How a projection should be built.

Scope Incorporated City of Palm Springs · Sources read 2026-09-19 · Contains no figures of its own

Eligibility comes before arithmetic

The City of Palm Springs states that an application for a property in an Organized Neighborhood at 20% or higher vacation-rental-to-residential-household percentage will be returned, with a wait-list option. It also states that a Vacation Rental Registration Certificate is a privilege, not a right, and that Chapter 5.25 limits vacation rentals and homeshares to single-family dwelling units and prohibits them in apartments. Any projection built before those checks is describing a hypothetical house.

Ask for the Organized Neighborhood name, the current percentage and the date it was read. The City publishes the table and the ONE-PS web map and updates them weekly, so a stale check is not a check.

The assumptions that must be visible

A projection is a set of assumptions with a total at the bottom. If you cannot see the assumptions, you cannot argue with the total. At minimum, the following should be stated rather than implied.

• Which guest story the home is being priced for, and why that one.
• How many nights the owner has reserved, and whether those sit in strong or weak weeks.
• What minimum-stay rules are assumed, and who can change them later.
• Whether the figure is gross booking value or net of channel commission, cleaning, management and taxes.
• Which comparable properties informed it, how similar they genuinely are, and over what period.
• What happens to the total if the pool is out of service for two weeks in July.

Local cost lines a Palm Springs model cannot omit

Several costs here are not optional and not small. Pool service, heating and water run all year. Cooling load in summer is a real line, not a rounding error. The City's certificate file includes a pool certification form and a rental certificate safety inspection form, so safety and inspection work recurs. Transient Occupancy Tax under PSMC Chapter 3.24 is filed monthly, including in months with no guests, which is an administrative cost as well as a tax one.

There is also a per-stay obligation that scales with booking volume: a Contract Summary is required for each guest stay of 28 consecutive days or less, filed through the online business center, and it cannot be submitted retroactively. A model that assumes a high number of short stays is also assuming a high number of filings. Someone has to do them, on time.

Seasonality, honestly described

The design calendar concentrates in the cooler months. Modernism Week publishes its fall edition as October 15 to 18, 2026 and runs architecture tours seasonally October through May. Summer is a different product built around the pool and the indoors. A projection that flattens that into a single annual average is hiding the shape that matters most to your decision, because the shape is what determines whether your own preferred weeks are expensive ones.

Two things a projection is not

It is not a guarantee, and it is not an approval. Nothing on this public site calculates a property-specific result, and no figure here should be read as one. The worksheets in Owner Tools are deliberately built the other way round: you supply the inputs, every assumption is labelled as yours or illustrative, and the output is a planning aid. Start with the owner-use worksheet for your weeks and the amenity break-even worksheet for any upgrade you are weighing.