Quiet Hours: Mountain View vs Sunnyvale
How do quiet hours rules compare between Mountain View, CA and Sunnyvale, CA?
Mountain View and Sunnyvale have similar restriction levels.
Mountain View, CA
Santa Clara County
Mountain View prohibits disturbing noise between 10pm and 7am weekdays and 10pm to 8am weekends, with enforcement by police and code enforcement officers.
View full Mountain View rules →Sunnyvale, CA
Santa Clara County
Sunnyvale enforces nighttime quiet hours from 10 PM to 7 AM (8 AM on weekends and holidays) under Municipal Code Chapter 19.48, with stricter decibel limits for residential zones during these times.
View full Sunnyvale rules →Key Facts Comparison
| Fact | Mountain View | Sunnyvale |
|---|---|---|
| Weekday quiet hours | 10pm to 7am | - |
| Weekend quiet hours | 10pm to 8am | 10 PM to 8 AM |
| Code section | Chapter 21 Noise Ordinance | - |
| First-offense fine | Around 100 dollars | - |
| Non-emergency dispatch | (650) 903-6395 | - |
| Weeknight quiet hours | - | 10 PM to 7 AM |
| Residential night limit | - | 50 dBA at property line |
| Residential day limit | - | 60 dBA at property line |
| Enforcement | - | Public Safety, (408) 730-7100 |
Highlighted rows indicate differences between cities.
Mountain View FAQ
Can I host a backyard party past 10pm?
You can, but amplified music and loud voices must not be audible at neighboring properties after 10pm on weekdays or 11pm on weekends to avoid a citation.
Who enforces Mountain View quiet hours?
Mountain View Police respond to active disturbances; Code Enforcement handles ongoing patterns and follow-up citations.
Sunnyvale FAQ
Can I call police for a loud neighbor at 11 PM?
Yes. Sunnyvale Public Safety takes after-hours noise complaints at (408) 730-7100. Officers will respond and may issue a warning or citation.
Do quiet hours apply to backyard pool pumps?
Yes. Any mechanical equipment audible at the property line must comply with the 50 dBA nighttime limit. Newer variable-speed pumps usually qualify.
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