Short-term rental permit rules in Contra Costa County, CA — also called Airbnb permits, vacation rental licenses, or STR registration — list the application steps, fees, and operating requirements for hosting.
Short-term rentals in unincorporated Contra Costa County require a permit from the Department of Conservation and Development under Ordinance No. 2020-12. ADUs may not be used as short-term rentals. A 10% Transient Occupancy Tax applies.
CCC Ordinance No. 2020-12 establishes permitting requirements for STRs in unincorporated areas. Permits are obtained through the Department of Conservation and Development at 30 Muir Road, Martinez, CA 94553. ADUs are explicitly excluded from STR use. The Tax Collector's Office oversees business licensing and collection of the 10% transient occupancy tax.
Operating without permit: $500 to $1,000/day. Safety violations: immediate suspension. TOT non-remittance: back taxes + penalties.
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See how Contra Costa County's permit requirements rules stack up against other locations.
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