Construction hours in San Bernardino County, CA — sometimes called construction noise rules or contractor work-hour ordinances — set when contractors can run power tools, hammers, and heavy equipment.
Construction in unincorporated San Bernardino County is permitted 7 AM to 7 PM Monday through Saturday under Development Code §83.01.080. No construction on Sundays or federal holidays.
Development Code §83.01.080 limits temporary construction, maintenance, repair, and demolition activities to 7 AM–7 PM, Monday through Saturday. Construction is prohibited on Sundays and federal holidays. Given the county's extreme climate diversity — from desert floor temperatures exceeding 115°F in summer to mountain communities at 6,000–8,000 feet elevation — the 7 AM start time is particularly important for worker safety in desert communities. Mountain communities like Big Bear, Lake Arrowhead, and Crestline may have additional seasonal considerations during winter months. Enforcement is handled by County Code Enforcement.
Construction outside permitted hours: citation under §83.01.080. Maximum penalty: 90 days jail and/or $400 fine.
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See how San Bernardino County's construction hours rules stack up against other locations.
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