Garage & Yard Sales in Contra Costa County, CA (2026)

2 county-level rules, plus city-specific rules for 8 cities in Contra Costa County, California.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Contra Costa County. If you live within an incorporated city, that city's own rules apply — see the city list below.

Garage Sale Permits

Unincorporated Contra Costa County does not require a permit for residential garage sales. No registration fee or application — residents may hold sales on their own property with basic sign and parking compliance.

Garage Sales: Permits

Few Restrictions

Full ordinance details →Official source ↗

Frequency Limits

No formal frequency cap on garage sales in unincorporated CCC, but repeated sales may trigger classification as home business or unlicensed retail under Zoning Code Title 88. Industry norm: 2-4 per year per address.