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

City Code § 16-32 defines an unruly gathering as five or more people on private property, including a business, causing a disturbance of the quiet enjoyment of nearby property, expressly including excessive noise or traffic, obstruction of streets, public drinking, service or consumption of alcohol by minors, fighting, disturbing the peace, or littering. A peace officer can abate the gathering by citation, arrest, or dispersal, then the premises must be posted with a notice naming the date of the gathering and warning that a repeat within 180 days triggers liability.

Tearing down, defacing, or hiding that notice is its own civil infraction carrying a mandatory minimum $100 fine. Liability for the first unruly gathering falls on whoever organized or sponsored the event, plus any owner or occupant who was in attendance, the mandatory minimum fine is $500, rising to $750 if that party has a prior unruly-gathering finding anywhere in the city. A second event at the same address within the 180-day posting window escalates sharply: a mandatory minimum of $750 for a first subsequent violation, $1,000 for a second, and $1,500 for every third or later violation, plus the city can bill the responsible party for the police department's actual response costs (officer salaries, overhead, injury or property damage), capped at $1,000.

The property owner can be swept into that subsequent-violation liability even if not present, provided the owner was notified by mail or in person at least two weeks before the repeat incident. Owners have an out: the ordinance does not impose liability on an owner, occupant, tenant, or sponsor for uninvited guests' conduct if they took reasonable steps to prevent a repeat gathering or exclude those people, including actively evicting a problem tenant. Anyone posted can contest the notice within 10 days (15 if mailed) by petitioning the civil infractions division of city court, and an owner can separately petition at any time to have the notice removed by showing reasonable corrective action was taken.