Amplified music rules in Washington County, OR β also called sound permit, PA system, or live music ordinances β set decibel limits, time-of-day restrictions, and when permits are required.
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.
The Washington County Sheriff's Office enforces amplified music complaints in unincorporated areas using ORS 467.010-467.130 and OAR 340-035-0035 DEQ standards, which cap industrial/commercial sound at 50 dBA nighttime and 55 dBA daytime measured at the nearest noise-sensitive property line (residence, school, hospital). Outdoor amplification at wineries, farm events, and wedding venues in the Tualatin Valley wine country must be disclosed in their Type II/III Event Venue land use approval; noise conditions are written into the decision under Community Development Code Β§430-37. Temporary amplified events at county parks (Hillsboro Stadium, PCC Rock Creek area) require written authorization. Residential amplified music (home parties, live bands) is evaluated against quiet-hours limits β typically 10 PM-7 AM β and becomes a nuisance if audible beyond property lines. Beaverton requires a Sound Amplification Permit under BC 5.05.030 for outdoor events; Hillsboro issues them through HMC 8.16.040. Commercial venues along the MAX Blue Line corridor in downtown Beaverton and Hillsboro face additional conditions of approval when hosting regular live music.
Unpermitted outdoor amplification: $250-$1,000 Class B violation under ORS 153.018. Ongoing residential disturbance: Class C violation plus possible abatement. Event permit non-compliance: revocation and deposit forfeiture.
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