Construction hours in Costa Mesa, CA — sometimes called construction noise rules or contractor work-hour ordinances — set when contractors can run power tools, hammers, and heavy equipment.
Costa Mesa limits construction activity to 7 AM to 8 PM under CMMC Section 13-279(b). The development services director may grant temporary waivers for work outside these hours upon considering impacts to nearby communities.
Under CMMC Section 13-279(b), construction activities including equipment operation, vehicle arrival, and construction-related noise are permitted from 7 AM to 8 PM. Construction outside these hours requires a temporary waiver approved by the development services director or designee. When evaluating waiver requests, the director considers unusual circumstances requiring construction outside permitted hours and short-term impacts on nearby communities. All construction must also comply with the exterior noise standards in Section 13-280 at the property line of affected residential properties. Required building permits must be obtained from the appropriate city departments before construction begins.
Construction outside permitted hours without a waiver is a violation of the noise control ordinance, subject to administrative fines and potential stop-work orders.
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Side-by-side rule comparisons with other cities in Orange County.
See how other cities in Orange County handle construction hours.
See how Costa Mesa's construction hours rules stack up against other locations.
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