How to Underwrite a Short-Term Rental
Short-term rentals can out-earn long-term rentals 1.5–3x in the right market, but expenses are higher and revenue is seasonal. The key is conservative occupancy and a full expense picture. Compare the result against our rental property calculator and cap rate calculator to decide between STR and long-term.
The Revenue Formula
Gross Revenue = 365 × Occupancy % × Nightly Rate
NOI = Gross Revenue − Operating Expenses
Worked Example
A 3-bed cabin rents for $180/night at 65% occupancy, with $2,000/month in operating costs:
- Gross revenue = 365 × 0.65 × $180 = $42,705
- Operating expenses = $2,000 × 12 = $24,000 (plus cleaning turnover labor)
- NOI ≈ $42,705 − $24,000 = $18,705/year (~$1,559/month)
- On a $400,000 purchase, cap rate ≈ $18,705 ÷ $400,000 = 4.68%
Underwriting Rules of Thumb
- Occupancy: Underwrite at 60–70%, confirm the deal survives at 55–60%.
- Expenses: Budget 30–50% of gross for STR (vs 15–25% for long-term).
- Regulation: Always confirm local short-term rental ordinances before buying.
