The Quick Read: A DSCR lender counts only legal, separately leasable dwelling units, confirms that count against the appraisal and the rent roll, and then applies a coverage test that can change once the building reaches five doors. Which test applies, and whether the building is eligible at all, depends on the program and the lender, so confirm the unit cap in writing before you pay for an appraisal.
- The count is legal, not marketed. A door only counts if it is a permitted, separately leased dwelling.
- Five units is a category line. Many residential-style programs stop at four units, and the fifth door narrows the lender pool.
- The test can change. Smaller buildings usually use rent over the full monthly payment. Larger ones often lean on net operating income.
- Clearing the ratio is not cash flow. DSCR compares rent to PITIA only (principal, interest, taxes, insurance, and any association dues).
- Programs differ. Treat every figure here as typical, subject to lender guidelines.
What does a lender mean by a “unit”?
A unit is a dwelling that can be legally occupied and leased on its own. It has its own living, sleeping, cooking, and bathroom space. It is permitted as a dwelling, and it produces its own lease or a supportable market rent. Marketing copy and tax-record labels do not make a unit.
DSCR Calculator
Run the numbers in your market
Rate source: Freddie Mac 30-yr average via FRED® — Federal Reserve Bank of St. Louis · effective Oct 29, 2026
Prefilled with starting assumptions — enter your own rent or nightly figures, taxes, insurance, and HOA for a more accurate picture.
Program parameters update from Lendmire’s centralized guideline source. Taxes and insurance are editable estimates.
As of Oct 29, 2026 · General Freddie Mac market benchmark, not a Lendmire loan offer. Rent, nightly rate, occupancy, taxes, and insurance are editable estimates. Short-term rental figures are estimates only and vary significantly by season, property type, management approach, and local short-term-rental rules — confirm local regulations before relying on them. Qualifying income for short-term rentals varies by program — some use appraisal market rent, others use documented STR history or projections — and is confirmed in underwriting. Not a Loan Estimate, approval, or commitment to lend. Program availability and eligibility are subject to lender guidelines, credit approval, property review, and underwriting.
Across the wholesale network of DSCR lenders, the count gets checked three ways. The appraiser counts doors on site. The lender compares that against the rent roll, which is the unit-by-unit list of tenants, leases, and rents. Zoning and permit records come in as a third check. When the three agree, the deal works forward. When they disagree, the lowest defensible count usually wins.
Here is how common unit types are typically treated. Treatment is lender-specific, so read this as a map, not a rulebook.
| Unit type | Typical treatment |
|---|---|
| Standard permitted apartment | Counts as a unit |
| Basement or ADU, permitted and separately leased | Generally counts |
| Unpermitted or informal conversion | Often excluded, and a risk to the file |
| Owner-occupied or manager’s unit | Reviewed case by case |
| Storefront or commercial space | May make the building mixed-use |
Why the fifth unit changes the category
The fifth unit moves the building out of the residential lane and into commercial-style lending. Four units and under are treated as residential. Five and up are underwritten on the building’s financials. That shift is why a five-plex is a different file from a fourplex, even when the buildings look alike from the street.
The appraisal forms show the same split. A standard small-income appraisal form is built for two- to four-unit properties, and the Selling Guide assigns it to that range. One appraiser’s practice page says the form is not for apartment properties with more than four units. DSCR loans are not agency products, so treat these forms only as a reference point. A five-unit building simply needs a different appraisal product.
Here is the four-versus-five comparison in one place.
| Factor | 1-4 units | 5+ units |
|---|---|---|
| Lane | Residential-style investor loan | Commercial-style underwriting |
| Income test | Rent over PITIA | Often net operating income |
| Appraisal | Small-income report | Income-approach report |
| Documents | Leases or rent schedule | Rent roll and operating statements |
| Lender pool | Wider | Narrower |
Many DSCR lenders stop at four units. Some extend to eight or more, and a few set no stated cap. Lendmire’s piece How a DSCR Lender Counts a Five-Unit Building and a Duplex covers the smaller-building side of that comparison.
How does the lender verify the count?
The lender verifies the count by reconciling four records: the appraiser’s site observation, the rent roll, the leases, and the public permit and zoning record. Any mismatch gets resolved before underwriting continues. The borrower usually does the resolving, because the borrower has access to the seller.
The mismatches come up again and again:
- The seller’s listing says five units, and the permits show four.
- The tax record shows four units, and a fifth was added without a permit.
- The rent roll lists five tenants, and one is a roommate renting a room inside a unit.
- A unit is marketed as a one-bedroom but has no kitchen.
When the lender’s count lands lower than the listing, the options are limited. You can document the extra unit as legal, restructure the deal around the lower count, or move to a lender whose program fits the building as it stands. Ask for the legal unit documentation before you make an offer, not after.
How rent gets counted, unit by unit
Rent is built door by door, then added up. For each unit, the lender wants either a lease or an appraiser’s opinion of market rent. The appraiser reconciles indicated rents to reach a market rent opinion for each unit. The unit-level figures then roll into one operating income statement.
Programs differ on the details, but this is the common pattern:
| Unit situation | Typical treatment |
|---|---|
| Leased at market | Lease rent counts |
| Leased above market | Often capped at market rent |
| Leased below market | Lease rent usually governs |
| Vacant | Market rent, excluded, or limited, by program |
| Month-to-month | Often supported with market rent |
The lower of the lease or market rent is the conservative way to count. Many lenders work that way. Some programs credit a vacant unit at market rent because the appraisal supports it, and others exclude it. You will not know until you ask. Lease terms, occupancy, and stabilization all feed the decision.
Worked example: a five-unit building, two ways
Run the numbers on a hypothetical building. Every figure below is a modeled assumption, not market data. Assume five similar units, all at market rent, and a gross-rent coverage of about 1.30x. That means total rent is about 1.30 times the full monthly payment.
Method one, rent over PITIA. With all five units leased, coverage sits near 1.30x. That clears 1.00x, the point where select programs start.
One unit goes vacant. If the lender credits no rent on that unit, the building keeps four-fifths of its income. Coverage falls to roughly 1.04x. The building still clears 1.00x, but the cushion is nearly gone.
Method two, net operating income over debt service. Now assume operating costs and a vacancy allowance absorb about a third of gross rent. Net operating income is then about two-thirds of gross, and the same fully leased building tests near 0.87x. The building did not change. The test did.
Two lessons follow from that example:
1. A vacant door weighs less in a bigger building. In a fourplex, each unit carries a quarter of the income. In a five-plex, each carries a fifth. One vacancy hurts, but it hurts less.
2. The method matters more than the arithmetic. Expenses sit inside the ratio on the second test. Check which method your lender uses before you assume the building clears.
If a five-unit building tests below 1.00x, there are paths a lender may review. A larger down payment lowers the balance and can lift the ratio. Coverage below 1.00x is also available through select lenders in the network, with leverage and terms adjusted. Neither path is a promise. Approval stays subject to lender guidelines, credit review, and the property itself.
Where programs disagree, and why
Online answers conflict because the answers are lender-specific. Some pages say five-plus units are out. Others say there is no maximum. Others say five to eight or five to ten. All three can be true, because each describes a different lender.
Across the network, the practical pattern is this:
- Some programs cap at four units.
- Some extend to a higher cap, often eight units or more.
- Some mixed-use or commercial-heavy buildings are excluded even below the cap.
- Which income test applies varies by lender and by building size.
An overlay is a lender’s extra rule on top of the base program, and unit caps are among the most common. Do not shop on the headline.
The edge cases that break the general rule
Mixed-use. A storefront as the fifth door may mean the building no longer counts as a five-unit residential property. Many programs limit the non-residential share of space or income, and commercial lease documents join the file.
Basement and ADU units. A permitted, separately leased unit generally counts. An informal one is a risk to both the unit count and the rent evidence.
Owner occupancy. Owner-occupied financing does not carry to five units the way it does for two to four. On a five-plex, plan on investment-property underwriting.
Ineligible property types. Manufactured homes, log homes, and barndominiums are not offered through these programs, whatever their door count.
Lower-leverage structures. Short-term rental collateral follows its own rules, including leverage ceilings and hosting history. Lendmire’s article Can a Five-Unit Short-Term Rental Building Get a DSCR Loan? covers that path. Short-term rental rules can vary by city, county, HOA, and property type, so investors should confirm local rules before relying on projected rental income.
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.
What the investor decision looks like
The decision is a lending decision as much as a property decision. A fourplex and a five-plex can cost about the same, yet they sit in different lender pools. Some investors choose four units to stay in the wider pool. Others accept the narrower pool for the extra door.
A few practical points on program terms, all typical and subject to lender guidelines:
- Purchase leverage. Most investment-property purchase files land at 75%-80% LTV, which means 20%-25% down.
- Cash-out refinance. Leverage tops out around 75% LTV on a standard rental, and about 6 months of seasoning is the common expectation.
- Credit. A 620 floor exists in parts of the network. Most programs want around 660, and 700 or more opens the strongest leverage tiers.
- Reserves. Commonly about 6 months of PITIA, stepping up to about 9 months above $1,500,000. They vary by lender, leverage, and transaction type.
- Loan size. Standard programs run up to $3,000,000. Select lenders in the network handle smaller balances.
- Terms. The 30-year fixed is the spine. Extended terms, interest-only periods, and adjustable structures are available through select lenders.
Most five-unit files tend to turn on the documents, not the credit score. Files stall when the rent roll and the appraisal tell two different stories, or when the unit count is unclear. Fixing the story before submission matters more than a few points of credit. A larger down payment can lift the ratio, but it never erases a unit cap, a credit floor, or a property eligibility rule.
The best files clear both tests: enough equity and enough rental coverage. Even then, DSCR measures rent against PITIA only. Repairs, vacancy, management, utilities, and capital expenses sit outside the calculation, so clearing the ratio does not mean positive cash flow. Tax treatment varies; consult a qualified professional.
Documents to assemble before you ask
Gather these before you talk to a lender, so the count can be confirmed early:
- Current leases or a rent schedule for every unit
- A rent roll that reconciles to those leases
- Operating statements, if the building has history
- Proof the units are legal, such as permits or a certificate of occupancy
- Entity paperwork if you will hold title in an LLC, subject to lender program eligibility
- Insurance and tax details for the building
Read more on how the loan works in Lendmire’s complete DSCR loans guide.
Key Terms Defined
DSCR (debt service coverage ratio): The property’s rent used for lender review divided by its monthly debt obligation, used to judge whether the building supports the loan.
PITIA: Principal, interest, taxes, insurance, and any association dues, which together make up the full monthly payment.
Net operating income (NOI): Rental income after operating costs and a vacancy allowance, before debt payments.
Rent roll: A unit-by-unit list of tenants, lease terms, and rents.
Market rent: What the appraiser concludes a unit would lease for today.
Legal unit: A dwelling that is permitted and can be leased separately.
Overlay: An extra rule a lender adds on top of its base program, such as a unit cap.
Frequently Asked Questions
Does a fifth unit automatically disqualify a DSCR loan?
No, but it narrows the field. Many programs stop at four units, while others go higher. Ask each lender for its unit cap in writing, because the answer is program-specific.
Does a vacant unit count?
It counts as a unit, but its rent may not count. Some programs credit it at the appraiser’s market rent, and others exclude it. Excluding it lowers coverage, so check this before you rely on the building clearing 1.00x.
Does an owner-occupied unit count?
Often it is reviewed case by case. Owner-occupied financing does not extend to five units the way it does for two to four, so plan on investment underwriting for the whole building.
What if the appraiser counts differently from the seller?
The lender usually goes with the lower, documented count. You can supply permits or a certificate of occupancy to support the higher one. Otherwise, restructure the deal around the lower count.
Does clearing the ratio mean the building cash-flows?
No. DSCR compares rent to PITIA only. Repairs, vacancy, management, utilities, and capital expenses sit outside the calculation, so run those costs separately.
Next steps
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 DSCR investor financing through select lenders in its wholesale network, across 41 markets, including Washington, D.C. Qualification is subject to lender guidelines and is not a commitment to lend.
About Lendmire
Lendmire, NMLS# 2371349, is a non-QM mortgage broker serving real estate investors in 41 markets, including Washington, D.C., through DSCR investor loan programs. Qualification is generally reviewed around the subject property’s rental income, not the borrower’s W-2 history — a practical fit for LLC-titled portfolios and self-employed investors. All scenarios remain subject to lender review and program guidelines. Two consecutive Scotsman Guide Top Mortgage Workplace recognitions (2025, 2026).
Get Started
Ready to find the right loan for you?
See your offer in seconds. No credit pull, no obligation.
Informational only. Not a Loan Estimate, approval, or commitment to lend. Program availability and eligibility are subject to lender guidelines, credit approval, property review, and underwriting.
References
2. Fannie Mae Selling Guide B4-1.2-01
This article is part of Lendmire’s DSCR loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Can a W-2 Employee Get a DSCR Loan on a Rental? · Can You Buy a Pittsburgh Rental With a DSCR Loan? · Can You Get a No-Ratio DSCR Loan on a 2-4 Unit Rental?
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
- North Carolina Real Estate Broker · License# 343312 · Verify on NCREC
- North Carolina Insurance Producer · License# 19053198 · Property, Casualty, Life, Health · Verify on NAIC SBS
- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
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.