2 county-level rules, plus city-specific rules for 1 city in Clark County, Washington.
Verified from official government sources
Clark County's sign code treats political and other noncommercial messages as on-premises signs. Any sign displaying a noncommercial (including political) message is allowed wherever an on-premises sign is permitted. Signs may not be placed in the county right-of-way without a street use permit and cannot exceed 35 feet in height.
CCC 40.310.010 (definitions)
"On-premises sign" also means a sign which contains religious, political, social and other noncommercial messages.
Portable and temporary signs, flags and banners are prohibited in unincorporated Clark County unless a temporary sign permit is approved by the responsible official. Garage-sale-type portable signs fall under this rule and may not be placed in the county right-of-way. Signs not visible from adjacent property or rights-of-way are not
CCC 40.310.010(D)(10)
Portable signs, temporary signs, flags and banners unless a temporary sign permit has been approved by the responsible official [are prohibited].
1 cities in Clark County have their own sign regulations rules. Each link goes to that city's dedicated page with code citations.
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