Five lenders can quote the same property and land in five different places — not because one is dishonest, but because they count the income differently, price the prepayment differently, and bury different things in the fees. The questions below surface those differences before you have paid for an appraisal.
What to ask
Start with the question that moves everything: how do you underwrite short-term-rental income — a projection tool, the property's trailing twelve months, or long-term market rent? The answer can swing your qualifying income enormously. Then: what minimum DSCR do you need and how is the payment side computed? What does the prepayment penalty look like, and does it step down by year? Are the quoted rate's points and fees included, and what are the lock terms? Can I borrow in an LLC without a personal-guarantee surprise? And does the property need ownership or operating seasoning before the income counts?
Red flags
A teaser rate quoted with no mention of points or prepayment terms. A lender that markets STR loans but quietly underwrites on long-term rent — your qualifying income shrinks at exactly the wrong moment. No familiarity with your market's permit environment, which a specialist lender should at least ask about. And pressure to waive contingencies to move fast: speed is a real DSCR advantage, but it should come from process, not from you absorbing the risk.
When you actually need one
DSCR lending earns its premium when your tax returns understate your capacity — self-employed buyers, investors past the conventional loan limits, or anyone buying in an LLC. If you qualify conventionally for a second home, run both quotes; the conventional rate is usually lower, and the honest comparison is after points, prepay terms, and the value of closing in an entity. The five firms here run from STR pure-specialists to national lenders with bridge products, so match the shop to the deal, not the ad.