2 county-level rules, plus city-specific rules for 1 city in Snohomish County, Washington.
Verified from official government sources
In unincorporated Snohomish County political signs are exempt from zone bans and number/square-footage limits, but they must not obstruct driver sight distance, must meet right-of-way rules, and must obey height and lighting limits.
SCC 30.27.070
No section of this code prohibiting the use of signs within specified zones, or regulating the total number or square footage of signs on a property, shall apply to political signs... Political signs shall comply with any provision of this title regulating the height of signs or the use of moving signs or lighted signs.
In unincorporated Snohomish County a single-family residence may display one unlighted name sign up to two square feet per face. Real-estate signs advertising sale or lease may be up to 15 square feet per building site under SCC 30.27.010.
SCC 30.27.020; SCC 30.27.010
A residence may display one unlighted single- or double-faced sign, not to exceed two square feet in area per face, containing the name of the occupant... signs not exceeding 15 square feet in area for each building site may be displayed for the purpose of advertising the sale or lease of the real property upon which displayed.
1 cities in Snohomish County have their own sign regulations rules. Each link goes to that city's dedicated page with code citations.
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