Landscaping Rules in Hillsboro, OR (2026)
4 verified landscaping rules for Hillsboro, Oregon, sourced directly from the municipal code and official government pages.
Verified from official government sources
Tree Trimming
Hillsboro property owners must keep limbs, bushes and other vegetation clear of the street and sidewalk in front of their property: a minimum 8 feet above the sidewalk and 15 feet above the roadway, per Hillsboro Municipal Code § 6.16.020(B). Vegetation that blocks a driver's view, blocks pedestrians or bikers, or grows onto the right-of-way as noxious growth is a code violation, and the owner is liable for resulting injuries and the city's abatement costs.
Hillsboro Tree & Vegetation Clearance Rules
Some RestrictionsHillsboro Municipal Code § 6.16.020(A)-(E)
A. The owner or person in charge of property may not allow the limbs of any bush, tree, shrub or other vegetation to project into or across the abutting street, sidewalk, public land or public place so as to interfere with the use, to obstruct a driver's view, obstruct access for people walking or biking, or otherwise constitute a hazard to the public... B. Vegetation must be trimmed so that th...
Tree Removal & Heritage Trees
Removing a mature tree, 8+ inches in diameter or a 30-foot conifer, during a Type II or Type III development application in Hillsboro requires City review, an arborist's preservation plan, and proof the removal is necessary.
Hillsboro Protected Tree Removal Permits
Significant RestrictionsHillsboro Community Development Code § 12.50.230.B, C.1
B.Applicability. The standards of this section shall apply to all Type II and Type III development applications.C.Standards for Mature Tree Preservation. These standards apply to deciduous trees 8 inches or greater in diameter measured 4.5 feet above native grade, or coniferous trees 30 feet or taller in height.1.Development shall be sited and constructed to avoid removing or damaging mature tr...
Weed Ordinances
Hillsboro caps grass and weeds at 12 inches on every lot in the city. The Municipal Code defines anything taller as "noxious vegetation," which is automatically a public nuisance. The City Manager can order it cleared on 15 days' notice, or summarily abate it without advance notice if it poses an imminent hazard, then bill the owner.
Hillsboro Weed & Grass Height Limit
Some RestrictionsHillsboro Municipal Code § 6.16.020(C), (E); Chapter 6 Definitions ("Noxious Vegetation")
Noxious Vegetation, vegetation that poses a threat to public safety, may provide harborage for rats, mice or other vermin, is likely to become a health, fire or traffic hazard, or grass or weeds that exceed 12 inches in height. ... C. No owner or person in charge of property may allow noxious vegetation over or upon their property or the abutting public right-of-way including sidewalks, planter...
Water Restrictions
Hillsboro has no standing lawn-watering schedule; non-voluntary water curtailment activates only after the City Manager declares an emergency under HMC 2.60, with escalating fines then service shutoff for violators.
Hillsboro Water Curtailment Rules
Some RestrictionsHillsboro Municipal Code § 10.04.040(A)-(B)
A.Curtailment Plan Activation. After declaration of an emergency under HMC 2.60, non-voluntary curtailment of water usage may be required of all customers. If an emergency declaration made does not impact water supply or demands, water curtailment may not be implemented.B.Issuance of Fines. The City, acting by and through its utilities commission or its designee, may, after 1 warning and 1 form...
Looking for Washington County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Hillsboro city rules.
Landscaping Rules in Washington County →