Maricopa County Code Title XIII Chapter 1 (Noise Ordinance) lets the Sheriff cite hosts of loud parties exceeding decibel limits or quiet-hours rules. Repeat second-response calls within 12 months allow cost-recovery billing for the host or property owner.
Maricopa County Title XIII regulates noise in unincorporated areas, with quiet hours from 10 p.m. to 7 a.m. on weekdays (until 8 a.m. weekends). Decibel limits typically cap residential ambient at 55 dBA daytime and 45 dBA nighttime measured at the property line. Sheriff deputies issue warnings on first response and citations on subsequent visits. Cost recovery allows billing the responsible host the actual sheriff response cost (typically $200 to $500) for a second response within 12 months. Phoenix, Mesa, and other cities run their own loud-party ordinances with similar cost-recovery models, often layered with social-host alcohol liability under ARS 4-244.
First violation typically draws a warning. Second response within 12 months is a Class 1 misdemeanor with up to $2,500 fine plus actual sheriff response costs charged to the host. Underage drinking gatherings trigger ARS 4-244 social-host criminal liability.
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Side-by-side rule comparisons with other cities in Maricopa County.
See how Peoria's loud party ordinance rules stack up against other locations.
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