El Cerrito, CA Noise Ordinances: Amplified Music & Events (2026)

Contra Costa County does not have a comprehensive, county-wide noise ordinance regulating amplified music in residential areas. The Contra Costa County Ordinance Code does not have a specific noise ordinance, but it addresses impacts that are due to construction noise under the Grading Ordinance Section 716-8.1008, stating that operations shall be controlled to prevent nuisances to public and private ownerships because of dust, drainage, removal of natural support of land and structures, encroachment, noise, and/or vibration. The County has, however, adopted a Temporary Events Ordinance which "limits noise for larger outdoor or partially outdoor gatherings" — including a prohibition on unpermitted commercial temporary events. As stated by the Department of Conservation and Development in its June 14, 2024 memo to Municipal Advisory Councils, the County's regulations are not comprehensive and there are gaps in coverage; for example, outdoor or partially outdoor events or parties attended by 74 people or less in residential areas are not subject to the same limitations. For amplified sound emanating from vehicles, California Vehicle Code § 27007 prohibits any sound amplification system that can be heard outside the vehicle from 50 or more feet when the vehicle is being operated upon a highway, unless that system is being operated to request assistance or warn of a hazardous situation.