The Quick Read: A DSCR lender counts each floor of a two-flat at the lower of its signed lease or the appraiser’s market rent, adds the two floors together, and divides that total by one building payment. The result is a single coverage ratio for the whole building. An above-market lease on one floor earns nothing extra, and a vacant floor rides on the appraiser’s number alone.
- Each unit is capped at the lower of lease rent and appraisal market rent.
- The two unit rents are summed and divided by one PITIA figure.
- A strong floor cannot offset a weak one beyond its own capped rent.
- Clearing 1.00 on the coverage test does not mean the building cash flows.
- Owner-occupancy and Chicago’s tenant ordinance raise separate questions to settle early.
Chicago is the example here. The mechanics apply to a two-flat anywhere.
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Rate source: Freddie Mac 30-yr average via FRED® — Federal Reserve Bank of St. Louis · effective Oct 29, 2026
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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.
How Does a Two-Flat Turn Into One Number?
A two-flat is one rental property with two rent streams. The lender tests the building as a single unit: total rent used for lender review over total monthly obligation. The steps run in a fixed order, and each one can move the ratio.
1. The appraisal. For a two- to four-unit building, the appraiser completes Form 1025, according to the Fannie Mae Selling Guide. That guide lists Form 1007 for one-unit investment properties. Use these only as form names. DSCR loans are not agency products. The Form 1025 gives a value (which drives leverage) and a market-rent opinion for each unit.
2. The leases. The borrower supplies a lease for each occupied floor. A vacant floor has no lease, so the appraiser’s market rent stands alone.
3. The per-floor comparison. For each floor, the lender takes the lower of the lease rent and the market rent.
4. The sum. The two capped figures are added together.
5. The denominator. That total is divided by the building’s PITIA. PITIA means principal, interest, taxes, insurance, and any association dues. Flood insurance counts if the property carries it.
Gross rent is the numerator on a typical one- to four-unit file. Lenders do not subtract vacancy or operating expenses the way a bank’s cash-flow analysis would. That is why the expense lines on the appraisal form rarely drive the ratio.
Each rental is also tested on its own. Rent from your other properties is not pooled into this building’s number. Lendmire explains that one-property-at-a-time logic in its piece How a DSCR Lender Counts One or Two Weak Rentals in Pooled Coverage.
Why Doesn’t the Higher Lease Win?
The lender wants rent that the building can reasonably repeat, not rent that one tenant happens to pay. So the lower figure governs. A lease below market usually controls. A lease above market earns nothing extra. The appraiser’s schedule acts as the check on the lease.
Here is the practical effect on a two-flat. Say the first floor leases right at market and the second floor leases well above it. The second-floor lease gets trimmed to market. The strong floor gives no credit to the weak one. Flip it, with the second floor leasing well below market, and the low lease governs. Either way, you do not get to average the floors.
| Situation on one floor | Rent that counts | Effect on the ratio |
|---|---|---|
| Lease at market | Lease (equals market) | Neutral |
| Lease above market | Market rent | No lift from the extra |
| Lease below market | The lease | Pulls the ratio down |
| Month-to-month tenant | Depends on the program | Lender may lean on market rent or the last lease |
| Vacant | Appraiser’s market rent | Counts, but only on the appraisal |
| Below-market family lease | Usually the lease | Often scrutinized |
How a month-to-month or expired lease is treated varies by lender. Many programs in the wholesale network accept the appraiser’s market rent for a floor once the lease has lapsed, and some want a fresh lease. Ask before you assume.
What Does a Worked Two-Flat Look Like?
Run the numbers as a ratio walkthrough, with no dollar amounts. These are modeled scenarios, not market data.
Scenario one, matched floors. Both floors lease at market. The two capped rents add up to the full market rent for the building. Against a building payment sized to sit comfortably below that, the ratio lands around 1.2x.
Scenario two, mismatched floors. The first floor leases at market. The second leases above market. After capping, the second floor falls to market. The ratio is the same as scenario one, and the extra rent you actually collect never reaches the test.
Scenario three, one cheap lease. A long-term tenant, or a relative, pays well below market on the second floor. That floor contributes only its low lease. The ratio can slip toward the benchmark, or under it.
Small shifts matter. Add an escrowed flood premium or association dues to the denominator, and use the lower rent in the numerator, and a file that looked like 1.2x can drift toward 1.05x. That is a sensitivity point, not a prediction. It is also why you should confirm the real tax and insurance figures before you count on a ratio.
For context, 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 generally open better pricing and leverage.
What Counts as Rent, and What Doesn’t?
Base rent counts. Ancillary income mostly does not. The appraisal’s rent schedule speaks to each unit’s rent, not to the side income around it.
| Income type | Typically counted? |
|---|---|
| Base monthly rent per unit | Yes |
| Parking or garage rent | Usually not, unless the appraiser includes it |
| Laundry income | Usually not |
| Pet fees and late fees | Usually not |
| Utility reimbursements | Usually not |
Treatment varies by program, so treat the table as the common pattern. If a unit rents short-term, that is a separate path with its own history and coverage expectations. For the network’s short-term numbers, purchases run to 75% LTV and refinances around 70%, with a 640+ score and about 12 months of hosting history typical, subject to lender guidelines.
Where Do the General Rules Break?
Five edge cases come up on Chicago two-flats.
The owner lives in one floor. 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. If you plan to live in one unit, the loan is usually a different product altogether. Confirm eligibility before you build a plan on it. Where an investor already owns a primary residence, a purchase of a two-flat as a pure rental is the clean DSCR fit.
The Chicago tenant ordinance. Landlord rules affect how reliable your in-place rent is, though they do not change the ratio math. The City’s RLTO summary lists units in owner-occupied buildings with six or fewer units as not covered, while noting some provisions apply to all residential units. The ordinance text, as quoted at depositlaw.com, says the exclusion still leaves sections 5-12-130(j) and 5-12-160 in force, and it does not apply when a rental agreement was created to avoid the chapter. If you are not living in the building, assume the exemption may not apply to you.
A missing disclosure on an inherited lease. A Chicago closing-guide author warns that a missing RLTO summary in a lease signed while the building was not owner-occupied can let that tenant leave early, according to Lincoln Square Law. A lease that can end early is weaker evidence of rent. Cross-check each lease against the rent roll before you rely on it.
Pending rule changes. Chicago has discussed a rental registry and relocation payments. The outcome is unresolved, so this article does not predict one.
Unit legality. A garden unit, English basement, or attic conversion does not automatically count as a rentable unit. The appraisal reports the units that exist legally, and a lender counts what the appraiser supports. Confirm the legal unit count before you plan on a third income stream.
Property types matter at the margin too. Manufactured homes, log homes, and barndominiums are not offered in the network’s DSCR programs, though a brick Chicago two-flat is standard collateral.
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.
Why Do One- to Four-Unit Loans Use Gross Rent?
Small buildings run on gross rent over the payment. Five or more units generally shift to a net-operating-income test, where expenses come out first. You may see a two-flat walked through with expense deductions on a blog or a bank’s analysis. That is a different framework. On a typical DSCR file for two units, the lender divides appraiser-supported gross rent by PITIA.
What Does Clearing 1.00 Actually Tell You?
Less than investors think. DSCR compares rent to PITIA only. Repairs, vacancy, management, utilities, and capital expenses all sit outside the calculation. A two-flat with a 1.25x ratio can still lose money in a year with a boiler replacement and a vacant floor. The test tells you the lender is comfortable with the rent-to-payment relationship. It does not tell you the building cash flows.
A bigger down payment helps the ratio, because it lowers the payment. It does not erase leverage caps, credit floors, reserve rules, or property eligibility. The strongest files clear both tests: enough equity and enough rental coverage.
What Loan Terms Usually Apply?
Across the wholesale network, most purchases land at 75%–80% LTV, meaning 20%–25% down. Select high-leverage programs reach 85% LTV with roughly a 700+ score. A cash-out refinance on a standard rental tops out around 75% LTV, with about 6 months of seasoning typical. Credit floors start at 620 in parts of the network, most programs want about 660, and 700+ unlocks the strongest tiers. Loans reach up to $3,000,000 on standard programs, with smaller balances available through select lenders, and reserves commonly run around 6 months of PITIA, stepping up to about 9 months on larger loans. All of this is subject to lender guidelines. The complete DSCR loans guide covers the full structure.
Tax treatment varies; consult a qualified professional.
Documents to Have Ready
- A signed lease for each occupied floor.
- A current rent roll for the building.
- Proof of payments received, such as deposits or statements.
- The RLTO summary attached to leases and renewals where the ordinance applies.
- Current tax and insurance figures, including flood if relevant.
- Notes on any below-market or family tenancy.
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 arranges financing as a broker through select lenders in its wholesale network, across 41 markets, including Washington, D.C. Nothing here is a commitment to lend.
Frequently Asked Questions
Does the owner’s unit count toward rent used for lender review?
Usually the question is whether the loan fits at all. DSCR financing is built for non-owner-occupied investment property. If you live in one floor, confirm program eligibility first, because many files that work for a pure rental do not work for an owner-occupied building.
What if one floor is vacant?
The appraiser’s market rent for that floor counts, and the occupied floor counts at the lower of its lease or market rent. Some lenders add conditions on a vacant unit, so ask about it before you apply.
Does an above-market lease help me qualify?
No. The lender trims each floor to the lower of lease or market rent. The extra rent is real income to you, but it never reaches the ratio.
Does Chicago’s landlord ordinance change the ratio?
It does not change the formula. It can affect how dependable the in-place rent is, especially if a lease lacks required notices. Read the City’s RLTO summary and check your leases.
Does passing the coverage test mean the building cash flows?
No. The test compares rent to PITIA alone. Maintenance, vacancy, management, and capital costs are outside it.
About Lendmire
Lendmire is a DSCR-focused mortgage brokerage, NMLS# 2371349, placing investor loans across 41 markets, including Washington, D.C. DSCR eligibility is generally reviewed by the lender around a property’s rental income rather than personal income documentation, which fits LLC-held rentals, self-employed investors, and portfolios scaling past conventional financed-property limits. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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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
1. Fannie Mae Selling Guide B4-1.2-01
2. City of Chicago RLTO Summary
3. Chicago RLTO §5-12-020 text (depositlaw.com)
4. Lincoln Square Law, two-flat purchase guide
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 Lender Counts Rent From Both Units of a Duplex · How a DSCR Lender Reads a 1.25 Coverage Ratio on a Rental · Can a Non-Recourse DSCR Lender Put Each LLC in Its Own Pool?
Guides: DSCR Loans in Chicago, IL · DSCR Loans in Illinois
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Disclosures. The information presented in this article is general market commentary, not financial, legal, or tax advice. Lendmire is a mortgage brokerage (NMLS# 2371349) — not a direct lender or depository institution — and loan placement is subject to lender underwriting. Nothing in this content represents a commitment to lend. Loan terms, pricing, and program availability vary based on borrower qualifications, property characteristics, and state of subject property, and are subject to change at any time. Lendmire complies with Equal Housing Opportunity requirements. Consumer access: nmlsconsumeraccess.org.