Financing a Florida Keys short-term rental starts with one question: can the property legally be rented short-term? The Keys are strict and the rules change island to island. Once a property is a legal, permitted rental, a DSCR loan qualifies it on that income. Here is how the rules and financing work.
Financing a Florida Keys Airbnb comes down to one thing before the loan: can the property legally be rented short-term? The Keys are one of the strictest short-term rental markets in Florida, and the rules change from island to island. Once a property is confirmed as a legal, permitted rental, a DSCR loan qualifies it on that income with no tax returns. Here is how the Keys rules and financing actually work.
The Keys are grandfathered under Florida's pre-2011 exemption, so Monroe County and its cities can and do restrict short-term rentals by zoning and minimum stay. In unincorporated Monroe County, rentals shorter than 28 days are allowed only in specific zoning districts, and where they are allowed they require an annual Special Vacation Rental Permit with conditions on parking, trash, quiet hours, dock and boat use, and a local rental manager on call.
The cities set their own floors. Islamorada and Marathon generally hold a 7-day minimum. Key West treats stays of 28 days or less as transient rentals, which require a state DBPR vacation rental license plus a city transient license, and the number of those licenses is capped. A permitted, licensed rental is a real asset, because the permit transfers with the sale and the supply is limited.
The practical rule: never assume a Keys listing can be rented nightly. Verify the zoning, the minimum-stay rule for that island, and whether a transferable permit or license exists before you write the offer. The Keys waterfront investor page and the Keys mortgage hub go deeper on the local markets.
The workhorse is the DSCR loan. It qualifies the property on its rental income instead of your tax returns, closes in an LLC, and needs no W-2 or employment check. Gross rent divided by the full payment is the ratio: 1.0 is break-even, and 1.25 or higher gets the best pricing. Plan on 20 to 25 percent down on a clean file, more on seasonal or lower-ratio deals, with 6 to 12 months of reserves.
For a new purchase with no rental history, lenders use a short-term rental income projection from AirDNA or Rabbu for the specific Florida Keys address, or an appraiser market-rent estimate. If the property already operates as a rental, that history can strengthen the file. High-value waterfront above the conforming limit moves to portfolio jumbo, and self-employed buyers can use a bank statement loan for a personal-residence purchase.
Permitted Keys short-term rentals often carry strong ratios because nightly rates are high and supply is capped, which is exactly the setup a DSCR lender likes. If the permit does not transfer or the property is not a legal short-term rental, the short-term income cannot be used, and we pivot to a long-term rent figure or a second-home structure instead.
One rule that decides everything here: the rental income only counts if the property can legally be rented short-term under the local rules above. That is why I confirm the zoning and permit status of the exact address before we build the DSCR file. Model your own numbers with the DSCR calculator and the investment ROI tool first.
Insurance is the swing factor in the Keys. Wind and flood premiums on VE-zone and older waterfront can be a large line item, and on a DSCR deal a high premium lowers the ratio and shrinks the loan. Flood zone, elevation, and the condition of any seawall or dock all feed into both the appraisal and the insurance quote.
That is the coastal-lending piece most out-of-market lenders miss. I pre-quote wind and flood insurance on every Keys deal and size the DSCR loan around the real number, not an optimistic guess, so the ratio holds up in underwriting and the payment is honest before you commit.
Can I finance an Airbnb in the Florida Keys?
Yes, once the property is confirmed as a legal, permitted short-term rental. Then a DSCR loan qualifies it on the rental income with no tax returns, typically 20 to 25 percent down and an LLC closing. The Keys are strict, so verify the zoning and permit for the exact address first, because the short-term income only counts if the property can legally be rented that way.
What is the minimum rental period in the Florida Keys?
It varies by location. Unincorporated Monroe County generally requires 28 days unless the property is in a specific zone with a Special Vacation Rental Permit. Islamorada and Marathon generally hold a 7-day minimum. Key West treats 28 days or less as a transient rental that needs a capped city license. Always confirm the rule for the specific island and address.
Does a Keys vacation rental permit transfer when I buy?
In Key West, the transient rental license generally transfers with the property, which is what makes a permitted rental valuable given the cap on licenses. In unincorporated Monroe and the other cities, the Special Vacation Rental Permit and its conditions attach to the property. Confirm the exact permit status in writing before closing, because it drives whether the short-term income counts.
How much down payment do I need for a Keys short-term rental?
Plan on 20 to 25 percent down for a clean DSCR file, and more for a lower ratio or a higher-value waterfront property. Portfolio jumbo on trophy Keys homes above the $990,150 Monroe conforming limit typically starts around 20 to 30 percent. Most programs also want 6 to 12 months of reserves.
Why is insurance such a big deal on a Keys rental loan?
Because insurance is part of the payment the lender uses to size the loan. Wind and flood coverage on a VE-zone or older Keys waterfront home can be a large cost, and on a DSCR loan a high premium lowers the ratio and the amount you can borrow. Pricing it early is the difference between a deal that pencils and one that does not.
Coastal Florida specialist financing vacation rentals, DSCR investment property, jumbo, and non-warrantable condos across the Keys and both coasts. I fold the real insurance and payment numbers into every deal before you write an offer. Not a lawyer or CPA, confirm short-term rental rules with the city and county. Licensed in Florida.
Send me the property. I will run a DSCR read on the rental income, price the flood and wind insurance, and put the true monthly cost in front of you before you write the offer. 30 minutes.