Maricopa County, AZ Noise Ordinances: Quiet Hours (2026)
Quiet hours in Maricopa County, AZ, also called the noise ordinance, nighttime noise rules, or residential quiet time, define the hours during which excessive noise is prohibited.
Key Facts
- Governing rule
- Maricopa County Ordinance P-23
- Applies to
- Unincorporated county only
- Audibility trigger
- Within 500 feet, closed structures
- Maintenance noise hours
- 5:00 a.m. to 9:00 p.m.
- Max fine
- $750 for third offense
Summary
Maricopa County Ordinance P-23 bans noise that disturbs a neighborhood's peace and quiet if it's audible inside closed homes within 500 feet of the source, day or night, and confines routine property-maintenance noise to 5 a.m.-9 p.m.
It shall be unlawful for any person to cause, or for any person in possession of property to allow to originate from the property, any noise which disturbs the peace or quiet of any neighborhood if such noise can be heard from within closed residential structures located within 500 feet of the boundary of the property from which such noise emanates.
Full Breakdown
Ordinance P-23, adopted by the Board of Supervisors in 2006, applies only in unincorporated Maricopa County: it does not reach Phoenix, Mesa, Scottsdale, or any other incorporated city, each of which enforces its own noise code. Under the ordinance's Public Disturbances provision, it is unlawful at any hour to cause noise that disturbs the peace or quiet of a neighborhood if it can be heard inside closed residential structures within 500 feet of the source; the ban excludes noise from a business operating during its normal hours. A separate exemption limits routine property-maintenance noise to the hours of 5:00 a.m. to 9:00 p.m. The Sheriff's Office enforces the ordinance.
Violations & Fines
First-offense violations are misdemeanors punishable by a fine of up to $300; $500 for a second offense; $750 for a third or later offense; each day the noise continues is a separate offense.
Frequently Asked Questions
Does Maricopa County set one blanket nighttime curfew hour?
Does this ordinance apply inside Phoenix or Mesa?
What hours can I run a leaf blower or mower?
Sources & Official References
Other rules in Maricopa County
How Maricopa County compares: Cities with the Strictest Noise Ordinances·Compare Maricopa County to another location·View the Arizona noise ordinances overview
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