Quiet Hours: Castro Valley vs Fremont
How do quiet hours rules compare between Castro Valley, CA and Fremont, CA?
Castro Valley and Fremont have similar restriction levels.
Castro Valley, CA
Alameda County
Castro Valley is unincorporated Alameda County, so noise is governed by Alameda County Code Chapter 6.60. Section 6.60.050 prohibits any radio, stereo, audio equipment, musical instrument, or device producing sound that is plainly audible at 50 feet from the source at any hour. Decibel limits in Tables 6.60.040A and 6.60.040B apply to residential and commercial zones.
View full Castro Valley rules →Fremont, CA
Alameda County
Fremont enforces nighttime quiet hours from 10 PM to 7 AM weekdays and until 8 AM weekends under the Municipal Code noise ordinance.
View full Fremont rules →Key Facts Comparison
| Fact | Castro Valley | Fremont |
|---|---|---|
| Jurisdiction | Alameda County (unincorporated) | - |
| Code Reference | Code Ch. 6.60 | - |
| Plainly Audible Rule | 50 feet anytime (Sec. 6.60.050) | - |
| Decibel Tables | 6.60.040A and 6.60.040B | - |
| Weekday Quiet Hours | - | 10 PM to 7 AM |
| Weekend Quiet Hours | - | 10 PM to 8 AM |
| Code Section | - | FMC Chapter 5.30 |
| First Violation Fine | - | 100 dollars |
| Complaint Line | - | 510-790-6800 |
Highlighted rows indicate differences between cities.
Castro Valley FAQ
What are Castro Valley's quiet hours?
Castro Valley follows Alameda County Code Chapter 6.60. Any radio, stereo, or audio device that is plainly audible 50 feet from the source is prohibited at any time. Tables 6.60.040A/B set decibel limits that are stricter at night (typically 10 p.m.-7 a.m.).
Who enforces noise complaints in Castro Valley?
The Alameda County Sheriff's Office handles after-hours complaints; Alameda County Environmental Health handles ongoing/stationary noise. Call non-emergency dispatch to file a complaint.
Fremont FAQ
Can I call police about a loud party at 11 PM?
Yes. After 10 PM Fremont Police will respond to noise complaints and may issue warnings or citations under FMC 5.30.
Are quiet hours different on weekends?
Yes, weekend quiet hours start at 10 PM but extend until 8 AM the following morning, giving residents an extra hour.
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