Quiet hours in Brentwood, CA — also called the noise ordinance, nighttime noise rules, or residential quiet time — define the hours during which excessive noise is prohibited.
Brentwood's quiet hours run from 10:00 PM to 7:00 AM on weekdays and Saturdays, and 10:00 PM to 8:00 AM on Sundays and holidays. During these hours, amplified sound, power tools, and other loud activity audible at the property line is prohibited under BMC Chapter 9.32.
Quiet hours in Brentwood are codified under Municipal Code Chapter 9.32. Between 10:00 PM and 7:00 AM (8:00 AM on Sundays and federal holidays), no person shall make, continue, or cause to be made any loud, unnecessary, or unusual noise that disturbs the peace or quiet of a neighborhood. Common violations include loud music, shouting, barking dogs, and operation of power equipment. Nighttime residential decibel limits drop to 50 dBA at the property line. Violations are typically first addressed with a warning, followed by administrative citations starting at $100 for the first offense, $200 for the second, and $500 for subsequent violations within a 12-month period. Repeat or egregious violations may be charged as misdemeanors under state law. Party and event hosts are responsible for controlling guest noise. Short-term rental operators face additional penalties under the city's STR program for quiet-hour violations.
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 Brentwood's quiet hours rules stack up against other locations.
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