7 Red Flags in a Short-Term Rental Revenue Projection

A revenue projection is a scenario. It is not a promise, it is not an appraisal, and it is not a number anyone owes you if it doesn't happen. Every projection you will be handed — by a listing agent, a data tool, a manager pitching for the business, or by me — is a set of assumptions dressed as a result.

That is fine, as long as you treat it that way. Here are the seven things that most often make a projection wrong, and what to ask when you see them.

What you'll learn

• The seven failure modes that inflate STR projections
• The questions that expose each one
• How to convert somebody else's projection into your own three scenarios

1. The comp set is flattering, not comparable

The fastest way to inflate a projection is to choose good comps. A projection built on the top performers in a market — the ones with hot tubs, professional design, three years of five-star reviews, and a superhost badge — tells you the ceiling, not your first year.

Ask: Which specific listings are in this comp set, and what is their bedroom count, amenity tier, review count, and distance from the same demand driver? Then look at the median of the whole comparable set, not the average of the winners.

2. Platform fees and lodging taxes are missing

Owners consistently underestimate what comes off the top. Depending on your platform, fee structure, and jurisdiction, gross booking value and what actually lands in your account can be meaningfully different once host service fees, payment processing, and local lodging or occupancy taxes are handled.

Ask: Is this number gross booking value or net owner revenue? Which taxes does the platform collect and remit here, and which do I file myself? Lodging tax varies by city and county, and it is not always collected for you.

3. The expense side was written after the revenue side

If the projection leads with a revenue figure and lists expenses as a single "operating costs" percentage, it is marketing, not underwriting. Build the expense side first: cleaning, supplies, utilities, internet, insurance (short-term rental insurance, not a standard homeowner's policy), permits and licensing, lodging taxes, software, management or co-hosting, maintenance reserve, capital reserve, HOA, snow or landscaping, and debt service.

Ask: Show me every line item, not a percentage.

4. The furnishing and design budget is thin

Under-designing and under-amenitizing are quiet killers. The property that "should do fine" and doesn't is very often the one that was furnished on whatever was left after closing. Beds, linens, lighting, seating capacity that matches sleeping capacity, and photography are not decoration — they are the product.

Ask: What furnishing budget does this projection assume, and which amenities are baked into the ADR? Then check whether every assumed amenity fits your guest, differentiates you, survives turnovers, and pays back its cleaning burden. An eighty-amenity arms race is not a strategy; three amenities your actual guest wants is.

5. The property has an obvious short-term rental flaw

Some flaws no projection can fix: no parking in a drive-to market, a layout with one usable bedroom advertised as three, an approach road that scares winter guests, a shared wall with a neighbor who hates the idea, an HOA with a rental cap, or a floor plan where the only bathroom is off the primary bedroom.

Ask: If I were a guest reading only the reviews for this property, what would I complain about?

6. The projection is built on today's rules and today's rates

Regulation is the biggest single risk to a short-term rental, and it moves. So do mortgage rates and days-on-market. A projection built on the current ordinance and the current rate sheet is fine — as long as it is labeled with an as-of date and you have asked where the local policy is heading: permit caps, enforcement funding, proposed ordinances, HOA amendments, and primary-residence requirements.

Ask: What is the permit situation today, what is pending, and what happened the last time this jurisdiction revisited it?

7. The person handing you the projection is not an STR operator

This one underlies several of the others. A very good suburban residential agent is not automatically qualified to advise on a mountain-town or vacation-market purchase. Those are different products with different buyers, different seasonality, different insurance, and different regulatory exposure.

Turn their projection into your three scenarios

Take whatever number you were handed and rebuild it:

Buy on the conservative case. If the deal only works on the upside case, the deal does not work.

Underwriting a specific property? Email go@vacohost.com with the address and the projection you were given, and we will tell you which assumptions we would challenge.

FAQ

Q Are short-term rental data tools accurate? A: They are useful for direction and comp discovery and unreliable as a single source of truth, especially in thin markets with few comparable listings. Use them to build a comp set you then evaluate yourself.

Q How much should I discount a first-year projection? A: There is no universal number, but a new listing with no reviews competes at a disadvantage against established comps for its first season. Model a first-year haircut explicitly rather than assuming you will step straight into comp-set performance.

Q Should I trust a projection from the manager who wants to run the property? A: Read it, then verify it independently. A manager who shows you their assumptions and their comp set is being useful. A manager who shows you only a headline number, or guarantees it, is selling.