Can this property be a vacation rental?

The jurisdiction decides it

Zoning decides nothing for short-term rentals in Napa County. The city or county line does. Three of the six jurisdictions prohibit them outright, one has no program under which one could be approved, and the two that permit them run numerical caps that are full.

For a buyer the question collapses to a single test: is the parcel inside the City of Napa, and does it already hold one of the 41 non-hosted permits? Those permits transfer with a sale. Almost nothing else in the county does.

Unincorporated county: prohibited, and enforced

Napa County Code section 18.104.410 prohibits transient commercial occupancy of dwelling units. The county adopted it in 2010, after a Planning Commission recommendation in December 2009, and it writes the restriction into its own entitlement conditions: a residence may only be rented for periods of 30 days or more.

Enforcement is not theoretical. In February 2024 the county settled a case covering two Mount Veeder and Wild Horse Valley properties for $500,000, covering unpaid transient occupancy tax, penalties, code enforcement costs and outside counsel. A 2019 settlement ran to $250,000. Accessory dwelling units are separately barred from rentals under 30 days countywide.

Nothing is pending that would change this. The agricultural preserve measures put a change behind a ballot initiative.

City of Napa: the only live path

Napa Municipal Code section 17.52.515 creates two classes. A hosted accommodation is a house the owner lives in and sleeps in while it is rented, limited to two bedrooms. A non-hosted accommodation is a whole house with no residency requirement. The ordinance caps them at 41 non-hosted and 60 hosted.

All 41 non-hosted permits are taken and the waiting list is full — 29 applicants on the fall 2026 list. Hosted permits are a different story: the city opens an application window October 1 through 15, 2026.

The transfer rule

Section 17.52.515(F)(1) states that a hosted permit shall not be transferred by any person. Subsection (F)(2) states that a non-hosted permit may be transferred by the permitted owner to a purchaser of the real property. That single sentence is what makes a permitted non-hosted house in the City of Napa a scarce and price-capitalized asset.

Three conditions travel with it, and each one can undo the transfer. It is not automatic — the buyer files a new application reviewed on the same criteria as an original. It requires a noticed public hearing, with mailing to owners within 500 feet. And both the seller’s notice of intent and the buyer’s complete application have to be filed before the existing permit expires. A permit allowed to lapse between the sale and the application is gone, and there is no route back onto a full list.

St. Helena

St. Helena Municipal Code section 17.22.200(D) caps the city at 25 short-term rental permits. One person may hold no more than one, and the code states plainly that the permit is not transferable. An applicant must have owned the home for three years before applying, and a permit holder must rent an average of at least 60 days a year or face denial at renewal.

As reported at a June 2026 Planning Commission study session, 23 permits were active, two applications were pending and 62 people were on the waiting list. Staff floated raising the cap to 50 or tying it to a percentage of the city’s housing stock, along with 300-foot spacing between rentals, staff-level approvals and annual renewals. Nothing has been adopted. Until an ordinance number exists, the cap is 25 and the permit still does not transfer.

Calistoga, Yountville and American Canyon

Calistoga prohibits short-term rentals outright under Chapter 17.34, adopted November 18, 2025. The ordinance also bars hosting platforms from completing a booking for a Calistoga property, and sets administrative fines of $1,500, $3,000 and $5,000 for successive violations within a year, with misdemeanor exposure on top and each day counted separately.

Yountville prohibits them, and goes further than most: under Chapter 8.08 it is unlawful to advertise a short-term rental unit at all, whether or not anyone stays in it.

American Canyon has no short-term rental program. Its zoning code runs 29 chapters without a short-term rental, vacation rental or home-sharing provision, and the only lodging use permitted in a residential district is a bed and breakfast inn, conditionally, in three rural residential districts. There is no permit to apply for.

Transient occupancy tax