Quiet Hours: Brentwood vs Oakley
How do quiet hours rules compare between Brentwood, CA and Oakley, CA?
Brentwood and Oakley have similar restriction levels.
Brentwood, CA
Contra Costa County
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.
View full Brentwood rules →Oakley, CA
Contra Costa County
Oakley Municipal Code Chapter 8.20 establishes quiet hours from 10:00 PM to 7:00 AM on weekdays and 10:00 PM to 8:00 AM on weekends and holidays. Amplified sound, machinery, and loud activities audible beyond property lines during these hours constitute a violation, though agricultural operations protected by California Civil Code 3482.5 remain exempt.
View full Oakley rules →Key Facts Comparison
| Fact | Brentwood | Oakley |
|---|---|---|
| Weekday quiet hours | 10 PM-7 AM | 10:00 PM – 7:00 AM |
| Sunday/holiday quiet hours | 10 PM-8 AM | - |
| First offense fine | $100 administrative citation | - |
| Repeat violation | Up to $500 or misdemeanor | - |
| Reporting | BPD non-emergency (925) 634-6911 | - |
| Weekend quiet hours | - | 10:00 PM – 8:00 AM |
| Code chapter | - | OMC Chapter 8.20 |
| Enforcement | - | Oakley PD / CCC Sheriff |
| Ag exemption | - | CA Civil Code 3482.5 |
Highlighted rows indicate differences between cities.
Brentwood FAQ
Can I do yard work before 7 AM?
No. Power equipment including mowers, blowers, and saws cannot be operated before 7 AM on weekdays/Saturdays or 8 AM on Sundays and holidays in residential zones.
What happens on the first complaint?
Officers typically issue a verbal or written warning and ask the offender to reduce noise. A second visit the same night, or a repeat complaint, can result in an administrative citation.
Oakley FAQ
Can I run a washing machine after 10 PM?
Interior household appliances are generally fine if they are not audible from neighboring property lines. Running a washer or dryer inside a closed home typically does not violate Oakley's noise standards.
Are leaf blowers restricted?
Yes. Gas-powered leaf blower sales are banned statewide under AB 1346 effective January 2024, and Oakley restricts powered yard equipment use outside of daytime hours under OMC Chapter 8.20.
Who responds to late-night noise complaints?
Oakley contracts for police services through the Contra Costa County Sheriff's Office. Call the non-emergency line for ongoing noise disturbances after quiet hours begin.
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