Sign Regulations in Mendocino County, CA (2026)
2 rules for unincorporated Mendocino County, California.
Verified from official government sources
Political Signs
In Mendocino County's Coastal Zone, a political sign tied to a scheduled election cannot go up more than 90 days before the vote and must come down within 10 days after it under Mendocino County Code Section 20.476.030(D). Each sign face is capped at 32 square feet, and the sign needs no Coastal Development Permit.
Mendocino County Political Sign Rules
Some RestrictionsMendocino County Code § 20.476.030(D)
The following temporary on-site signs are permitted without the necessity of obtaining a Coastal Development Permit:...(D)Political signs pertaining to a scheduled election subject to the following standards:(1)The sign cannot be put up more than ninety (90) days prior to the election.(2)The sign must be removed within ten (10) days after the election.(3)The sign cannot exceed thirty-two (32) s...
Freeway-Facing Signs
No advertising sign or structure may be placed to be viewed primarily from a landscaped stretch of State Route 1 between Robinson Creek and Forsythe Creek. Violating displays must come down within three years of the landscaping or the ordinance's effective date.
Mendocino County Landscaped Freeway Sign Ban
Significant RestrictionsMendocino County Code Sec. 15.24.030 (Advertising Display Adjacent to Landscaped Freeways)
No advertising displays shall be placed or maintained on property adjacent to a section of freeway which has been, or hereafter may be, landscaped as defined herein, if the advertising display is designed to be viewed primarily by persons traveling on such landscaped section of a freeway.
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