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Deal underwriting guide

What to check before you buy an Airbnb

A high nightly rate can make a weak deal look good. What matters is whether the property still works after the ordinary costs and slow months show up.

Updated June 19, 2026Jump to the input checks

Run the numbers first

Use your own assumptions for revenue, expenses, financing, and setup costs.

Open Deal Analyzer

Four numbers worth watching

The calculator produces a lot of output. Start here.

Annual cash flow

Gross revenue - operating expenses - debt service

What is left after normal costs and debt payments.

Cash-on-cash return

Annual cash flow / total cash invested

How hard your cash is working in this property.

Cap rate

Net operating income / purchase price

A financing-neutral way to compare properties.

Break-even occupancy

Required booked nights / available nights

How full the calendar must be before you stop losing money.

Check the inputs

The math is only as good as what you enter. Verify these before you take the result seriously.

  1. 1

    Market revenue

    Nightly rate, occupancy, seasonality, and average stay length

  2. 2

    Operating costs

    Cleaning, supplies, utilities, insurance, maintenance, and management

  3. 3

    Cash required

    Down payment, closing costs, furnishing, repairs, and reserves

  4. 4

    Financing

    Payment, rate, taxes, insurance escrow, and lender DSCR constraints

  5. 5

    Risk controls

    Break-even occupancy, local regulations, HOA rules, and a slow-season cushion

Pressure-test the deal

Do not model only the month you hope to have. Lower the occupancy and nightly rate, then add a little room for costs. If one small change wipes out the cash flow, you have your answer.

A fragile deal usually looks like this

Renegotiate or walk away if the deal depends on any of these.

  • The deal needs aggressive occupancy to stay positive.
  • Cleaning or management labor is priced below reality.
  • There is no maintenance reserve or slow-season cushion.
  • Local STR rules or HOA restrictions are still unclear.

A few common questions

What is an Airbnb deal analyzer?
It is a calculator that puts revenue, expenses, financing, and startup cash in one place. The result should show cash flow, cap rate, cash-on-cash return, and the occupancy needed to break even.
What numbers do I need to analyze an Airbnb deal?
At minimum, use the purchase price or rent, startup cash, nightly rate, occupancy, average stay, cleaning, platform fees, taxes, insurance, utilities, maintenance, management, and loan terms when applicable.
What is a good Airbnb deal?
There is no universal cutoff. Look for positive cash flow under conservative assumptions, a return that meets your target, and enough distance between expected and break-even occupancy.
Should I use revenue estimates from the seller?
Use them as a lead, not a fact. Check active listings, seasonality, local rules, and at least one lower-revenue case.