Washington County has no countywide leaf blower ordinance; unincorporated area rules default to the general noise provisions of WCCO Chapter 8.20 and ORS 467, with hours mirroring construction windows. Cities inside the county (Beaverton, Hillsboro, Tigard, Tualatin) apply their own local restrictions, and OAR 340-035 DEQ standards set the outer ceiling.
For unincorporated Washington County, leaf blower use is regulated as ordinary motorized yard equipment under the Sheriff-enforced noise provisions adopted through the Washington County Code of Ordinances and the Oregon DEQ framework at OAR 340-035-0035. The county has not adopted a gas-powered blower ban and Oregon has no statewide preemption or ban (unlike California AB 1346). Blower operation in residential areas is expected between roughly 7 AM and 10 PM consistent with countywide quiet hours; cities within the county narrow this window further. Beaverton (BC 5.05) and Hillsboro (HMC 8.16) treat blowers under their general noise ordinance with 7 AM-10 PM weekday limits, 8 AM-10 PM weekends. Tigard Municipal Code 7.40 uses similar hours. Commercial landscapers servicing HOA-governed subdivisions in Bethany, Cedar Hills, or Aloha must also respect CC&R quiet hours, which often start earlier than the county limit. Battery and electric blowers face only the hour restriction; gas units measured above 65 dBA at the receiving property line violate DEQ standards. Complaints for unincorporated areas route to Washington County Sheriff non-emergency (503-629-0111); city residents call their local code enforcement line.
First warning typical; subsequent citations issued as Class C violations under ORS 153.018 with fines of $115-$440. Repeat commercial offenders face enhanced fines up to $1,000. DEQ property-line exceedances can generate separate administrative penalties.
Washington County, OR
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See how Washington County's leaf blower rules rules stack up against other locations.
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