Amplified Music & Events: Mountain View vs Sunnyvale
How do amplified music & events rules compare between Mountain View, CA and Sunnyvale, CA?
Mountain View and Sunnyvale 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 →Sunnyvale, CA
Santa Clara County
Amplified music audible beyond a property line after 10 PM violates Sunnyvale Municipal Code Chapter 19.48. Outdoor entertainment at commercial venues requires a special event permit from the city.
View full Sunnyvale rules →Key Facts Comparison
| Fact | Mountain View | Sunnyvale |
|---|---|---|
| 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 | - |
| Weeknight cutoff | - | 10 PM |
| Weekend cutoff | - | 10 PM residential / 11 PM permitted |
| Loud party response | - | Fee for second call |
| Commercial outdoor music | - | Requires CUP |
| Enforcement | - | Public Safety Department |
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.
Sunnyvale FAQ
Do I need a permit for a backyard wedding with a DJ?
For residential events over 50 guests or with amplified sound past 10 PM, a special event permit is recommended to avoid complaints and citations.
What is the loud party response fee?
If officers respond a second time within a short window, the host can be billed for the cost of the additional response under city policy.
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