Explore the Library
Home Financial Library About Contact

Short-Term Rentals01 · Deal Analysis

Know whether a property makes money before you buy it.

Underwriting one specific property: assumptions you can defend, revenue and costs estimated without flattering them, and knowing which numbers to trust before you buy.

Start here →See the guides in order →

Start here · The guide to read first

The STR Deal Underwriting Manual

How to underwrite a short-term rental end to end — set conservative assumptions, estimate revenue without fooling yourself, model the real cost stack, and reach a go / no-go you can defend.

Matt Nunn · 21 min read

Read the guide →

What it covers

  • The five-step underwriting sequence
  • How to discount an AirDNA projection
  • The costs owners always forget
  • When the answer is no

Start with the guide above — the rest of Deal Analysis builds on it.

Reading order

The guides, in order.

Assumptions come first, because every model inherits them. Revenue and costs follow, then the returns, and last the verdict.

  1. Assumptions

    The Assumptions Behind Every Model

    Every model is only as good as its inputs. Set them conservatively and pressure-test them.

  2. Revenue

    Estimating STR Revenue Without Fooling Yourself

    ADR, occupancy, RevPAN — and how not to overestimate.

  3. Costs

    What STRs Actually Cost to Run

    The full operating-cost stack, and why your Airbnb isn't cash flowing.

  4. Returns

    How STR Returns Are Measured

    Cash-on-cash, cap rate, break-even — and which to trust.

  5. Verdict

    Does This Deal Actually Pencil?

    The capstone decision, with the calculator attached.

Decision guides

When there's a real choice.

Judgment calls, not how-tos — each weighs the options for your situation.

  1. Decision

    Does This Deal Actually Pencil?

    Read the guide →
  2. Decision

    Should I Buy in This Market?

    Read the guide →
The Profitable Real Estate Operator, by Builders Finance

A letter for people who run property as a business. One idea at a time on the financial side of ownership — what changed, what it means, and what an operator should do about it. Written for short-term and long-term rental owners alike.

Free. No spam. Unsubscribe anytime.