Amplified music rules in Benton County, WA — also called sound permit, PA system, or live music ordinances — set decibel limits, time-of-day restrictions, and when permits are required.
Amplified music in unincorporated Benton County must stay within WAC 173-60 property-line limits (55 dBA day, 45 dBA after 10 p.m.), and BCC 6A.15 exempts only unamplified voices between 6 a.m. and 10 p.m.
There's no countywide party permit, but the noise your speakers push across a property line is measurable and regulated. WAC 173-60 caps residential receiving property at 55 dBA by day, dropping to 45 dBA from 10 p.m. to 7 a.m. Benton County's nuisance chapter tellingly exempts only unamplified human voices, and only from 6 a.m. to 10 p.m.; amplified sound gets no such pass. This matters in wine country, where Red Mountain and Yakima Valley wineries host outdoor events, which usually run under county special-event or conditional-use approvals carrying noise conditions. Deputies respond to complaints.
Amplified noise exceeding WAC 173-60 limits or disturbing neighbors under BCC 6A.15 draws a Sheriff response, nuisance enforcement, and abatement. Permitted winery events risk conditions being tightened or pulled.
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