The Quick Read: On a building with five or more units, the lender takes the smaller of two maximum loans, one from appraised value and one from the income the building can carry at the required coverage ratio, after rebuilding the owner’s income into its own more conservative net operating income.
- Unit count sets the formula. Buildings with 1-4 units are tested on rent against the full monthly obligation. Buildings with 5+ units are tested on net operating income (NOI) against annual debt service.
- Lender NOI is usually lower than owner NOI, because the lender adds a management fee, reserves, and a vacancy factor.
- The value cap and the coverage cap are separate tests. The lower result is the loan.
- On a cash-out refinance of an investment property, leverage tops out around 75% LTV across most of the wholesale network, with about 6 months of seasoning as the common expectation.
- Clearing 1.00 coverage is not the same as positive cash flow.
Which Formula Applies to Your Building?
The unit count decides the formula. A 1-4 unit building is tested on gross monthly rent divided by PITIA (principal, interest, taxes, insurance, and association dues). A 5+ unit building is tested on NOI divided by annual debt service. Using the wrong one is a common mistake on these files.
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| Factor | 1-4 units | 5+ units |
|---|---|---|
| Income test | Rent vs PITIA | NOI vs debt service |
| Appraisal | Rent schedule | Commercial, income-based |
| Key documents | Lease, rent survey | Rent roll, T-12 |
| Expenses counted | Only PITIA | Full operating expenses |
Gross rent over a mortgage payment leaves out operating costs. On a larger building that overstates coverage. A lender working from NOI will land on a lower number than an owner using the shortcut.
Across the wholesale network, 5+ files get commercial-style treatment. That means a commercial appraisal, a current rent roll, a trailing-12-month operating statement (T-12), and a review of the owner’s track record. The complete DSCR loans guide covers the basic ratio. This article covers the larger-building mechanics.
How Does the Lender Rebuild Your Income?
The lender replaces your reported NOI with its own. It starts from the rent roll and the T-12, then adjusts both toward what a typical owner would earn and spend.
A T-12 shows what actually happened month by month, while a pro forma shows what someone expects. Lenders anchor on the T-12 and check it against the rent roll. A gap between the two that no one can explain is a common reason a file stalls early.
Typical adjustments:
1. Strip one-time income and owner-specific expenses.
2. Add a market management fee, even if the owner self-manages.
3. Add replacement reserves if the T-12 shows none.
4. Reset property taxes to the assessment that follows the refinance.
5. Apply a stabilized vacancy factor, even to a full building.
Altrio cites management fees of 2.5-4% of effective gross income and replacement reserves of about $250-300 per unit per year. Those are market-wide underwriting norms, not network parameters. Treatment varies by lender, and some place reserves above the NOI line while others place them below it. Ask which convention applies before you compare offers.
A self-managing owner feels this most. Your own books may show no management cost. The lender’s NOI will still carry one.
What Are the Two Ceilings?
The loan is the lower of a value cap and a coverage cap. Each is a separate calculation, and the building must clear both.
- Value cap: the LTV limit multiplied by the appraised value.
- Coverage cap: underwritten NOI divided by the required coverage ratio gives the maximum annual debt service. Divide that by the loan constant (annual debt service per dollar borrowed) to get the maximum loan.
Appraisers value a 5+ unit building by capitalizing its income. That ties the value cap to NOI as well. Value moves with NOI and cap rate, while the coverage cap moves with NOI and the payment assumptions.
In the wholesale network, 1.00 is where many select programs start. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted. Stronger ratios open better pricing and higher leverage.
Which Ceiling Binds?
You can test it without a payment figure. Multiply the LTV, the required coverage ratio, and the loan constant. If that product is larger than the building’s cap rate, the coverage cap is the lower one. If it is smaller, the value cap binds.
Higher payment assumptions raise the loan constant. That pushes more files into coverage-bound territory. Lower payment assumptions push the other way.
Some commercial lenders add a third test. Debt yield is NOI divided by the loan, and it ignores rate and amortization. It sets a floor on how much income must sit behind each dollar lent, whatever the payment looks like.
Worked Example: Index Numbers, Not Dollars
Run the numbers on a modeled apartment building. These inputs are assumptions for illustration, not market data and not program terms. Owner-stated NOI is set to an index of 100.
- Owner-stated NOI: 100.
- After a market management fee, replacement reserves, a stabilized vacancy factor, and a tax reset, lender NOI lands around 88.
- Assume a 1.25x coverage requirement and a 75% LTV, both as modeled assumptions. Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.
Because NOI fell 12 points, the coverage cap fell by the same 12%. The appraised value fell by about the same share, assuming the cap rate holds. So the owner’s expectation was 12% too high on both ceilings before any payment assumption entered.
Now change the payment side only. If the loan constant rises, NOI and appraised value stay put. Only the coverage cap shrinks. The value cap does not move at all.
Two practical points follow:
- A higher NOI helps twice. It lifts the coverage cap and it supports a higher appraised value, depending on comps and underwriter review.
- A payment-side change only helps or hurts the coverage cap.
Why Does the Lender’s Number Differ From Yours?
The gap usually comes from expenses and vacancy, not rent. Rent rolls are easy to verify. Expense lines are where owner and lender part ways.
| Line | Owner view | Lender view |
|---|---|---|
| Vacancy | Actual, often near zero | Stabilized factor applied |
| Management | Self-managed, no cost | Market fee added |
| Reserves | Not in the books | Added per unit |
| Taxes | Current bill | Reset after refinance |
| One-time items | Included | Stripped out |
Pre-normalize your own file before you apply. Build the lender view yourself, and you will know the likely loan before the appraisal comes back.
What Changes on a Refinance?
Cash-out and rate-and-term refinances use the same two ceilings with different leverage. On a cash-out refinance of an investment property, most programs in the network top out around 75% LTV, with about 6 months of seasoning as the common expectation. Seasoning is documented from the settlement statement on the purchase.
Equity math often overstates the cash you will net. A building with plenty of equity can still be held down by the coverage cap. Income, not equity, is frequently the binding side.
Other file factors, all subject to lender guidelines:
- Credit: a 620 floor exists in parts of the network. Most programs want around 660, and 700+ unlocks the strongest leverage tiers.
- Loan size: roughly up to $3,000,000 on standard programs. Above $2,500,000 the network generally holds to 30-year fixed structures.
- Reserves: they vary by lender, leverage, loan size, and transaction type. About 6 months of PITIA is common, and loans above $1,500,000 typically step up to about 9 months.
- Term structures: the 30-year fixed is the spine. Interest-only periods and 40-year terms are available through select lenders. Many commercial-style lenders still size on the fully amortizing payment, so an interest-only period may not enlarge the loan.
A bigger down payment or lower leverage can lift coverage. It does not erase credit floors, reserve rules, or property eligibility. The strongest files clear both tests: enough equity and enough rental coverage.
Tax treatment varies; consult a qualified professional.
Where the General Rule Breaks
- Coverage below 1.00. Programs below 1.00 are available through select lenders in the network, with leverage and terms adjusted. This is a different path from the 1.00-floor programs, not a lower floor on the same one.
- Clearing 1.00 is not positive cash flow. The ratio compares rent or NOI to the debt obligation. Capex and other items outside the calculation still hit the owner’s pocket. Never read 1.00 as proof the building cash-flows.
- Rate sensitivity. The same building with flat NOI can lose coverage when the payment assumption rises. In low-payment markets value or debt yield tends to bind. In high-payment markets coverage binds.
- Government-insured loans. HUD 223(f) is a separate track. It sizes to the smallest of several tests, with one expressed as roughly 87% of NOI, equal to about 1.15x coverage. It has its own paperwork and process, and it is not a DSCR loan.
- Short-term or mixed-use income. These need trailing historical income, and lenders discount it more heavily than long-term leases. 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.
- Thin rental history. Recently renovated or newly leased buildings may need more months of lease evidence before full market rent counts.
- Property types the network does not offer. Manufactured homes, log homes, and barndominiums fall outside these DSCR programs.
For a mid-size comparison, Lendmire’s piece on how a super jumbo DSCR lender sizes a ten-unit boutique building shows the same logic at larger balances.
What Does the Lender Need From You?
Reconciled documents matter more than volume. The file should show that rent roll, leases, and T-12 tell one story.
1. A current rent roll with unit mix, lease dates, and rents.
2. A T-12 operating statement and any current-year budget.
3. Entity documents for the borrowing LLC, subject to lender program eligibility.
4. Insurance quote, tax bills, and any association or utility details.
5. Reserves documentation: statements showing the required months of PITIA.
6. Access for the commercial appraisal.
Borrower credit and reserves still get reviewed.
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.
If the Numbers Fall Short
- If coverage binds, raise NOI, cut expenses that survive normalization, or accept a smaller loan.
- If value binds, wait for improved NOI to show in the T-12, or accept lower proceeds.
- If both are close, a lower-leverage structure can bring coverage back above the line.
- If reserves are short, document additional liquidity before submission.
- If the building sits near the edge, a select-lender sub-1.00 path may apply, with leverage and terms adjusted.
Self-Sizing Checklist
1. Classify the building: 1-4 units or 5+.
2. Build NOI from the rent roll and T-12.
3. Normalize it: management fee, reserves, vacancy, taxes.
4. Pick a modeled coverage ratio and back out the coverage cap.
5. Multiply the LTV cap by the appraised value for the value cap.
6. Take the lower figure, then check reserves and seasoning.
Key Terms Defined
Sizing: the process of finding the largest loan the building’s value and income can support.
NOI (net operating income): income after operating expenses and before debt service.
Underwritten NOI: the lender’s adjusted version of NOI, usually below the owner’s figure.
Debt service: the principal and interest owed on the loan, tested against NOI on 5+ unit files.
Loan constant: annual debt service divided by the loan amount, used to turn NOI into a maximum loan.
LTV (loan-to-value): the loan amount as a percentage of appraised value.
Debt yield: NOI divided by the loan amount, used by some lenders as a third test.
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 mortgage broker that arranges these loans through select lenders in its wholesale network, a non-QM platform spanning 41 markets, including Washington, D.C. Programs are subject to lender guidelines, and nothing here is a commitment to lend.
Frequently Asked Questions
Does unit count change how the lender tests coverage?
Yes. A 1-4 unit building is tested on rent against PITIA. A 5+ unit building is tested on NOI, which is rent after operating expenses, against debt service. That is why a four-unit and a five-unit building can get very different treatment.
Why is the lender’s NOI lower than mine?
The lender adds costs your books may not carry: a market management fee, replacement reserves, a stabilized vacancy factor, and a tax reset. It also strips one-time items. Pre-normalizing your own numbers closes most of the gap.
Is 1.00 the minimum coverage for an apartment refinance?
It is where many select programs in the network start, not a universal rule. Stronger ratios open better pricing and more leverage.
How much can I pull out on a cash-out refinance?
Cash-out on an investment property tops out around 75% LTV across most of the network, with about 6 months of seasoning as the common expectation. The coverage cap can still produce a smaller loan than the LTV cap allows. Each figure is subject to lender guidelines and a complete review of property type, leverage, and credit.
Do DSCR lenders look at personal income?
Qualification runs primarily on property-level rental income covering the payment, subject to lender guidelines. Credit score and reserves are still reviewed. Credit usually needs to be around 660 on most programs, and some parts of the network accept 620.
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
1. Altrio: What Is a T-12 in Real Estate
3. Roach Lorenz: How HUD Sizes a 223(f) Mortgage
This article is part of Lendmire’s DSCR loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How Much a DSCR Lender Lends to an LLC Borrower · How a DSCR Lender Sizes a Refinance Instead of a Rental Sale · Can You Still Close a DSCR Loan If Your Lender Fails?
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Disclosure information. Lendmire is a state-licensed mortgage brokerage under NMLS# 2371349. Lendmire is not a depository institution, direct lender, or financial advisor — all loans referenced are placed through wholesale lender partners and are subject to each lender's underwriting standards. This article is provided for general informational purposes and is not a commitment to lend, nor does it constitute financial, legal, or tax advice. Loan programs, terms, rates, and qualification standards change without notice and depend on borrower profile, property type, and the state in which the subject property is located. Equal Housing Opportunity provider. NMLS Consumer Access: nmlsconsumeraccess.org.