity. Verify licensure at NMLS Consumer Access.