Construction hours in Maricopa County, AZ — sometimes called construction noise rules or contractor work-hour ordinances — set when contractors can run power tools, hammers, and heavy equipment.
Maricopa County has no construction hour restrictions for unincorporated areas. Arizona's extreme heat often necessitates early-morning construction. HOA CC&Rs may set private construction windows. Only ARS §13-2916 provides recourse for extreme cases.
Maricopa County cannot impose construction hour restrictions in unincorporated territory. Arizona counties lack general regulatory authority over construction timing. In the Phoenix metro's extreme summer heat (regularly exceeding 110°F), construction crews commonly begin work at 5 or 6 AM to avoid dangerous afternoon temperatures. HOA CC&Rs in planned communities are the primary control mechanism, often restricting construction to 7 AM to 6 PM. Maricopa County Planning and Development issues building permits but does not regulate work hours. Dust control during construction is regulated by MCAQD Rule 310.
No county construction hour violations. ARS §13-2916 for extreme noise: Class 1 misdemeanor, up to $2,500. MCAQD dust violations: fines up to $10,000/day.
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See how Maricopa County's construction hours rules stack up against other locations.
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