Industrial Noise: San Francisco vs San Jose
How do industrial noise rules compare between San Francisco, CA and San Jose, CA?
San Jose has fewer restrictions than San Francisco.
San Francisco, CA
San Francisco County
Industrial noise in San Francisco is capped at 65-70 dBA at the property line under Police Code Article 29 and must not exceed ambient by more than 5 dBA. Fixed mechanical equipment, HVAC, and industrial operations are subject to stricter nighttime limits.
View full San Francisco rules →San Jose, CA
Santa Clara County
Industrial noise in unincorporated Santa Clara County must comply with the County Noise Ordinance and CEQA thresholds. Industrial-zone limits are 70 dBA day and 65 dBA night at property lines.
View full San Jose rules →Key Facts Comparison
| Fact | San Francisco | San Jose |
|---|---|---|
| - | - | |
| Industrial Day Limit | - | 70 dBA at industrial property line |
| Industrial Night Limit | - | 65 dBA |
| Adjacent Residential | - | 55/45 dBA receiving-zone applies |
| CEQA Metric | - | Ldn/CNEL day-night average |
| Enforcement | - | Planning and Code Enforcement |
Highlighted rows indicate differences between cities.
San Francisco FAQ
San Jose FAQ
What if an industrial site is louder than allowed?
File a Code Enforcement complaint. Staff may require a noise study and order mitigation such as barriers or operational changes.
Do noise limits apply during CEQA review?
Yes. Projects must demonstrate compliance or propose mitigation to avoid a significant impact finding.
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