Construction hours in Solano County, CA — sometimes called construction noise rules or contractor work-hour ordinances — set when contractors can run power tools, hammers, and heavy equipment.
Unincorporated Solano County has no dedicated construction-hours ordinance. Construction noise is governed indirectly by Solano County Code §21-10 (Disturbing the Peace), which makes any non-agricultural noise exceeding 65 dBA at the property line between 10:00 p.m. and 6:00 a.m. a per se disturbance. In practice construction work is therefore limited to roughly 6:00 a.m.–10:00 p.m. Cities set their own stricter limits.
Solano County Code Chapter 21 (Public Offenses) contains no separate construction-hours section. The county relies on the general nighttime noise rule in §21-10: it is unlawful to maliciously and willfully disturb the peace by loud or unusual noise, which expressly includes any non-agricultural noise that exceeds 65 dBA at the property line between 10:00 p.m. and 6:00 a.m. (Ord. No. 1830, §1). Building Safety Services issues construction permits without separate time-of-day conditions, but construction that violates §21-10 (typically powered equipment running before 6:00 a.m. or after 10:00 p.m. in residential areas) is enforceable. Cal/OSHA workplace noise rules (Title 8 CCR §5096 et seq.) apply on the jobsite. Cities within Solano County (Vallejo, Fairfield, Vacaville, Suisun City, Benicia, Dixon, Rio Vista) set their own construction-hours limits, often 7:00 a.m.–7:00 p.m. weekdays.
Construction noise that violates §21-10 (e.g., framing or grading before 6:00 a.m. or after 10:00 p.m.) is a misdemeanor disturbance of the peace. The Sheriff or Resource Management Code Compliance can issue citations and abatement orders. Repeated violations on a permitted job may trigger stop-work orders from Building Safety Services.
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See how Solano County's construction hours rules stack up against other locations.
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