Compton Decibel Limits Rules (2026): What You Need to Know

Compton's exterior noise standards under Article 10 of Title 9 set objective, measurable limits by zoning classification. Residential zones — which cover the majority of Compton's land area — are subject to a 55 dBA exterior noise limit during daytime hours (7 AM to 10 PM) and a 45 dBA limit during nighttime hours (10 PM to 7 AM). Commercial zones are permitted up to 65 dBA at all hours, and industrial zones up to 70 dBA. When the noise source is in a zone with a higher limit but the receiving property is in a zone with a lower limit, the receiving property's more restrictive limit governs.

All decibel measurements are conducted using a Type I or Type II sound level meter set to the A-weighting network and slow meter response, as prescribed by the American National Standards Institute (ANSI). Measurements are taken at the property line of the affected (receiving) parcel. The standards primarily target fixed mechanical equipment — air conditioning units, generators, pool and spa pumps, commercial refrigeration, and exhaust fans are the most common subjects of enforcement actions.

Compton's urban density and mix of residential, commercial, and light industrial uses create frequent boundary conflicts. Many older residential neighborhoods directly abut commercial corridors along Compton Boulevard, Long Beach Boulevard, and Rosecrans Avenue, meaning the cross-zone measurement rule is frequently invoked. The city's Code Enforcement Division handles ongoing equipment noise complaints, while the LA County Sheriff's Department responds to acute noise disturbances. Residents can contact Code Enforcement at (310) 605-5532 or the Sheriff's Compton Station at (310) 605-6500.