Quiet Hours: Castaic vs Norwalk
How do quiet hours rules compare between Castaic, CA and Norwalk, CA?
Norwalk has fewer restrictions than Castaic.
Castaic, CA
Los Angeles County
Los Angeles County Code Title 12, Chapter 12.08 establishes exterior noise standards for unincorporated areas. Residential zones are limited to 50 dBA daytime and 45 dBA nighttime. Nighttime quiet hours run from 10 PM to 7 AM.
View full Castaic rules →Norwalk, CA
Los Angeles County
Norwalk Article III treats any noise reading exceeding the ambient noise level at a residential property line by more than 5 dBA as prima facie evidence of violation. 'Daytime' is M-F 7 AM-8 PM, Sat 8 AM-8 PM, Sun/holidays 9 AM-8 PM.
View full Norwalk rules →Key Facts Comparison
| Fact | Castaic | Norwalk |
|---|---|---|
| Code Section | Title 12, Ch. 12.08 | - |
| Residential Day | 50 dBA max | - |
| Residential Night | 45 dBA max | - |
| Quiet Hours | 10 PM – 7 AM | - |
| Enforcement | (626) 430-5201 | - |
| Standard | - | Ambient + 5 dBA |
| M-F Daytime | - | 7 AM - 8 PM |
| Saturday | - | 8 AM - 8 PM |
| Sun/Holiday | - | 9 AM - 8 PM |
Highlighted rows indicate differences between cities.
Castaic FAQ
What are quiet hours in unincorporated LA County?
Nighttime quiet hours run from 10 PM to 7 AM under LA County Code Chapter 12.08. During these hours, residential areas have a 45 dBA exterior noise limit.
How do I file a noise complaint in unincorporated LA County?
Call LA County Environmental Health at (626) 430-5201 for noise complaints related to businesses or construction. For general disturbances, contact the LA County Sheriff.
Norwalk FAQ
How does Norwalk measure a noise violation?
Article III of the Norwalk Municipal Code treats any average noise reading at the residential property line that exceeds the ambient (background) noise level by more than 5 dBA as prima facie evidence of a violation. Officers measure with a sound-level meter.
What hours count as 'daytime' for noise purposes?
Monday-Friday 7 AM to 8 PM; Saturday 8 AM to 8 PM; Sunday and federal/state holidays 9 AM to 8 PM. Outside those windows, the stricter nighttime expectations apply.
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