Sign Regulations in Hillsboro, OR (2026)
4 verified sign regulations for Hillsboro, Oregon, sourced directly from the municipal code and official government pages.
Verified from official government sources
Garage Sale Signs
Hillsboro allows signs advertising a household, yard or garage sale only on the property where the sale is held; HMC 5.24.030(A) bars off-site signs such as street-corner or utility-pole postings. Radio, TV, newspaper and internet advertising for the same sale face no similar restriction under HMC 5.24.030(B).
Hillsboro Garage Sale Sign Placement Rules
Light RestrictionsHillsboro Municipal Code §§ 5.24.030, 5.24.040(A)
5.24.030. - Advertising. A.Signs advertising such household, yard and garage sales may only be posted on the property of the owner or person in charge of the property upon which the sale will occur.B.Advertising on radio, TV, newspaper, internet and similar mediums is allowed. 5.24.040. - Violations. A.Owners or persons in charge of property that are presumed to be in violation of HMC 5.24.0...
Digital Billboards
In Hillsboro, Oregon (Washington County), electronic message and tri-vision billboards can't change copy faster than every 8 seconds and must stay under 8,000 nits by day, 1,000 nits after dusk.
Hillsboro Digital Billboard Brightness Rules
Some RestrictionsHillsboro Municipal Code § 11.32.230
Electronic message and tri-vision signs must: A. Have a rate of change from 1 sign copy to the next no more frequent than 8 seconds and the change must be accomplished in no more than 4 seconds or be turned off during the change interval; ... D. Not be illuminated to a degree of brightness that is greater than necessary for adequate visibility or exceed 8,000 nits or equivalent candelas during ...
Window Signs
Hillsboro limits non-illuminated interior signs facing a sidewalk or street to covering no more than 25% of an individual window before a sign permit is required, under the city's sign code.
Hillsboro Window Sign Coverage Limit
Some RestrictionsHillsboro Municipal Code § 11.32.080(B)(11)
Non-illuminated interior signs in non-residential sign districts designed primarily to be viewed from a sidewalk or street, provided the sign does not obscure more than 25% of an individual window;12.Illuminated interior signs in those sign districts under HMC 11.32.100(B)(2) through (7) and are designed primarily to be viewed from a sidewalk or street, provided the sign area is less than 4 squ...
Freeway-Facing Signs
Hillsboro, Oregon (Washington County) caps freeway-facing billboards along the Sunset Highway (US 26) corridor at just two permits citywide, with height capped at 45 feet on bordering industrial land.
Hillsboro Freeway Billboard District Caps
Significant RestrictionsHillsboro Municipal Code § 11.32.150
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...
Looking for Washington County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Hillsboro city rules.
Sign Regulations in Washington County →