Big Pine Key, FL · Investment

Does buying an Airbnb in Big Pine Key make financial sense?

On modelled assumptions — a $420,000 purchase with $105,000 down — a Big Pine Key short-term rental produces $43,384 of net operating income, a 10% cap rate and positive cash flow of $18,236 a year after financing. You need 36% occupancy just to cover the mortgage.

Modelled estimate

Cap rate

10%

NOI ÷ purchase price

Cash-on-cash return

17%

Cash flow ÷ cash invested

Annual cash flow

$18,236

After operating costs and mortgage

Break-even occupancy

36%

Market models at 62%

The full modelled pro forma

Purchase price (modelled)$420,000
Down payment (25%)$105,000
Loan amount$315,000
Gross annual revenue$63,800
Operating costs (32%)−$20,416
Net operating income$43,384
Mortgage (30yr @ 7%)−$25,148
Cash flow before tax$18,236
Gross yield15%

Operating costs are modelled at 32% of gross revenue for a nightly rental (cleaning, supplies, utilities, platform fees, maintenance, insurance) and 14% for a monthly rental. Financing assumes a 25% down payment and a 30-year loan at 7%. These are planning assumptions, not quotes — replace them with your own numbers. The purchase price shown is modelled from nightly-rate benchmarks, not from listing data — swap in a real asking price before you make any decision. Property taxes, insurance premiums and HOA dues vary enough between properties that they sit inside the 32% operating cost assumption rather than as separate line items.

What would break this deal

  • Occupancy landing below 36% — the point where nightly income no longer covers the mortgage.
  • A rule change that adds a minimum stay or caps nights. Check the Big Pine Key rules before you buy.
  • Paying peak-season prices for a property that only performs around Jan–Feb–Mar.

Next step

Run the numbers against a specific property and a real purchase price.

Compare Big Pine Key with nearby markets

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