Amplified Music & Events: Mountain View vs San Jose
How do amplified music & events rules compare between Mountain View, CA and San Jose, CA?
Mountain View and San Jose have similar restriction levels.
Mountain View, CA
Santa Clara County
Amplified music from speakers, DJs, and live bands requires compliance with decibel limits and quiet hours; Shoreline Amphitheatre operates under a separate use permit with its own noise conditions.
View full Mountain View rules →San Jose, CA
Santa Clara County
Santa Clara County regulates amplified music through its noise ordinance with decibel limits and quiet hours. Outdoor amplified sound generally requires a permit and must meet property-line limits.
View full San Jose rules →Key Facts Comparison
| Fact | Mountain View | San Jose |
|---|---|---|
| Daytime limit residential | 55 dBA property line | - |
| Nighttime limit residential | 45 dBA property line | - |
| Castro St weeknight cutoff | 10pm | - |
| Shoreline Amphitheatre | Separate use permit | - |
| Permit contact | (650) 903-6306 | - |
| Day Limit | - | 55 dBA at residential property line |
| Night Limit | - | 45 dBA (10 PM to 7 AM) |
| Permit Required | - | For commercial outdoor amplified events |
| Quiet Hours | - | 10:00 PM to 7:00 AM |
| Enforcement | - | Santa Clara County Sheriff |
Highlighted rows indicate differences between cities.
Mountain View FAQ
Do I need a permit for a backyard DJ?
Private residential events do not require a permit but must stay within decibel limits and end amplification by 10pm.
How late can Shoreline concerts run?
Shoreline Amphitheatre main events typically end by 11pm under its use permit, with stricter weeknight conditions.
San Jose FAQ
Do I need a permit for a backyard party with amplified music?
Occasional private gatherings typically do not require a permit, but music must stop by 10:00 PM and stay within decibel limits. Repeated complaints can result in citations.
What if my neighbor plays loud music constantly?
Call the Sheriff non-emergency line. Deputies can measure with a sound meter and issue citations if levels exceed the ordinance.
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