The Quick Read: The price a projection supports is solved backward: the lender trims the projected revenue, divides it by the required coverage ratio, subtracts taxes, insurance, and association dues, turns what is left into a loan amount, and divides that loan by the maximum loan-to-value (LTV) ratio, which is up to 75% on a short-term-rental purchase. DSCR, the debt service coverage ratio, simply compares the property’s income to its full monthly housing payment. Two lenders can read the same projection and support two different prices.
- Lenders rarely underwrite the raw projection. They apply their own adjustment, and it varies by lender.
- Association dues sit inside the payment, so higher dues shrink the loan you can carry dollar for dollar.
- Short-term-rental purchases typically reach 75% LTV on the strongest files, with a 1.00 coverage floor and a 640+ credit score, subject to lender guidelines.
- Passing the ratio does not mean the condo makes money. Repairs, vacancy, management, and utilities sit outside the math.
Key Terms Defined
DSCR: the property’s qualifying income divided by its monthly housing payment. A result of 1.00 means income equals the payment.
PITIA: principal, interest, taxes, insurance, and association dues, the full monthly payment a lender uses in the denominator.
Projection: a third-party estimate of what a unit could earn, built from nearby listings rather than the unit’s own history.
Haircut: the discount a lender applies to gross revenue before it counts as qualifying income.
Trailing twelve months (TTM): the unit’s actual hosting revenue over the past year, shown on platform statements or bank deposits.
Warrantable condo: a project that meets standard agency rules on things like investor concentration and litigation. A non-warrantable condo fails at least one of them.
LTV: the loan amount divided by the lower of price or appraised value.
Short-Term Rental Calculator
Run the STR numbers in your market
Rate source: Freddie Mac 30-yr average via FRED® — Federal Reserve Bank of St. Louis · effective Oct 15, 2026
Prefilled with starting assumptions — enter your nightly rate, occupancy, taxes, and insurance for a more accurate picture.
Short-term rental income is documented with a 12-month history or a market data report. Program parameters update from Lendmire’s centralized guideline source.
As of Oct 15, 2026 · General Freddie Mac market benchmark, not a Lendmire loan offer. Nightly rate, occupancy, taxes, and insurance are editable estimates. 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 Lender Turn a Projection Into a Price?
A lender works the problem as a chain, and you can run the same chain before you make an offer. Start with projected revenue, apply the lender’s adjustment, divide by the required coverage, subtract non-loan costs, and convert what remains into a loan and then a price.
Here are the steps in order:
1. Confirm rentals are allowed. 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. If the association bars short stays, the file stops. No ratio fixes that.
2. Classify the building. Warrantable, non-warrantable, or a hotel-style project. This usually sets the leverage ceiling and how many lenders will look at it.
3. Pick the income evidence. Hosting history, a market projection, or long-term rent. The next section covers each.
4. Apply the lender’s adjustment. This is a discount on gross revenue. It is not standardized, and across the wholesale network most programs we place files with set it differently.
5. Divide by the coverage floor. At 1.00, the whole payment can equal the qualifying income. At a higher floor, the payment must be smaller.
6. Subtract taxes, insurance, and dues. What remains is the room for principal and interest.
7. Convert room to loan size. Longer amortization or an interest-only period, where a select lender offers one, stretches the same room into a larger loan.
8. Divide the loan by maximum LTV. On a short-term-rental purchase, that is typically up to 75%. The rest of the price is your down payment, plus closing costs and reserves.
That last point matters. A strong ratio does not erase leverage caps, credit floors, or reserve rules. Reserves commonly run around six months of PITIA, though they vary by lender, leverage, and loan size. The strongest files clear both tests: enough equity and enough rental coverage. Our complete DSCR loans guide covers those program basics in more depth.
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.
Which Income Number Does the Lender Actually Use?
Lenders typically prefer your own trailing history. If a unit has none, some programs accept a projection, and others fall back to the long-term rent opinion from the appraisal. Ask which route your lender will underwrite before you fall in love with any number.
| Income route | When it applies | Watch for |
|---|---|---|
| TTM hosting history | Unit already operates | Statements must match deposits |
| Market projection | No history, program accepts it | Lender discount varies |
| Form 1007 rent | Fallback on single units | Often well below short-term potential |
| Appraiser STR analysis | Where program allows | Not available everywhere |
Form 1007 is the appraisal form for a single-unit rent schedule, and it is built around monthly lease rents. A condo that books well nightly can look thin on that form. The same projection can clear the floor with one lender and miss it with another.
Short-term-rental programs also usually expect about 12 months of landlord or host experience. Ask whether your lender counts that at the borrower level or the property level, because a first-time host buying a unit with no history lands in different places on different programs. For how a year of hosting history changes a cash-out, see Lendmire’s piece How Much Twelve Months of Airbnb History Supports a DSCR Cash-Out.
How Reliable Is the Projection Itself?
Treat a projection as a starting estimate, not a verdict. AirDNA’s Rentalizer documentation explains that the tool takes a weighted average of nearby active listings that match on bedrooms, bathrooms, and guest count, searching within 10 miles of the address. That is a sound method. It is also only as good as the comps it finds.
A unit with unusual views or building amenities may have no true comparables. The analytics firm VaultSTR calls Rentalizer comps-based but says it skews optimistic, reporting 15% to 30% optimism in independent tests. A product comparison by GetChalet found AirDNA close on total revenue but wrong on the occupancy and daily-rate mix. Two underwriters reading the same report may weigh those pieces differently.
Seasonality adds another layer. AirDNA’s Rentalizer Agent help page says the report shows monthly seasonality. A beach condo that earns most of its revenue in a short window is a riskier file than a unit with steady demand, and lenders generally look at annualized averages rather than peak months.
Run the Math Backward: A Worked Example
The cleanest way to see the price ceiling is to use an index instead of dollars. Say a lender’s adjusted qualifying income equals 100 points. Taxes, insurance, and association dues together equal 30 points. These are modeled assumptions, not market data.
At a 1.00 floor, the payment can equal 100 points. Subtract 30 for non-loan costs and 70 points remain for principal and interest. That room, at fixed loan terms, sets the loan size. The loan divided by the maximum LTV then gives the price.
Now change one input at a time:
| Change | Qualifying income | Non-loan costs | Floor | P&I room | Loan size vs. base |
|---|---|---|---|---|---|
| Base case | 100 | 30 | 1.00 | 70 | Baseline |
| Bigger haircut | 90 | 30 | 1.00 | 60 | About 14% smaller |
| Higher dues | 100 | 40 | 1.00 | 60 | About 14% smaller |
| Higher floor | 100 | 30 | 1.20 | About 53 | About 24% smaller |
Each row moves the price ceiling by the same proportion as the loan, because LTV stays fixed. The takeaway is plain. A modest bump in dues does as much damage as a 10% deeper discount on revenue. In an amenity-heavy building with high dues, the same projection supports a much lower price than it does in a bare-bones building.
The floor matters too. Many select programs start at 1.00, and stronger ratios open better pricing and leverage. A separate select-lender path takes coverage below 1.00 with leverage and terms adjusted, so a unit that misses 1.00 is not automatically dead.
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 Condo-Specific Rules Move the Number?
The condo’s classification can change the answer more than the projection does. Warrantable projects open the widest lender pool. Non-warrantable projects narrow it, and leverage tends to tighten.
Investors buying rental condos often have to use DSCR financing for non-warrantable units, according to Scotsman Guide. The same article notes that agency programs stop at borrowers who already hold 10 financed properties, and that DSCR loans carry no such cap. That is why serial condo buyers tend to end up here.
The reason a building is non-warrantable matters. Heavy investor concentration or a project still in presale is often workable. Active litigation or deed restrictions are harder. A hotel-style or rental-pool building is the toughest case, because management controls occupancy and you do not control the income stream. Ask the lender about the specific reason before you rely on any price math.
Where the General Rule Breaks
The backward formula holds in most cases, but a few situations bend it.
- No history and no accepted projection. Some lenders ignore projections and default to the long-term rent form. The condo is then sized on a much lower income number.
- Rules that change after you buy. An association board can adopt a minimum-stay rule later. Your loan was sized on the old rule, and your qualifying income was too.
- Thin comps. A one-of-a-kind building can produce a projection the underwriter simply does not trust.
- High-dues towers. The dues can eat so much payment room that the price ceiling lands below the contract price even with strong revenue.
- Refinance later. On a cash-out, short-term-rental collateral tops out at 70% LTV while a standard rental tops out near 75%, so the same building can support less proceeds than you expected if you re-title it as a short-term rental. These specifics are subject to lender guidelines and a full review of property, leverage, and credit.
Does Passing the Ratio Mean the Condo Cash Flows?
No. DSCR compares income to PITIA only. Vacancy, repairs, furnishings, cleaning, management, utilities, and capital expenses all sit outside the calculation. Short-term rentals tend to carry heavier operating costs than long-term leases. A unit can clear 1.00 comfortably and still lose money after a slow quarter or a pricey repair. Underwrite your own budget on top of the lender’s math.
Tax treatment can depend on how the funds are used and how the property is held; investors should keep clear records and speak with a qualified tax professional before relying on any deduction.
What If the Projection Comes Up Short?
You have a few levers, and they work in a predictable order.
1. Negotiate the price down. This is the cleanest fix. Every point of price lowers the loan and the payment.
2. Put more money down. A larger down payment lowers the payment and can lift the ratio. It cannot override leverage caps or credit floors.
3. Test other income evidence. If you have history, TTM may beat a projection. If you have neither, ask whether an appraiser’s rental analysis is accepted.
4. Try a different lender path. Select lenders in the network adjust leverage and terms for lower coverage, and some offer extended terms or interest-only periods.
5. Walk away. If the unit only works at the raw projection, the deal is probably built on optimism.
Before You Make an Offer: A Checklist
- Read the association declaration and confirm the minimum stay allowed.
- Learn whether the building is warrantable and why not, if it isn’t.
- Pull the projection and check how many true comps support it.
- Ask the lender which income source and adjustment it applies.
- Get the dues, tax, and insurance figures for the unit.
- Run the backward math at the lender’s floor, not yours.
- Confirm your credit score clears about 640 and your reserves are in order.
Frequently Asked Questions
Can I buy an Airbnb condo with a DSCR loan if it has no hosting history?
Sometimes. Some programs accept a third-party projection, and others use the long-term rent form instead. Ask each lender which evidence it accepts before you commit to a contract.
Does the lender use the full AirDNA number?
Usually not. Lenders apply their own adjustment to the projection, and the size of that adjustment varies by lender. Independent testing has also shown the tool can run optimistic, so a conservative file starts below the raw figure.
How much do HOA dues change the price I can afford?
A lot. Dues sit inside PITIA, so each dollar of dues takes a dollar of room away from principal and interest. In the example above, raising non-loan costs by a third cut the loan about 14%. Two condos with the same revenue can support very different prices.
What leverage can I expect on a short-term-rental condo purchase?
Typically up to 75% LTV on the strongest files, with a 1.00 coverage floor and a 640+ credit score, subject to lender guidelines. Non-warrantable projects can tighten leverage. Refinances on short-term-rental collateral typically top out around 70%.
Is a ratio above 1.00 enough to qualify?
No. Eligibility also depends on credit, reserves, leverage, the building’s classification, and the property review. Coverage is one test among several, and a lender reviews every file individually.
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. You can reach the team at 828-256-2183, and anything on a Lendmire program page, including DSCR loans for Airbnb properties, is not a commitment to lend.
Before any offer goes in, solve the price backward from the lender’s number and treat the raw projection as the ceiling of an optimistic case.
About Lendmire
A DSCR-focused mortgage broker, Lendmire (NMLS# 2371349) places investor financing across 41 markets — 40 states plus Washington, D.C. — with DSCR eligibility generally reviewed by the lender on property cash flow instead of tax returns, subject to lender guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in 2025 and 2026.
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References
1. AirDNA Help Center – Rentalizer Revenue Calculator
2. VaultSTR – AirDNA Rentalizer accuracy
3. GetChalet – The Best Airbnb Calculators
4. AirDNA Help Center – Rentalizer Agent
5. Scotsman Guide – Invest in Your Future
This article is part of Lendmire’s short-term rental loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: DSCR vs Conventional Airbnb Loan for an LLC or Partnership Investor · How to Qualify a Suburban Florida Airbnb on a DSCR Loan · DSCR vs Conventional Investment Loan for an Airbnb Property
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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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.