Outdoor music is regulated under OMC Title 5 Chapter 29 and the special-event permit process. Venues and events with amplified sound need a city permit; residential outdoor music cannot disturb neighbors after 10 PM.
Ontario Municipal Code Title 5 Chapter 29, particularly Section 5-29.07, covers outdoor music of all kinds, from backyard speakers to restaurant patios and stadium events. The city's special-event permit process, administered through the Community Life and Culture Agency with police and fire coordination, governs festivals, concerts, weddings, and outdoor receptions at venues such as Toyota Arena, the Ontario Convention Center, and public parks. Permits set start and stop times, maximum decibel levels at defined measurement points, and may require sound monitors on site. Residential outdoor music in neighborhoods near the Ontario Ranch, Creekside, and downtown districts must not project sound into neighboring yards in a manner that disturbs the peace. Nighttime standards from 10 PM to 7 AM are stricter and typically require music to be moved indoors or ended. Repeat violations can result in citations, permit revocation, and loss of a venue's entertainment privileges.
Contact your local code enforcement office for specific penalty information.
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