Bars and nightclubs in unincorporated King County must meet KCC 12.86 commercial-to-residential limits of 57 dBA day and 47 dBA night. WSLCB liquor license conditions often impose outdoor music curfews.
Commercial establishments with on-premise alcohol service (Washington State Liquor and Cannabis Board licenses) must meet WAC 173-60-040 Class B (commercial source) to Class A (residential receiver) limits of 57 dBA day and 47 dBA night at the residential property line. KCC 12.86 applies the same framework. Bars and nightclubs in unincorporated areas are rare since most commercial activity occurs in incorporated cities, but establishments near Vashon, Skykomish, and north Bend corridor areas must comply. WSLCB can impose conditions on liquor licenses under WAC 314-11-095 requiring premises to comply with local noise ordinances, with violations grounds for suspension. Outdoor amplified music is typically required to cease by 10 PM or earlier per conditional use permits. Recurring noise complaints can trigger a public hearing on license renewal and potentially result in denial. Security plans addressing patron noise during closing hours are required for licenses near residential areas.
Civil infraction under KCC 23.02 with fines up to 1,000 dollars per day for commercial violators. Chronic violators face WSLCB license review, conditional use permit revocation, and public nuisance abatement.
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