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

Trinity County is a remote, heavily forested rural county with no incorporated cities, so there is no city construction-hours code anywhere in the county - the Trinity County Code governs throughout. That Code does not contain a single ordinance setting blanket construction hours (such as 7 a.m. to 6 p.m. weekdays) for all building activity. Instead, hour restrictions appear in specific chapters. Chapter 17.30B (Provisions for Home Occupations and Cottage Industry), Section 17.30B.050(G), limits the primary hours of operation for home-based businesses to 'seven a.m. to eight p.m. Monday through Saturday, and eight a.m. to five p.m. Sundays,' with no noticeable noise from the operation outside those hours unless a use permit conditions otherwise. The zoning performance-standard sections also restrict certain operations: concrete batch plants and rock-screening operations are limited to 'seven a.m. to seven p.m. Monday through Saturday' under Chapter 17.30, and various camping/temporary-use provisions in Chapter 17.30 bar 'generators or other noise generating devices' between 9 p.m. and 7 a.m. on weekdays and 9 p.m. and 9 a.m. on weekends. For cannabis cultivation, Section 17.43.060 bars generators between 10 p.m. and 7 a.m. For ordinary residential or commercial construction, the County relies on the discretionary conditions of building, grading (Chapter 15.24), and use permits (Chapter 17.32), plus general nuisance abatement (Chapter 8.64), rather than a fixed countywide construction-curfew. Emergency and utility work is treated separately. Owners undertaking routine daytime building work generally face no specific County hour limit unless a permit condition or the home-occupation rule applies.