Construction Equipment Noise: San Jose vs Sunnyvale
How do construction equipment noise rules compare between San Jose, CA and Sunnyvale, CA?
San Jose and Sunnyvale have similar restriction levels.
San Jose, CA
Santa Clara County
SJMC Title 20.100 limits construction equipment noise at residential property lines to 75 dBA daytime, with work permitted only between 7 a.m. and 7 p.m. weekdays and 9 a.m. to 7 p.m. weekends. Pile drivers, jackhammers, and impact tools require additional mitigation under California Building Code chapters.
View full San Jose rules →Sunnyvale, CA
Santa Clara County
Santa Clara County Title B limits construction equipment noise in unincorporated areas to weekday daytime hours and caps levels at the property line. Cities like San Jose, Sunnyvale, and Cupertino adopt their own stricter or comparable construction noise ordinances.
View full Sunnyvale rules →Key Facts Comparison
| Fact | San Jose | Sunnyvale |
|---|---|---|
| Code chapter | SJMC Chapter 20.100 | - |
| Daytime limit | 75 dBA at property line | - |
| Weekday hours | 7 a.m. to 7 p.m. | 7:00 AM to 7:00 PM |
| Weekend hours | 9 a.m. to 7 p.m. | - |
| Night work | After-hours permit required | - |
| Authority | - | SCC Title B noise regulations |
| Saturday hours | - | 9:00 AM to 6:00 PM |
| Sunday/holiday work | - | Generally prohibited |
| Coverage | - | Unincorporated SCC; cities differ |
Highlighted rows indicate differences between cities.
San Jose FAQ
When can construction start in my San Jose neighborhood?
Weekdays at 7 a.m. and weekends at 9 a.m. Work must end by 7 p.m. Crews running before or after those hours without a special after-hours permit from the Building Department violate SJMC 20.100 and are subject to citation.
How loud can a jackhammer legally be in San Jose?
Construction equipment may not exceed 75 dBA measured at the nearest residential property line during permitted hours. High-impact tools must use mufflers and barriers. Sustained exceedances trigger code enforcement action and required mitigation.
Who do I call about loud construction next door?
Call San Jose Code Enforcement at (408) 535-7770 during business hours or SJPD non-emergency at (408) 277-8900 after hours. CEQA-conditioned projects may also have project-specific complaint hotlines listed on the construction notice.
Sunnyvale FAQ
Do these hours apply inside city limits?
No. Each city sets its own construction hours. San Jose, Sunnyvale, Mountain View, and Cupertino each have municipal codes with comparable rules. Confirm the city ordinance before scheduling work, especially in residential zones.
Are emergency repairs exempt?
Yes. Public utility emergency repairs, gas leaks, water main breaks, and Caltrans nighttime freeway closures are exempt from hour restrictions. Document the emergency and notify code enforcement when feasible.
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