Short-Term Rental Regulations
in Castro Valley, CA

Airbnb listings are allowed in Castro Valley, CA, but with restrictions. All rental housing units, including short-term vacation rentals and individual rooms, must be registered in the County's Rental Housing Registry. Owners must designate a contact representative and update registration annually. Notably, ADUs and JADUs are generally prohibited from being rented for terms of less than 30 days. A permit is required before you can host. These rules apply to all short-term rental platforms (Airbnb, Vrbo, Booking.com, etc.) — not just Airbnb specifically. See the official source linked on this page for full requirements. Last verified 2026-05-14.

All rental housing units, including short-term vacation rentals and individual rooms, must be registered in the County's Rental Housing Registry. Owners must designate a contact representative and update registration annually. Notably, ADUs and JADUs are generally prohibited from being rented for terms of less than 30 days.

Yes, a permit is required to operate a short-term rental in Castro Valley. 1) Submit a completed registration form to the County’s Housing & Community Development Department (HCD) in the prescribed format. 2) Pay the annual registration fee and obtain a county business license if required. 3) Designate a Contact Representative and update the registration annually by July 1.

1) Submit a completed registration form to the County’s Housing & Community Development Department (HCD) in the prescribed format. 2) Pay the annual registration fee and obtain a county business license if required. 3) Designate a Contact Representative and update the registration annually by July 1.

Vrbo is permitted in Castro Valley, CA under the same restrictions that apply to Airbnb — local rules govern the rental itself, not the specific platform. You must hold a valid permit before hosting on Vrbo. Last verified 2026-05-14.

Short-term rental hosts in Castro Valley are typically responsible for lodging, occupancy, and applicable sales taxes — these usually apply even where hosting is allowed without a permit. Rates and remittance rules vary by jurisdiction (state, county, and city can each levy a share); confirm the current rates with the official source linked on this page. Platforms such as Airbnb and Vrbo collect some taxes automatically, but the host remains liable for any not collected on their behalf.

We are not currently tracking any recent short-term rental ordinance changes for Castro Valley. STR rules change frequently — verify the current requirements with the city or county before listing, using the official source linked on this page.