Lassen County, CA Sign Regulations: Political Signs (2026)

For unincorporated Lassen County, no dedicated political-sign section was located in Title 18; political and other temporary signs on private property fall under the county's general sign provisions in Chapter 18.102. Statewide, the binding rules for campaign signs near roadways come from California's Outdoor Advertising Act, Business and Professions Code section 5405.3. That law permits 'temporary political signs' provided each sign is no larger than 32 square feet, is not placed within the right-of-way of any highway, and is not placed within 660 feet of, and visible from, a landscaped freeway. The sign may be displayed no sooner than 90 days before the election and must be removed within 10 days after the election, and a Statement of Responsibility identifying who will remove the sign must be filed with Caltrans. Caltrans is authorized to remove unauthorized political signs from state right-of-way and bill the responsible party. On purely private property away from state highways, content-based limits on political speech are constitutionally limited, but the size, placement, and number rules in the county's general sign ordinance still apply. Confirm any local permit or size limits with Lassen County Planning and Building Services.