Quiet hours in Walnut Creek, CA — also called the noise ordinance, nighttime noise rules, or residential quiet time — define the hours during which excessive noise is prohibited.
Walnut Creek observes nighttime quiet hours from 10:00 PM to 7:00 AM daily under Municipal Code Chapter 4-3, during which noise audible at a residential property line must not exceed 50 dBA and no loud or disturbing sounds are permitted.
The city's quiet-hours framework is integrated into its general noise ordinance rather than a stand-alone curfew. From 10:00 PM to 7:00 AM (Sunday through Saturday), the nighttime exterior noise standard drops to 50 dBA at residential receptors. During these hours, activities such as outdoor parties, amplified music, power tools, yard equipment, and loud vehicle work are prohibited if audible at neighboring properties. Interior-to-interior disturbances (such as loud stereos in apartment buildings) are also covered under the nuisance-noise provisions. There is no separate weekend extension of morning quiet hours in Walnut Creek — the 7:00 AM start applies seven days a week, though construction activity is more tightly regulated on weekends (see construction-hours). Residents hosting events that may exceed thresholds can apply for a temporary noise variance through Community Development. Violations are typically handled by WCPD on a complaint basis; officers may issue warnings, citations, or — for amplified-sound violations — direct abatement orders requiring the noise to cease immediately.
Contact your local code enforcement office for specific penalty information.
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Side-by-side rule comparisons with other cities in Contra Costa County.
See how other cities in Contra Costa County handle quiet hours.
See how Walnut Creek's quiet hours rules stack up against other locations.
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