Los Angeles Municipal Code Chapter XI (Noise Regulation) sets zone-based decibel limits ranging from 45 dBA in residential zones at night to 75 dBA in industrial zones.
LAMC Section 114.01 establishes a zone-based dBA table for maximum permissible sound levels at receiving property lines. Residential zones are limited to 45 dBA at night (10pm-7am) and 55 dBA during the day. Commercial zones allow 60 dBA night and 65 dBA day. Industrial zones permit 65-75 dBA. Los Angeles uses an ambient-plus-5-dBA standard, meaning any sound exceeding the ambient baseline by 5 dBA or more is presumed to violate the code. Plainly audible sounds at the property line during restricted hours may also trigger enforcement regardless of measured level. Violations are enforced by LAPD and the Bureau of Street Services Investigation and Enforcement Division.
Contact your local code enforcement office for specific penalty information.
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Side-by-side rule comparisons with other cities in Los Angeles County.
See how other cities in Los Angeles County handle decibel limits.
See how Los Angeles's decibel limits rules stack up against other locations.
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