Quiet hours in Dublin, CA — also called the noise ordinance, nighttime noise rules, or residential quiet time — define the hours during which excessive noise is prohibited.
Dublin, California regulates noise primarily through a nuisance-based standard in Municipal Code Chapter 5.28, which makes loud, unnecessary, or habitual noise that disturbs a reasonable person unlawful at any hour. A 2026 amendment added objective overnight cutoffs for landscape equipment and amplified sound in residential areas.
Dublin's core noise rule is Municipal Code Section 5.28.020 ("Unreasonable Noise Prohibited"), which declares it unlawful and a nuisance for any person to make loud, disturbing, unnecessary, unusual, or habitual noise that annoys, disturbs, injures, or endangers the health, repose, peace, or safety of any reasonable person of normal sensitivity in the area. Rather than fixing a single citywide "quiet hour," the code lists factors used to judge a violation: the level, intensity, character, and duration of the noise; background noise; the time, place, and zoning district; proximity to residential sleeping facilities; and whether the noise is recurrent, intermittent, or constant. In May and June 2026 the City Council amended Chapter 5.28 to add a "Prohibited Acts" section creating objective overnight cutoffs in residential areas: landscape equipment is barred 8:00 p.m.-7:00 a.m. on weekdays and 8:00 p.m.-8:00 a.m. on weekends, and amplified sound is barred 8:00 p.m.-10:00 a.m. Sunday-Thursday and 10:00 p.m.-10:00 a.m. Friday-Saturday. The broader nuisance standard still applies around the clock for other disruptive noise. Enforcement runs through Code Enforcement or Dublin Police Services, with the City emphasizing education and voluntary compliance first.
A violation of Chapter 5.28 is a misdemeanor; on conviction it is punishable by a fine not to exceed $500 or imprisonment in county jail not to exceed 30 days, or both, and each violation is a separate offense (Section 5.28.030). The City typically pursues education and voluntary compliance before citing.
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Side-by-side rule comparisons with other cities in Alameda County.
See how other cities in Alameda County handle quiet hours.
See how Dublin's quiet hours rules stack up against other locations.
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