Glenn County, CA Sign Regulations: Freeway-Facing Signs (2026)

070 confines off-premises advertising structures, meaning billboards advertising a business or product not sold on the site where the sign stands, to four zoning districts: the Recreation Zone (RZ), the Exclusive Agricultural Zone (AE), the Agricultural Preserve Zone (AP) and the Industrial Zone (M), the districts most likely to run along Glenn County's rural highway corridors. 020 requires the property owner's written consent filed with the planning authority and, for any use already requiring a use permit, planning commission review. 050's directional-sign rules cap the number of roadside signs a single business may place along a county select-arterial road or state highway at two, reflecting the same concern about clutter along heavily traveled corridors that drives the off-premises structure limit.

Applicants must also file for a certificate of zoning compliance required under California's Outdoor Advertising Act once a sign is installed, and submit a photograph of the completed sign to the planning authority. 080, which requires signs tied to a discontinued use for more than six months to be removed or painted out.