Hillsboro, OR Sign Regulations: Freeway-Facing Signs (2026)

Billboards must be located within the boundaries of the Sunset Highway and TV Highway billboard districts with no more than:1.Sixteen approved billboard permits at any 1 time for the TV Highway billboard district, which may also be tri-vision or electronic message signs. The number of billboard permits for the TV Highway billboard district may be increased by the number of billboards located on land designated industrial or commercial in the comprehensive plan, located adjacent to the Tualatin Valley Highway, and annexed to the City after September 1, 2000.2.Two approved billboard permits, or 1 if for a tri-vision or electronic message sign, at any 1 time for the Sunset Highway billboard district.B.The sign area of a billboard may not exceed 300 square feet per sign face except under HMC 11.32.280(M)(4). The sign area may be increased an additional 20% for a sign that is irregular in form and projects beyond the outer dimensions of the signboard, frame or cabinet. Each side of a double-faced billboard is a separate sign face for the purpose of sign area limitations.C.Billboards may be double-faced, allowing sign copy on 2 sides of a supporting structure, provided the 2 sides are parallel within a deviation of 10 degrees.D.Building height zoning limitations apply to billboards. Billboards on property zoned I-G Industrial-General may not exceed 45 feet in sign height.