5 county-level rules, plus city-specific rules for 4 cities in Washington County, Oregon.
Verified from official government sources
Washington County noise control is governed by Chapter 8.24 of the Code of Ordinances. Business noise violations are handled by the Solid Waste & Recycling Program; all other noise complaints go through the Sheriff's Department. Oregon DEQ standards apply countywide.
Construction noise in unincorporated Washington County is regulated under Chapter 8.24 and Oregon DEQ rules. Nighttime construction requires a Type 1 Noise Variance Permit from the county. Oregon DEQ standards exempt construction noise during reasonable daytime hours.
Under Washington County Animal Code 6.04.260(3), it is a Class C Civil Infraction for a dog to cause continuous annoyance for 5 or more minutes out of any 15-minute period. Washington County Animal Services enforces throughout unincorporated areas and contracting cities.
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.
Amplified sound in unincorporated Washington County is regulated under the county noise ordinance and ORS 467, with outdoor amplification at public venues and events requiring a special event or temporary use permit through Land Use & Transportation. Cities within the county (Beaverton, Hillsboro, Tualatin) layer their own amplification permit systems on top.
Oregon Revised Statutes Chapter 467 — Noise Control, ORS 467.020, 467.100, and 467.990
467.020 Prohibition on emission of noise in excess of prescribed levels. Except as provided in ORS 467.131 and 467.133, no person may emit, cause the emission of, or permit the emission of noise in excess of the levels fixed therefor by the Environmental Quality Commission pursuant to ORS 467.030. [1971 c.452 §3; 1995 s.s. c.3 §40c; 1996 c.8 §2] [...] 467.100 Local regulation of noise sources; ...
4 cities in Washington County have their own noise ordinances rules. Each link goes to that city's dedicated page with code citations.
See every category we cover for Washington County — parking, noise, fences, fires, animals, pools, and more.
Washington County Ordinance Hub →