Author: Travis Erickson, Bonelli Financial Group (NMLS 1193479)
Every serious investor now knows to run a property both ways before buying: what it earns as a long-term rental, what it earns as a short-term rental, which strategy wins over the hold. That comparison has become table stakes.
Here is what most of those comparisons still miss: the strategy you choose changes the financing itself. Same property, same purchase price, same borrower, and the loan terms can differ on rate, leverage, qualifying income, and sometimes on whether a loan exists at all, depending on whether you declare it a long-term or short-term rental. I am a mortgage broker who finances both, and the strategy-to-loan interaction is where I watch sophisticated investors get surprised. Here is how it actually works.
DSCR lenders qualify a property on its rental income against its payment. The strategy decides which income gets counted.
Declare it a long-term rental and your qualifying income is the appraiser's market rent opinion, a conservative, lease-comp-based number. Declare it a short-term rental and, with the right program, your qualifying income can be trailing Airbnb revenue or a market data projection, which in strong STR markets runs 50 to 100 percent higher than the long-term figure.
That difference is frequently the entire ballgame. Last year I published a deal-level analysis of the Scottsdale market, running five real scenarios at then-current rates, and the pattern was stark: most of the properties failed DSCR qualification as long-term rentals, posting ratios between 0.71 and 0.91 at standard 25 percent down. The same properties underwritten on short-term rental income qualified easily, at ratios between 1.15 and 1.31. The full scenario math is in our Scottsdale DSCR deal analysis, but the headline is simple: in high-price markets, the strategy declaration is not a detail on the application. It is the qualification.
The reverse pattern exists too. In moderate-price markets with steady tenant demand, long-term rents qualify comfortably and the STR premium is thinner, so the financing advantage of declaring STR shrinks or disappears while the STR's operating risk remains. Which brings us to pricing.
Lenders price risk, and short-term rental income is riskier income: seasonal, occupancy-dependent, regulation-exposed, and operationally demanding. Programs that underwrite to STR income generally charge a premium over the identical loan underwritten to long-term rent, show less appetite for sub-1.0 ratios, and sometimes cap leverage lower.
So the strategy comparison has a second axis investors often skip. It is not just “STR grosses $5,200 and LTR grosses $2,600.” It is “STR grosses more, against a higher rate, a bigger reserve requirement, and real operating costs, while LTR grosses less against cheaper, simpler debt.” After financing, the gap between strategies is almost always narrower than the revenue line suggests. Sometimes it inverts entirely.
There is a principle in deal analysis that the best investors underwrite the downside, not just the upside, and that an STR purchase should still hold water as a long-term rental if it has to. I want to tell you why that principle is not just prudent. It is literally how the credit side of the market thinks.
When an underwriter reviews an aggressive STR projection, the unspoken question is: what does this property carry if the Airbnb plan dies? A city ordinance change, an HOA rental restriction, a license that does not renew, a platform algorithm shift, or simple burnout from running a hospitality business, and the property reverts to its long-term rent. If the long-term rent covers the debt, the loan survives the strategy failing. If it does not, the borrower is feeding the property every month and the lender is holding the risk.
This is why a property that qualifies ONLY on STR income deserves extra scrutiny in your own analysis, even when a lender will happily fund it. You are not just buying a property. You are taking a financing structure that depends on a business plan continuing to work. The deals I am most comfortable financing, and the ones I would buy myself, are the ones where the STR income is the upside and the LTR income is the floor that still covers the payment, or close to it.
Five years ago, STR regulation was something investors checked after closing, if at all. Today it is moving into the loan file. Cities across the country require short-term rental licenses or permits, and in my home market every major Phoenix-area city, including Scottsdale and Tempe, runs a licensing regime. Lenders underwriting to STR income increasingly want evidence the property can legally operate as one: zoning, HOA permission, license eligibility.
This cuts two ways for the analyst. First, an STR projection on a property that cannot legally be an STR is fiction, and you should kill that input before it flatters the comparison. Second, regulatory risk is asymmetric across strategies: an LTR can almost always become an STR later if rules allow, but an STR forced to become an LTR takes an immediate income haircut while the financing was priced to the higher number. When the two strategies score close in your analysis, the regulatory asymmetry should break the tie toward the strategy with the safer floor.
If you want to carry one workflow away from this, make it this sequence:
First, run the property both ways with honest, comp-backed inputs for each strategy. Not asking rents, not peak-month STR revenue annualized.
Second, check the floor. Whatever strategy wins, ask whether the losing strategy's income still covers the proposed payment, or how far short it falls. That gap is your risk position, and it is the same gap your lender is silently measuring.
Third, match the program to the strategy before you offer. STR-income programs, LTR programs, and hybrid options are different products at different prices, and applying through the wrong one wastes weeks. In a competitive market, the investor who shows up with financing already matched to the strategy wins the deal at the same offer price. We run this lender-side math for investors across nine states, and I publish the methodology openly in market-by-market breakdowns like our Mesa and Gilbert DSCR analysis, including the scenarios where the honest answer was that the deal did not pencil.
Fourth, stress the rate. DSCR pricing tiers move with the ratio itself, so a small haircut to qualifying income can bump your rate, which raises the payment, which lowers the ratio further. Run your comparison at a rate an eighth or a quarter above your quote and see if the winner changes.
The side-by-side comparison is the right way to buy. Just remember that the lender is running their own version of it, with more conservative inputs, and the deals that close smoothly are the ones where your analysis and theirs were never far apart.
About the author: Travis Erickson (NMLS 1193479) is a licensed mortgage broker with Bonelli Financial Group in Mesa, Arizona. His team finances long-term, short-term, and student rental properties across nine states, and publishes deal-level DSCR market analyses with real numbers, including where the deals fail.