2 county-level rules, plus city-specific rules for 2 cities in Sonoma County, California.
Verified from official government sources
In unincorporated Sonoma County, campaign signs may be erected no earlier than 90 days before an election and must be removed within 20 days after the close of the campaign, per the County Registrar's campaign guide and Chapter 26 Article 84 design standards. State law (B&P Code 5405.3) caps temporary political signs at 32 sq ft.
Garage and yard sale signs in unincorporated Sonoma County are temporary signs governed by Article 84 (Sign Regulations) of the County Zoning Ordinance, Chapter 26 (Secs. 26-84 series). Signs must follow Article 84 size and placement standards and may not be posted in public rights-of-way or on utility poles.
2 cities in Sonoma County have their own sign regulations rules. Each link goes to that city's dedicated page with code citations.
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