Rialto, CA Public Conduct: Loud Party Ordinance (2026)
Key Facts
- First response
- Notice posted 90 days, mailed to owner
- Second response
- Full police services fee billed
- Fee liability
- Joint and several, owner and host
- Base offense
- Misdemeanor plus administrative citation
- Enacted
- Ord. No. 1488, 4-26-11
Summary
Rialto Municipal Code 9.48.050 declares it unlawful and a public nuisance to host a gathering that substantially disturbs neighbors' quiet enjoyment, covering excessive noise, street-blocking crowds, public drunkenness and fights. A second police response within 90 days makes the host liable for the full cost of the response.
9.48.050 - Loud or unruly gatherings-Public nuisance. It shall be unlawful and a public nuisance to host, permit, or allow a gathering on any private property when such gather constitutes a substantial disturbance of the quiet enjoyment of private or public property. Such unlawful conduct may include, but is not limited to: excessive noise or traffic, obstruction of public streets by crowds or vehicles, public drunkenness, the service of alcoholic beverages to minors, fights, disturbances of the peace, vandalism, and/or litter.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 39).
Full Breakdown
48, adopted by Ordinance No. 1488 in April 2011, targets loud or unruly private gatherings. 050 declares it unlawful and a public nuisance to host, permit, or allow a gathering on private property that constitutes a substantial disturbance of the quiet enjoyment of private or public property, listing examples including excessive noise or traffic, obstruction of public streets by crowds or vehicles, public drunkenness, service of alcohol to minors, fights, disturbances of the peace, vandalism, and litter. 50) or state law such as Penal Code breach-of-peace and public intoxication statutes.
070 requires posting a notice on the property for 90 days and mailing notice to the property owner warning that a second nuisance response within 90 days triggers joint and several liability. 090 is billed at each responding officer or employee's actual pay rate plus workers' compensation and administrative costs. That fee becomes a debt to the city collectible in court, with the city entitled to recover its attorney fees and costs. 10.
Violations & Fines
Hosting a nuisance gathering is a misdemeanor under Section 9.48.110, and the citee is also subject to administrative citation under Chapter 1.10. A second police response to the same premises within 90 days of a posted or mailed notice makes responsible parties, including the property owner, jointly and severally liable for the full police services fee under Sections 9.48.080-9.48.090, collectible as a civil debt with the city's attorney fees added.
Frequently Asked Questions
What counts as an unlawful gathering in Rialto?
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Sources & Official References
Other rules in Rialto
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