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

Because the entire county is unincorporated (Weaverville is the unincorporated county seat, and communities such as Hayfork, Lewiston, Hyampom, Trinity Center, Junction City, Douglas City, Burnt Ranch, Big Bar, and Mad River are governed directly by the County), residents look to the Trinity County Code rather than a city code. That Code does not contain a stand-alone Title 8 or Title 9 noise-control chapter with universal residential quiet hours. Title 9 (Public Peace, Morals and Welfare) covers alarms, curfews, firearms, and weapons but has no general noise chapter. The most concrete nighttime standards in the Code appear by reference in the zoning chapters: Chapter 17.43 (Commercial Cannabis Cultivation), Section 17.43.060, ties cultivation noise to 'the noise level standards as set forth in the county general plan: 55 A-weighted decibels (dBA) from seven a.m. to seven p.m. and 50 dBA from seven p.m. to seven a.m. measured at the property line.' These General Plan figures function as the County's de facto exterior-noise framework. For everyday residential disturbances such as a loud party, the practical tools are the animal-noise rule in Section 6.04.050 (for barking and animal noise) and general public-nuisance abatement under Chapter 8.64 (Abatement of Nuisances), both enforced by the Trinity County Sheriff and County Code Enforcement. Use permits issued under Chapter 17.32 can also attach project-specific hour and noise conditions. There is no countywide ordinance that fixes a single 'quiet hours' window (for example 10 p.m. to 7 a.m.) for all residents.