Industrial Noise: Mountain View vs San Jose
How do industrial noise 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
Industrial and commercial properties in Mountain View must comply with stationary noise source limits measured at property lines, with conditions enforced through zoning and use permits.
View full Mountain View 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 | Mountain View | San Jose |
|---|---|---|
| Residential-adjacent daytime | 60 dBA property line | - |
| Residential-adjacent nighttime | 50 dBA property line | - |
| Loading restrictions | 10pm to 7am | - |
| Enforcement | Code Enforcement and Planning | Planning and Code Enforcement |
| Use permit review | Planning Commission | - |
| 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 |
Highlighted rows indicate differences between cities.
Mountain View FAQ
Can I complain about a nearby data center?
Yes. File with Code Enforcement; repeated violations can trigger review of the facility conditional use permit.
Are generator test runs exempt?
Brief weekly generator tests are typically allowed during daytime hours if disclosed in the facility use permit.
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.
Compare other topics
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