Quiet hours in Washington County, OR — also called the noise ordinance, nighttime noise rules, or residential quiet time — define the hours during which excessive noise is prohibited.
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.
Washington County Code Chapter 8.24 addresses noise control in unincorporated areas. Oregon DEQ noise standards (OAR 340-035) set baseline residential limits at 55 dBA day and 50 dBA night. Noise complaints between 9 PM and 6 AM receive heightened attention. Incorporated cities within the county have their own noise ordinances.
First offense warning or citation. Fines typically $100 to $500. Repeat violations may be Class B violation under ORS 467.130.
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See how Washington County's quiet hours rules stack up against other locations.
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