Mesa, AZ Public Conduct: Loud Party Ordinance (2026)

Mesa City Code Title 6, Chapter 12 regulates "excessive, unnecessary, or offensive sound, noise, and vibration" citywide. ), and whether the noise is electronically amplified. Section 6-12-8 assigns responsibility for a party or gathering that generates a violation: anyone who makes, assists in making, or permits the noise is guilty, and if that person can't be identified, a rebuttable presumption of guilt falls on the property owner, manager, event sponsor, lessee, or occupant of the premises. Attendees who personally cause the disturbance can also be cited individually.

Enforcement runs through Mesa Police Officers, Code Compliance Officers, Animal Control Officers, and Park Rangers (Section 6-12-9). Section 6-12-10 sets civil sanctions of $250-$1,500 for a first finding of responsibility, $500-$2,500 for a second within 24 months, and $750-$2,500 for a third within 24 months, with each violation treated as a separate offense. Section 6-12-11 escalates repeat conduct to criminal exposure: a person found responsible three times within a 12-month period becomes a "habitual offender" guilty of a class 1 misdemeanor, punishable by up to six months in jail and a fine up to $2,500, with a mandatory minimum $500 fine per count, prosecuted by the Mesa City Prosecutor in Mesa City Court.