Calaveras County, CA Noise Ordinances: Quiet Hours (2026)

Calaveras County has no incorporated 'curfew' style quiet hour with a flat decibel cap, but Chapter 9.02 of the County Code (Noise Control) builds a quieter nighttime period into its core standard. Under Section 9.02.030, a sound becomes an unlawful 'noise disturbance' when it exceeds the background sound level by at least 10 dBA during daytime hours, defined as 7:00 a.m. to 10:00 p.m., or by at least 5 dBA during nighttime hours, defined as 10:00 p.m. to 7:00 a.m., measured at or within the real property line of the receiving property. The tighter 5 dBA nighttime margin makes the same activity far more likely to violate the ordinance after 10 p.m. Separately, Section 9.02.050 prohibits noise from a party between 10:00 p.m. and 8:00 a.m. that violates Section 9.02.030, and bars amplified loudspeaker or public-address sound across a residential property line during the same 10 p.m. to 8 a.m. window. The ordinance applies only to the unincorporated county; the City of Angels Camp, the county's only incorporated city, sets its own rules. Enforcement is complaint-driven through the Sheriff, who is designated the County Noise Control Officer.