Sign Regulations in Solano County, CA (2026)
3 county-level rules, plus city-specific rules for 3 cities in Solano County, California.
Verified from official government sources
Political Signs
Unincorporated Solano County allows campaign signs without a sign permit. Under Code Section 28.96.70(D), campaign signs may go up on private property with the owner's consent up to 60 days before an election, are capped at 12 sq ft in residential zones (32 sq ft in nonresidential), and must come down within 7 days after the election.
Solano County Political (Campaign) Sign Rules
Some RestrictionsSolano County Code 28.96.70(D)(2)
Campaign signs are allowed without a sign permit provided that the signs: a. May be installed on private property with the property owner's consent for up to 60 days prior to an election; b. Shall not exceed 12 square feet in area within residential zoning districts and 32 square feet in area within nonresidential zoning districts; and c. Shall be removed within seven days following the election.
Digital Billboards
Solano County bans animated and electronic message display signs outright across the unincorporated county. Zoning Code Section 28.96.40(A)(2) lists them among the fourteen sign types the county has 'deemed prohibited,' grouped with variable-intensity, blinking, and flashing displays. The single carve-out is time-and-temperature displays, which the code defines as not signs at all, so no digital billboard can be permitted in any zoning district.
Solano County Digital Billboard and Electronic Sign Ban
Heavy RestrictionsSolano County Code Sec. 28.96.40(A)(2)
A. Signs that do not further the purposes described in Section 28.96.10 are prohibited. The following types of signs have been deemed prohibited: ... 2. Animated signs, including electronic message display signs, and variable intensity, blinking, or flashing signs, except time and temperature displays (which are not considered signs);
Window Signs
Window signs in unincorporated Solano County cannot cover more than 33 percent of the total window area under Zoning Code Section 28.96.100(F)(1). The cap applies to both permanent and temporary signs posted, painted, or displayed in or on a window facing public view, and it holds in every zoning district countywide with no size exception by district or use.
Solano County Window Sign Area Limit
Some RestrictionsSolano County Code Sec. 28.96.100(F)(1)
F. Window signs. The following standards apply to window signs in all zoning districts: 1. Maximum sign area. Permanent and temporary window signs shall not occupy more than 33 percent of the total window area.
Sign Regulations by City in Solano County
3 cities in Solano County have their own sign regulations rules. Each link goes to that city's dedicated page with code citations.
All Solano County ordinances
See every category we cover for Solano County: parking, noise, fences, fires, animals, pools, and more.
Solano County Ordinance Hub →