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Maricopa, AZ Noise Ordinances: Decibel Limits (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Residential daytime limit
55 dBA (L50), 70 dBA peak
Residential nighttime limit
45 dBA (L50), 60 dBA peak
Nighttime hours
10:00 p.m. to 6:00 a.m.
Interior residential cap
40 dBA day / 30 dBA night
Governing provision
MCC § 18.110.050(G), Table 18.110.050.G

Summary

The City of Maricopa caps residential noise at 55 dBA daytime and 45 dBA nighttime (L50), with peak limits of 70 and 60 dBA under the zoning code's noise performance standards.

G. Exterior and Interior Noise Limits Related to Land Use or Activities Permitted by Zoning. No use or activity permitted by the zoning code shall create noise levels that exceed the following standards. The maximum allowable noise levels do not apply to noise generated by automobile traffic or other mobile noise sources in the public right-of-way.

View official code

Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 26-10, passed April 21, 2026).

Full Breakdown

Maricopa Municipal Code § 18.110.050(G) sets maximum exterior and interior noise levels by land use for any development subject to the zoning code. Residential daytime (6:00 a.m.-10:00 p.m.) exterior limit is 55 dBA (L50) with a 70 dBA peak (Lmax); nighttime (10:00 p.m.-6:00 a.m.) drops to 45 dBA average and 60 dBA peak. Interior standards are 40/30 dBA daytime/nighttime. Medical and convalescent uses share the same exterior limits but tighter interior caps. The standards don't apply to traffic noise in the public right-of-way, and levels can be adjusted up to 15 dBA for short-duration noise or down 5 dBA where ambient noise already runs low.

Violations & Fines

Zoning administrator enforcement: developments exceeding Table 18.110.050.G limits must fund an acoustic study and add noise attenuation measures, including barriers, before approval.

Frequently Asked Questions

What is Maricopa's residential noise limit at night?
Under MCC § 18.110.050(G), residential exterior noise can't average above 45 dBA (L50) between 10:00 p.m. and 6:00 a.m., with a 60 dBA peak (Lmax) ceiling.
Does the noise standard apply to traffic?
No. Table 18.110.050.G's maximum noise levels exclude noise from automobile traffic or other mobile sources in the public right-of-way.
Can noise exceed the limit for short bursts?
Yes: noise lasting one minute or less per hour can exceed the limit by 15 dBA, five minutes by 10 dBA, and 15 minutes by 5 dBA.

Sources & Official References

Other rules in Maricopa

Parking Rules: Street Parking LimitsSome RestrictionsQuiet HoursSome RestrictionsConstruction HoursSome RestrictionsParking Rules: RV & Boat ParkingSignificant RestrictionsAmplified Music & Outdoor SoundSignificant RestrictionsVehicle NoiseSome RestrictionsBarking DogsSome RestrictionsParking Rules: EV ChargingSome RestrictionsParking Rules: Curb Color RulesSome RestrictionsFence Regulations: Retaining WallsSome RestrictionsFence Regulations: Material RestrictionsHeavy Restrictions

All Maricopa rules

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