The Quick Read: On a triplex, the lender tests each unit’s rent on its own, counting leased units at the lower of the lease or the appraiser’s market rent and vacant units usually at market rent, then divides the total by the full monthly housing obligation (principal, interest, taxes, insurance, and dues). Vacancy is not a separate haircut on most files. It lives inside the rent counted for each unit. Program details vary by lender, so confirm them before you pick a file.
- One empty unit is a third of a triplex’s rent, so a single vacancy or a single below-market lease moves the ratio far more than it would in a larger building.
- A lease above market earns nothing extra. A lease below market holds the counted rent down.
- Rent that is not documented is treated as if the unit were vacant.
- Clearing 1.00 does not mean the building makes money. The ratio compares rent to the payment and nothing else.
- An owner living in any unit makes the building ineligible for this kind of loan.
How Does a Lender Count Vacancy in a Triplex?
The vacancy treatment sits inside each unit’s counted rent. Leased units count at a lease-supported figure. Vacant units usually count at the appraiser’s market-rent opinion. The lender adds the three numbers and divides by the payment.
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Rate source: Freddie Mac 30-yr average via FRED® — Federal Reserve Bank of St. Louis · effective Oct 15, 2026
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Program parameters update from Lendmire’s centralized guideline source. Taxes and insurance are editable estimates.
As of Oct 15, 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.
Here is where people get confused. Some articles describe a blanket vacancy haircut on gross rent. Others say lenders ignore vacancy entirely. Both can be true, because no regulator owns this. Every program writes its own rules. Across the wholesale network Lendmire places files with, most programs use gross rent over the full payment. A few apply a discount to vacant units. Others count the appraiser’s figure in full. A handful want a lease in place on a refinance.
That is why you compare programs before you pick one. The complete DSCR loans guide covers the basics of the ratio.
One more distinction matters. Commercial lenders divide net operating income by debt service, with expenses deducted first. Residential 2–4 unit programs generally skip that step and use gross rent over the payment. A triplex sits in the residential bucket. A fourplex does too. Five units and up moves to commercial-style analysis. Don’t mix the two formulas when you read a lender’s page.
Which Rent Counts for Each Unit?
Each unit gets its own test. An above-market unit does not offset a below-market one, and averaging the three rents hides the loss. Here is how the usual situations read across most programs.
| Unit situation | Rent usually counted |
|---|---|
| Leased at market | The lease (equals market) |
| Leased below market | The lease, the lower figure |
| Leased above market | Market rent, not the lease |
| Month-to-month or expired | Market rent, with proof of payment |
| Vacant and rent-ready | Market rent from the appraisal |
| Vacant, needs work | Often a problem; finish it first |
The lower-of rule is the one to remember. When a lease and market rent both exist, the smaller number wins. The lender is protecting itself from a rent that won’t last.
A few programs also trim vacant units below full market rent. Ask which version you are dealing with.
Lease Requirements, Unit by Unit
A signed lease is the main proof that an occupied unit earns what you say it earns. Underwriters want to see tenant names, the lease start and end dates, the monthly rent, and any concessions. They check that the names and dates match the rent roll. Then they look for proof the tenant is paying.
That proof is usually bank deposits, a payment ledger, or both. A rent roll alone proves nothing. It is your own summary, so it has to reconcile to leases and deposits.
Month-to-month tenants and expired leases are common and workable. The unit leans on market rent, and receipts show the tenant is still there. Security deposits get checked on some files. Some want months left on the lease and some do not, so ask early.
For the full document stack on a refinance, see Lendmire’s piece Lease and Rent Roll Docs a Cash-Out Lender Requires.
The Appraisal Behind the Market Rent
The appraisal supplies the market-rent opinion for every vacant unit and every lease check. For two- to four-unit buildings, the appraiser uses the Small Residential Income Property Appraisal Report, Form 1025. For contrast only, the Fannie Mae Selling Guide lists that same form for two- to four-unit appraisals. DSCR loans are not agency products, but the appraisal form is a shared industry tool.
The form carries a unit-level rent schedule, and an operating income statement commonly rides along with it. Single-family rentals use a different form. The sample Form 1025 from e-appraise includes a comment field where the appraiser explains differences between actual and estimated rents. Read those comments when your report comes back. They tell you where the lender may push.
The same form turns up in very different programs. HUD’s mortgagee letter on FHA loans with no rental history requires a 1025 showing fair market rent and asks for prospective leases when they are available. Different loan, same document.
Building the Triplex Rent Roll
A good rent roll is boring and complete. One row per unit, with these fields:
- Unit number and tenant name
- Lease start and end dates
- Contract rent and any concessions
- Security deposit held
- Delinquency, if any
- Status: occupied, notice given, vacant, or rent-ready
Each column answers a question the underwriter would otherwise ask by email. Rent-ready status matters most on a vacant unit. A unit that cannot be rented today is a different file from one that could be leased tomorrow.
The common errors are small. A rent figure that doesn’t match deposits. A lease end date already passed with no note. Fix these before the file goes in, not after.
Worked Example: One Triplex, Three Situations
Run the numbers on a modeled triplex. These are illustrative assumptions, not market data. Assume all three units share the same market rent, and that the building’s full market rent covers the payment at 1.25x.
- Unit A is leased at market. It counts in full.
- Unit B is leased about 10% below market. It counts at the lease.
- Unit C is vacant and rent-ready. It counts at market rent.
Counted rent is roughly 97% of the full figure. The ratio lands near 1.21x.
Now change one thing. Say the program counts leased units only and Unit C is empty. Counted rent drops to about 63% of full market rent, and the ratio falls to roughly 0.79x. Same building, same payment, a swing of more than 0.4.
That is under the 1.00 mark where many select programs start. A separate select-lender path takes coverage below 1.00 with leverage and terms adjusted, subject to lender guidelines, credit approval, and property review. The other fix is to lease Unit C and renew Unit B at market. That puts the file back near 1.25x.
Where the Rule Breaks
The general rule has real exceptions. Here are the named ones.
Fully vacant building. Often workable on appraisal market rent, most routinely on a purchase. Some lenders trim leverage, discount the rent, or want a lease in place on a refinance.
Below-market lease. The lower-of rule holds coverage down until the lease renews. Renewing at documented market rent before the appraisal fixes the lease side.
Lease above market. Rent in a lease that exceeds the appraiser’s market rent figure is ignored. Don’t build your underwriting numbers on it.
Owner or relative in a unit. 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. An owner living in any unit makes the building ineligible. A relative living rent-free is also a problem. A relative paying market rent under a real lease is program-specific.
Renovation in progress. Finish and lease the unit first. Significant vacancy plus deferred maintenance often needs different financing before a DSCR file makes sense.
Five or more units. Underwriting shifts to commercial analysis with expenses deducted first.
Purchase vs. Refinance With a Vacant Unit
Vacancy reads differently depending on the transaction. A purchase leans on the appraisal. A refinance has an operating history, so lenders look at it harder.
| Factor | Purchase | Refinance |
|---|---|---|
| Vacant unit | Usually market rent | Tighter, program-specific |
| Lease in place | Often not required | Some programs want one |
| Leverage impact | Rarely changes | May be trimmed |
On a cash-out refinance, most programs in the network top out around 75% LTV on a standard rental, and about six months of seasoning is the common expectation. A vacant unit can make a lender trim that further.
Passing the Ratio Is Not the Same as Making Money
Clearing 1.00 is not positive cash flow. The ratio compares rent to the payment. Repairs, vacancy, management, utilities, and capex all sit outside it. Honestly, this is the part new investors miss most (and it is the one that costs real money).
Stress the file yourself. Start from the modeled 1.25x on full market rent:
| Scenario | Modeled ratio |
|---|---|
| All three units at market | About 1.25x |
| One unit 10% under market | About 1.21x |
| One unit vacant, lower-of rule | About 0.83x |
| One vacant, another 10% under | About 0.79x |
A thin file at 1.05x looks fine until a unit turns over. The stronger play is to keep coverage cushioned enough that one empty unit doesn’t sink the next refinance. Reserves matter here too. They vary by lender, leverage, loan size, and transaction type, commonly around six months of the payment, and about nine months on loans above $1,500,000. A slow lease-up eats cash.
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.
Before You Apply
On the program side, most purchases of an investment triplex land at 75%–80% LTV, which is 20%–25% down. Select high-leverage programs reach 85% LTV on an investment purchase with roughly a 700+ score. Credit floors run from 620 in parts of the network to around 660 on most programs, and 700+ opens the strongest tiers. Loan sizes run up to $3,000,000 on standard programs, subject to lender guidelines.
A bigger down payment lowers the payment and can lift the ratio. It never erases leverage caps, credit floors, reserve rules, or property eligibility. The strongest files clear both tests: enough equity and enough rental coverage.
Your practical checklist:
1. Lease the vacant unit and document it.
2. Renew below-market leases at market.
3. Reconcile the rent roll to leases and deposits.
4. Gather entity documents and reserve statements.
5. Ask the lender how vacant units are counted and whether a lease is required on a refinance.
The question set is the same on a larger deal. For a bigger package, Lendmire’s guide How to Build a Rent Roll and Lease Package for a Portfolio DSCR Loan shows the layout.
In the files Lendmire sees, the biggest surprises come from rent that was never documented, not from the ratio itself. A tenant paying cash with no deposits, a lease that expired without a note, a unit labeled occupied that the appraiser found empty. Clean paper beats a high rent figure.
Key Terms Defined
DSCR (debt service coverage ratio): Monthly rent counted by the lender divided by the monthly housing payment.
PITIA: Principal, interest, taxes, insurance, and association dues, the full monthly obligation.
LTV (loan-to-value): The loan balance as a percentage of the property’s value.
Rent roll: A unit-by-unit schedule of tenants, leases, rents, and status.
Market rent: The appraiser’s opinion of what a unit would rent for today.
Lower-of rule: When a lease and market rent both exist, the smaller figure is the one counted.
Seasoning: The waiting period between buying a property and refinancing it.
Lease-up: The stretch between listing a vacant unit and having a tenant paying rent.
Frequently Asked Questions
Do vacant units count as zero income in a triplex?
No. Vacant units are typically counted at the appraiser’s market rent, and one empty unit is not a disqualifier on most purchase files. A few programs discount that figure. Ask how your lender treats it before you commit.
Is a signed lease required for every unit?
Occupied units generally need a lease or proof of payment. Month-to-month and expired leases lean on market rent, with deposits or receipts showing the tenant still pays. Rent you cannot document is treated as vacant. Minimum remaining terms vary by program.
Does a high lease boost my rent used for lender review?
No. The lower-of rule caps it at the appraiser’s market rent. A lease above market is not wrong, but it earns nothing extra in the ratio.
How many units can be vacant in a triplex?
No single answer covers every program. In a three-unit building, each unit is a third of the rent, so one vacancy changes the ratio sharply. Two vacancies leave little rent to count. A fully vacant building can still be workable on market rent, though some lenders trim leverage.
Does passing the ratio mean the triplex makes money?
No. The ratio compares rent to the payment only. Repairs, vacancy, management, utilities, and capex sit outside it. Run your own cash-flow model alongside the lender’s number.
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. It is a broker arranging financing through select lenders in its wholesale network across 41 markets, including Washington, D.C. Tax treatment varies; consult a qualified professional.
The triplex rewards the owner who treats the rent roll as a loan document from the day the first lease is signed.
About Lendmire
Lendmire (NMLS# 2371349) is a DSCR-focused mortgage broker that helps arrange investor financing across 41 markets, including Washington, D.C., through wholesale and investor-lending channels. DSCR eligibility is generally reviewed by the lender around the property’s rental income rather than personal income documentation, subject to lender guidelines — which works for self-employed investors, LLC operators, and portfolios above four financed properties. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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References
2. e-appraise sample Form 1025 / Form 72
3. HUD Mortgagee Letter on FHA fair market rent for 2–4 unit properties
This article is part of Lendmire’s DSCR loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: DSCR Portfolio Release Test Requirements for the Rentals Left Behind · Can You Get Cash From a 2-4 Unit Rental With a DSCR Loan? · Portfolio DSCR Reserve Requirements With Deferred Maintenance
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Important disclosures. Lendmire (NMLS# 2371349) is a licensed mortgage brokerage. Lendmire is not a direct lender, depository institution, or financial advisor. All loan inquiries are subject to lender underwriting; this article does not constitute a commitment to lend. Rates, terms, and program guidelines are subject to change without notice and vary by borrower profile, property type, and state. Information in this article is general in nature and is not financial, legal, or tax advice. Equal Housing Opportunity. NMLS Consumer Access: nmlsconsumeraccess.org.