What Is An STR Loan — The Quick Read: An STR loan is not a separate loan product. It’s a short-term-rental application of a DSCR loan. A DSCR loan is a business-purpose mortgage. It qualifies a property based on the rental income it produces. It does not rely on the borrower’s traditional personal-income documents. Only one thing changes for a short-term rental. The rent figure used for lender review comes from a different place. It might come from platform booking history. It might come from a third-party market projection. It might come from an appraiser’s rent opinion. It does not come from a signed 12-month lease. Everything else stays the same. The coverage-ratio math stays the same. The leverage tiers stay the same. The credit floors stay the same. All of it runs through the same DSCR machinery used for a long-term rental. This is a category of underwriting treatment. It is not a government program. It is not a separate charter.
Key Terms Defined
A few terms show up constantly in this space. People often use them loosely. Let’s clear them up first.
Short-Term Rental Calculator
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Prefilled with local estimates — 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.
Fallback assumption · 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.
- DSCR (Debt Service Coverage Ratio): Divide a property’s monthly rental income by its full monthly payment. That gives you the DSCR number. A result at or above 1.00 means the rent covers the payment on paper.
- PITIA: This stands for principal, interest, taxes, insurance, and association dues (if any). It’s the full monthly payment figure used at the bottom of the DSCR formula. Interest-only files swap this for ITIA instead.
- Trailing platform history: This means 12 months of actual booking revenue. Lenders pull it from Airbnb, VRBO, or a property-management export. Once a property has an operating track record, this becomes the qualifying income basis.
- Rentalizer / third-party projection: This is a market-data tool. AirDNA’s version is the one most lenders reference. It estimates revenue, occupancy, and average daily rate. It does this by looking at comparable nearby listings. Lenders use it when no operating history exists yet.
- Form 1007 / Form 1025: These are Fannie Mae appraisal forms. Form 1007 covers one-unit properties. Form 1025 covers two-to-four-unit properties. Non-QM and DSCR lenders repurpose these forms to set a market rent figure. The loan itself is never sold to Fannie Mae, even though the form comes from them.
- Sub-1.00 program: This is a lender path for properties where discounted rental income lands below 1.00 coverage. Select lenders offer it, with adjusted leverage and terms. It is not a universal offering.
So It’s a Category, Not a Product — Here’s Why That Matters
People often treat an STR loan like it’s one specific thing. In practice, it’s a label. That label gets attached to whatever DSCR structure a lender is willing to run against nightly-rental income. This distinction changes how an investor should shop the loan.
The mechanics work the same as any other DSCR file. Lenders compare property income to the payment. Credit and leverage set the tier. Reserves cover the gap between what the income projects and what actually lands in a slow month. What varies is which lender in a given wholesale network will accept which income-verification method — and at what discount. One program might lean almost entirely on 12 months of trailing platform data. Another might insist on an appraiser’s Form 1007 opinion, no matter the booking history. A third might blend both numbers and use whichever one is lower. No single rulebook sets this for borrowers. It comes down to lender policy. That’s because DSCR loans are business-purpose, non-owner-occupied products. Lenders make them largely to LLCs. They sit outside most of the consumer-protection rules that govern a standard owner-occupied mortgage. Investors should expect that flexibility to cut both ways. Confirm upfront how a given lender treats your specific booking history.
How the Income Actually Gets Verified
Three methods dominate across the DSCR/non-QM space. The method a lender picks can move the rent figure meaningfully — even on the exact same property.
Trailing 12-month platform history is the strongest evidence when it exists. It’s made of actual booking receipts, not a model. Third-party projections most commonly run through AirDNA’s Rentalizer tool. This tool estimates revenue, occupancy, and average daily rate. It does this by analyzing comparable active listings nearby. It’s useful for a property with no history. But remember: it’s a projection, not a measurement. Appraisal-based market rent relies on a licensed appraiser. That appraiser fills out Form 1007 or 1025 — the same forms used in conventional lending. The result is a monthly rent opinion.
Here’s the wrinkle: Fannie Mae itself admits that Form 1007 wasn’t built for this job. The form calls for the “Indicated Monthly Market Rent.” That means the appraiser has to analyze properties leased on a monthly basis — not nightly rentals — per Fannie Mae’s own appraiser guidance. Appraisers are explicitly told not to take a nightly rate and multiply it by 30 to get a monthly figure. That shortcut ignores personal property, business expenses, and vacancy patterns that are baked into a short-term-rental operation.
This is an important detail for investors to understand going in. The appraiser’s job is to establish comparable value and a defensible rent opinion. Nothing more. Per one appraisal-industry review of the form, income ultimately “falls under the lender’s scope.” Assessing business income is explicitly out of scope for the appraiser under McKissock’s breakdown of Form 1007’s role in STR appraisals. The lender decides how — or whether — to apply STR-specific adjustments on top of whatever number the appraiser or the platform data produces.
Running the DSCR Math on a Short-Term Rental
Once a lender picks the rent figure, the math is simple. But there’s a catch: STR income gets a haircut before it ever reaches the formula. Nightly-rental revenue is more volatile and more expense-heavy than a signed lease. So underwriters discount gross STR income before comparing it to the payment. On most files, this cut runs somewhere between 15% and 25%. It depends on the lender and the seasonality of the market. This pattern shows up across DSCR underwriting practices for short-term rentals. Only the discounted number gets divided by the full monthly PITIA. That division produces the DSCR ratio.
Try a hypothetical. Say an investor is looking at a short-term rental listed near $650,000. At the strongest purchase leverage in the network — 75% LTV — the down payment sits at 25%. Gross projected STR revenue gets trimmed by the expense haircut. Only then does it get compared to the payment. If the discounted rent still clears roughly 1.00x or better, the file has a real shot on a standard program. Land a few points below that, and the conversation shifts. Instead of an automatic decline, it moves toward a sub-1.00 structure. Select lenders in the network offer that path, with leverage and terms adjusted to compensate. That’s a very different conversation than a flat “no.” Most borrowers never realize this option exists.
One thing worth saying plainly: clearing 1.00x on the DSCR formula does not mean the property has positive cash flow. The ratio only compares rent against PITIA. Repairs sit outside that calculation. Vacancy stretches sit outside it too. So do cleaning fees, management fees, and utilities on an STR. A property can clear 1.10x on paper and still lose money in a slow quarter, once you count real operating costs.
STR Loan vs. Traditional Mortgage
| Factor | STR / DSCR Loan | Traditional Mortgage |
|---|---|---|
| Reviewed on | Property rental income | Borrower income (W-2, traditional personal-income documentation) |
| Income proof | Booking history, projection, or appraisal | Pay stubs, traditional personal-income documentation, employment |
| Occupancy | Non-owner, investment only | Primary or second home, typically |
| Coverage floor | ~1.00x on select programs | Not applicable — DTI-based |
| Title | Often LLC, subject to program eligibility | Individual borrower |
Here’s the core trade-off. A traditional mortgage runs on the borrower’s personal debt-to-income math. That’s exactly where sophisticated STR operators tend to look weak on paper. Accelerated depreciation and expense write-offs routinely push a profitable short-term rental to a low or negative number on a Schedule E. That’s a mismatch conventional underwriting can’t reconcile — even when the property is cash-flowing well. That mismatch is the entire reason this category of financing exists. Tax treatment can depend on how the funds are used and how the property is held. Investors should keep clear records. They should also speak with a qualified tax professional before relying on any deduction.
What Lenders Actually Look At
Lendmire (NMLS# 2371349) places files through a wholesale network. It’s a mortgage broker that arranges DSCR loans through select lenders, spanning 40 markets, including Washington, D.C. A handful of factors decide where a given STR file lands.
Purchase leverage on the strongest STR files typically runs up to 75% LTV. Cash-out refinances and rate-term refinances top out lower, generally around 70% LTV. That lower cap reflects the added seasonality risk built into nightly-rental cash flow, compared to a signed lease. Credit tends to matter more here than on a standard long-term-rental DSCR file. Most programs in the network want a 700-plus score before treating STR income as the main qualifying basis. On the operating side, roughly 12 months of hosting history is the common expectation. Lenders want that history before leaning heavily on trailing actuals instead of a projection.
Reserve requirements vary by lender, leverage, and loan size. But a common baseline across the network sits around six months of PITIA. That figure steps up toward nine months on larger loans — often above the $1,500,000 mark. Bigger loans mean bigger payments and bigger seasonal swings, so lenders want more cushion. Loan sizes on standard STR programs generally run up to $3,000,000. Above roughly $2,500,000, the network mostly sticks to 30-year fixed structures rather than shorter or adjustable terms. Select lenders offer extended 40-year amortization and interest-only periods. These help borrowers who want to lower the payment side of the ratio. Adjustable-rate structures exist too, for investors who prefer them.
DSCR (or business-purpose) loans are designed for non-owner-occupied investment properties. They’re business-purpose loans, not consumer mortgages. Because of that, they get reviewed under a different framework than a standard owner-occupied purchase.
The Loan-Type Menu: Purchase, Refinance, Cash-Out, and the Sub-1.00 Path
A purchase file at up to 75% LTV is the cleanest version of this loan. It’s a new acquisition. It uses market rent or projected STR income. It carries a standard DSCR floor around 1.00x. A rate-term refinance works similarly, but tops out closer to 70% LTV. That lower cap reflects the shift to actual operating history. A cash-out refinance pulls equity out of an existing STR at up to 70% LTV. This typically happens after around six months of seasoning. Lenders scrutinize cash-out deals more closely, because the borrower is extracting cash rather than just repricing debt.
Below the 1.00x floor, options don’t disappear. They just narrow. Select lenders in the network may offer sub-1.00 coverage, with LTV and pricing adjusted to compensate for the weaker ratio. Separately, some lenders offer no-ratio qualification. That skips the rent-to-payment comparison entirely. This option is generally reserved for borrowers who already own a primary residence. Neither of these paths is a guaranteed fallback for every borrower. They’re narrower doors. Some files may be able to walk through them when the standard math doesn’t quite clear.
Investors who don’t want to touch a first mortgage at all have another option worth mentioning: an investment-property HELOC. Those lines cap at $500,000 total across the network. There’s no tier above that figure for investment properties.
Here’s an honest note on the numbers. A bigger down payment lowers the payment and can lift the DSCR ratio. But it doesn’t erase a credit floor. It doesn’t erase a leverage cap. It doesn’t make an ineligible property type eligible. The strongest STR files clear two tests at once: enough equity in the deal, and enough rental coverage to support the payment. A file that’s heavy on one test and thin on the other gets restructured. It doesn’t get approved outright.
Where This Gets Risky
Two things can derail an STR loan file. Neither has anything to do with the borrower’s credit or the property’s condition. They are projection accuracy and local regulation.
Projections carry real error margins. Individual property revenue estimates from third-party tools can run 15 to 30 percent off in either direction. That margin often gets worse in markets that don’t fit the typical profile the model was trained on, according to one independent review of AirDNA’s projection methodology. In a market with limited STR history, that projection is closer to a guess than a measurement. There simply isn’t enough comparable data to be precise.
Regulation is the bigger long-term risk. No federal law governs short-term rentals. It’s entirely a state, county, city, and HOA matter — and it can change without warning. 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 to carry a file. A property financed as an STR can later become non-compliant with a local ordinance. If that happens, it can lose its qualifying income basis entirely, even though the loan itself hasn’t changed at all. That’s a risk tied to the property’s use, not the borrower’s payment history.
Here’s one property-type note worth flagging plainly. Manufactured homes (single- and double-wide), log homes, and barndominiums are not offered through DSCR programs in the network — full stop. It’s not that they’re “harder to finance.” They’re simply not eligible, no matter how strong the rental income looks.
For the broader mechanics behind how any DSCR file gets underwritten — not just the STR-specific pieces — Lendmire’s complete DSCR loans guide walks through the full picture. And a closer look at what a DSCR loan is covers the base formula this entire category runs on.
If you’re weighing a nightly-rental purchase or refinance against these numbers, Lendmire can help. It can compare the leverage, credit, and coverage angle across programs, instead of assuming one lender’s overlay is the only answer. A scan through a deeper STR DSCR loan breakdown is a reasonable next stop before running the numbers on a specific property.
Loan approval is never guaranteed, and nothing here is a commitment to lend. Every scenario described here is subject to lender approval. It’s also subject to borrower, property, and program guidelines that can shift between lenders and over time. This content is general information only — not financial, legal, or tax advice. Investors should confirm current program terms directly before relying on any figure here.
For deeper background on the mechanics discussed here, see Fannie Mae – Form 1007 (Single-Family Comparable Rent Schedule).
Frequently Asked Questions
Can I get an STR loan with no booking history at all?
Yes — generally through a third-party projection or an appraiser’s market-rent opinion, rather than trailing platform data. New listings and properties in markets with limited comparable data carry a wider margin of error on that projected number. Because of that, lenders often apply more conservative treatment until 12 months of actual operating history exists.
Does an STR loan require the property to be held in an LLC?
Not universally, but it’s common. DSCR and STR loans are business-purpose products, and they’re frequently used with LLC-titled properties, subject to lender program eligibility. Individual-name ownership is often available too. It depends on the specific lender and program.
Can I finance a short-term rental condo or a property inside an HOA?
It depends on two things: the individual condo project’s warrantability, and the HOA’s own rules on nightly rentals. Some associations prohibit short-term leasing outright, no matter what the loan program allows. That local restriction can undercut the entire income basis of the file, even if the lender itself has no issue with condos.
Can local short-term rental rule changes affect my loan after closing?
The loan itself doesn’t change, but the property’s ability to generate the income that justified the file can change. No federal law governs short-term rentals, so local ordinance changes remain a live risk for the life of the loan. This is exactly why you should confirm local rules before leaning on a projected STR income figure in the first place.
Do I need to hit exactly 1.00x DSCR to qualify?
No — 1.00x is a floor on select standard programs, not a universal rule. Some lenders in the network will review coverage below 1.00x, with adjusted leverage and terms. Separately, no-ratio qualification exists through select lenders, generally for borrowers who already own a primary residence. Exact eligibility depends on lender guidelines, credit profile, reserves, and the specific property.
Program availability, loan terms, and eligibility are subject to lender guidelines, credit approval, property review, and full underwriting. This article is educational and is not a loan offer or commitment to lend.
Investors focused on short-term rentals can review DSCR loans for Airbnb and short-term rentals.
About Lendmire
Lendmire (NMLS# 2371349) is a mortgage brokerage focused on DSCR investor financing. It helps arrange programs through wholesale and investor-lending channels in 40 markets, including Washington, D.C. Lenders evaluate DSCR loans based on property cash flow rather than personal income, subject to lender guidelines. These programs support LLC closings and accommodate investors with four or more financed properties. Lendmire was named a Scotsman Guide Top Mortgage Workplace in both 2025 and 2026.
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References
1. Fannie Mae – Appraiser Update, June 2024
2. Fannie Mae – Form 1007 (Single-Family Comparable Rent Schedule)
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.
