Short-term rental permit rules in Castro Valley, CA — also called Airbnb permits, vacation rental licenses, or STR registration — list the application steps, fees, and operating requirements for hosting.
Castro Valley STRs operate under Alameda County rules. There is no dedicated STR ordinance, but Chapter 6.64 (Rental Housing Registry) requires registration of rental units in the unincorporated area, and operators must obtain a Transient Occupancy Tax certificate before listing.
Unincorporated Alameda County (which includes Castro Valley) adopted Chapter 6.64 establishing a Rental Housing Registry covering 'transitory residential units in hotels, motels, inns, and vacation rentals.' Owners must register annually and pay a registration fee. Separately, the County's Transient Occupancy Tax (Chapter 3.12) applies to any rental of 30 days or less and requires a TOT Registration Certificate before any guest is booked. ADUs (accessory dwelling units) cannot be used as short-term rentals under 30 days per Alameda County zoning amendments to encourage long-term housing. Code Enforcement is staffing up to enforce registry compliance.
Operating an unregistered STR is a code violation subject to administrative citation ($100-$500). Unremitted TOT becomes a tax lien plus interest and a 10% penalty. Renting an ADU short-term violates the zoning code and can trigger an NPO (Neighborhood Preservation Ordinance) order under Ch. 6.65.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Castro Valley, CA
Alameda County Code §6.60.050 prohibits repairing, rebuilding, modifying or testing vehicles in residential areas between 7 p.m. and 7 a.m. if it produces so...
Castro Valley, CA
Alameda County Code §6.60.050 limits use of electric or gas leaf blowers, sweepers, vacuums, mowers, trimmers, edgers and hedgers in residential areas to 7 a...
Castro Valley, CA
Alameda County Code §5.08.060 makes it unlawful for any person owning, keeping, or having custody of a dog or other animal to knowingly permit or suffer that...
Castro Valley, CA
Alameda County Code §6.60.080 exempts construction activity from Chapter 6.60 only if it occurs between 7 a.m.-7 p.m. on weekdays and 8 a.m.-5 p.m. on Saturd...
Castro Valley, CA
Castro Valley is unincorporated and operates under Alameda County Code Chapter 6.60 (Noise). §6.60.050 makes it a violation to operate any sound-producing de...
Castro Valley, CA
Heavy commercial vehicles - generally over 10,000 lbs GVW or 22 feet long - cannot be parked overnight on Castro Valley residential streets, and cannot be pa...
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