LA County Code Title 13.36 declares loud or unruly gatherings a public nuisance and lets the Sheriff bill the host, property owner, and on-site adults for response and abatement costs after a written warning. The rule mirrors LA City Section 41.40 and layers atop Title 12 noise limits.
Under Title 13.36 of the LA County Code, a gathering of two or more people becomes an unruly gathering when it produces excessive noise, traffic, alcohol service to minors, fights, vandalism, or other public-safety problems requiring law enforcement response. After an initial warning, any second response within a defined period can trigger cost recovery against the host, the property owner, and any adult resident or tenant present. Recoverable costs include sworn-deputy time, supervisor time, fire and EMS response, and abatement. Noise itself is also enforceable under Title 12 decibel limits and quiet-hour rules. The framework parallels LA City's social host ordinance at Municipal Code Section 41.40.
Cost-recovery bills routinely run $500 to several thousand dollars per response. Hosts can also face misdemeanor charges for furnishing alcohol to minors under California Business and Professions Code 25658, plus civil liability for any injuries.
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