Sign Regulations in San Diego County, CA (2026)

3 county-level rules, plus city-specific rules for 9 cities in San Diego County, California.

Verified from official government sources

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

Political Signs

Temporary political signs in unincorporated San Diego County are primarily governed by California state law (Bus. & Prof. Code 5405.3), which allows signs up to 32 sq ft, placed no sooner than 90 days before an election and removed within 10 days after, and prohibits them in any highway right-of-way.

San Diego County Political Sign Rules

Few Restrictions

California Civil Code § 4710 (HOA Davis-Stirling Act — protection for noncommercial signs, flags, and banners on member property)

rticle 1 added by Stats. 2012, Ch. 180, Sec. 2. ) 4710. (a) The governing documents may not prohibit posting or displaying of noncommercial signs, posters, flags, or banners on or in a member’s separate interest, except as required for the protection of public health or safety or if the posting or display would violate a local, state, or federal law.

Full ordinance details →Official source ↗

Garage Sale Signs

Garage sales in unincorporated San Diego County are limited to three consecutive days, no more than four per year per property (Zoning Ordinance Section 6156.gg). The County has no special garage-sale-sign rule; temporary signs fall under the general sign regulations and off-premise directional signs are limited to 4 sq ft and not allowed in the right-of-way.

San Diego County Garage Sale and Garage Sale Sign Rules

Some Restrictions

Full ordinance details →Official source ↗

Holiday Displays

Holiday displays on private property in unincorporated San Diego County are generally permitted as temporary decorations. The County does not have specific restrictions on residential holiday displays. Fire safety rules apply to outdoor decorations, especially in wildfire zones.