Quiet hours in San Ramon, CA β also called the noise ordinance, nighttime noise rules, or residential quiet time β define the hours during which excessive noise is prohibited.
San Ramon enforces quiet hours from 10:00 PM to 7:00 AM daily under Municipal Code Chapter B3-40. During these hours, sound levels at residential property lines cannot exceed 50 dBA, and amplified sound, power equipment, and construction are prohibited. The city treats repeated late-night disturbances as public nuisances subject to progressive fines.
Quiet hours in San Ramon run from 10:00 PM to 7:00 AM, seven days per week, with no separate weekend extension. During quiet hours, the maximum permitted sound level at residential property lines drops to 50 dBA, a 10 dB reduction from daytime standards. Amplified music, power tools, outdoor mechanical equipment (pool pumps, generators, HVAC), and construction activity are all restricted during these hours. The ordinance specifically targets the following nighttime nuisances: party noise audible beyond the property line, barking dogs sustained more than 10 minutes, vehicle stereos operating in driveways or on streets, and home mechanical systems lacking sound attenuation. Residents experiencing nighttime disturbances should contact the Contra Costa County Sheriff non-emergency dispatch at (925) 646-2441. Deputies may issue verbal warnings, written warnings, or administrative citations depending on prior history at the address. The city's code enforcement division can open cases against chronic violators, including landlords whose tenants repeatedly generate disturbances. Common exemptions include emergency repairs to utilities, public safety activities, and city-authorized events at Central Park or the San Ramon Community Center. Homeowners in master-planned communities like Dougherty Valley may also face HOA-imposed quiet hours that are stricter than city rules β HOA enforcement runs parallel to municipal enforcement.
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 San Ramon's quiet hours rules stack up against other locations.
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