Riverside County, CA Noise Ordinances: Construction Hours (2026)
Construction hours in Riverside County, CA, sometimes called construction noise rules or contractor work-hour ordinances, set when contractors can run power tools, hammers, and heavy equipment.
Key Facts
- Summer curfew (Jun-Sep)
- No work 6 p.m.-6 a.m.
- Off-season curfew (Oct-May)
- No work 6 p.m.-7 a.m.
- Full exemption distance
- 1/4 mile or more from a dwelling
- Enforcement
- Sheriff and code enforcement
- Exception process
- Building & safety director, no hearing
Summary
Riverside County exempts construction noise from its general sound limits only if work stays outside curfew hours: 6 PM to 6 AM in summer, 6 PM to 7 AM the rest of the year, for sites within a quarter mile of a home.
H.Private construction projects located one-quarter of a mile or more from an inhabited dwelling;I.Private construction projects located within one-quarter of a mile from an inhabited dwelling, provided that:1.Construction does not occur between the hours of six p.m. and six a.m. during the months of June through September, and2.Construction does not occur between the hours of six p.m. and seven a.m. during the months of October through May;
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 84 Update 1).
Full Breakdown
Riverside County Code § 9.52.020 exempts private construction sites a quarter mile or more from an inhabited dwelling from the noise chapter entirely. Closer sites are exempt only if construction stops between 6 p.m. and 6 a.m. from June through September, and between 6 p.m. and 7 a.m. from October through May. Work outside those windows loses the exemption and falls under the county's general sound-level standards (§ 9.52.040). Contractors needing relief can apply to the director of building and safety for a construction-related exception under § 9.52.070, decided without a public hearing.
Violations & Fines
Working equipment past the curfew forfeits the construction noise exemption; the sheriff or code enforcement can then cite the project under the general sound-level standards of § 9.52.040, prosecuted per § 9.52.100.
Frequently Asked Questions
Can a contractor run equipment overnight in unincorporated Riverside County?
What happens if construction runs past the curfew?
Sources & Official References
Other rules in Riverside County
How Riverside County compares: Cities with the Strictest Construction Hours·California rules heatmap·Compare Riverside County to another location·View the California noise ordinances overview
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