Decibel Limits: Berkeley vs San Leandro
How do decibel limits rules compare between Berkeley, CA and San Leandro, CA?
San Leandro has fewer restrictions than Berkeley.
Berkeley, CA
Alameda County
Berkeley enforces specific decibel caps in BMC 13.40: 60 dB daytime and 50 dB nighttime in residential zones, measured at the property line, among the strictest in the Bay Area.
View full Berkeley rules →San Leandro, CA
Alameda County
San Leandro Municipal Code Title 4 (Public Welfare), Chapter 4-1, Article 11 regulates noise based on a relative standard rather than fixed absolute dBA limits. Radio, television, audio equipment, drums, and similar devices are unlawful when they exceed the ambient noise level on adjacent property by more than five (5) decibels.
View full San Leandro rules →Key Facts Comparison
| Fact | Berkeley | San Leandro |
|---|---|---|
| Residential day | 60 dBA | - |
| Residential night | 50 dBA | - |
| Commercial day | 65 dBA | - |
| Industrial day | 70 dBA | - |
| Measurement point | Receiving property line | - |
| Code Section | - | SLMC Title 4, Chapter 4-1, Article 11 |
| Standard | - | Ambient + 5 dB at receiving property line |
| Residential Planning Threshold | - | 60 dBA Ldn (General Plan Noise Element) |
| Measurement Location | - | Property line of complainant |
| First-offense Fine | - | Up to $100 (infraction) |
Highlighted rows indicate differences between cities.
Berkeley FAQ
How is 50 dBA enforced at night?
Officers use calibrated sound meters at the complainants property line. A sustained reading above the limit supports a citation.
Do these limits apply to vehicles?
Vehicle noise on public streets is governed by California Vehicle Code, but idling and stationary vehicle sound on private property falls under BMC 13.40.
San Leandro FAQ
What is the decibel limit in San Leandro?
San Leandro does not publish a single fixed dBA limit. Under SLMC Title 4 Chapter 4-1 Article 11, amplified sound or musical instruments are unlawful if they exceed the existing ambient noise level on adjacent property by more than 5 decibels measured at the receiving property line.
How does San Leandro measure noise complaints?
Police officers use either a calibrated Type 2 sound level meter or apply the 'plainly audible' test from the property line. If the noise is more than 5 dB above background, it is a violation under SLMC Article 11.
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