Norwalk vs Torrance
How do decibel limits rules compare between Norwalk, CA and Torrance, CA?
Norwalk and Torrance have similar restriction levels.
Norwalk, CA
Los Angeles County
LA County Code Section 12.08.390 establishes tiered exterior noise standards by zone for unincorporated areas. Residential limits are 50 dBA day and 45 dBA night. Commercial zones allow 60/55 dBA and industrial zones allow 70 dBA at all times.
View full Norwalk rules →Torrance, CA
Los Angeles County
Torrance establishes zone-based noise limits under TMC Chapter 46. Region 2 (residential): 65 dBA day / 55 dBA night. Region 1 (near refineries): 70 dBA day / 65 dBA night. Construction limited to 50 dB at property line during permitted hours. Train whistles prohibited above 96 dBA.
View full Torrance rules →Key Facts Comparison
| Fact | Norwalk | Torrance |
|---|---|---|
| Code Section | §12.08.390 | - |
| Residential Day | 50 dBA | 65 dBA (Region 2) |
| Residential Night | 45 dBA | 55 dBA (Region 2) |
| Commercial Day | 60 dBA | - |
| Industrial | 70 dBA always | - |
| Refinery Area Day | - | 70 dBA (Region 1) |
| Train Whistles | - | 96 dBA max |
Highlighted rows indicate differences between cities.
Norwalk FAQ
What are the decibel limits in unincorporated LA County?
Residential areas are limited to 50 dBA during the day and 45 dBA at night. Commercial zones allow 60 dBA daytime and 55 dBA nighttime. Industrial zones permit 70 dBA at all times.
How are noise violations measured in LA County?
Noise is measured at the property line of the affected party using the A-weighted decibel scale. Duration matters too — exceeding limits for more than 30 minutes per hour triggers Standard No. 1.
Torrance FAQ
What are Torrance's noise limits?
Most residential areas: 65 dB(A) daytime and 55 dB(A) nighttime. Near refineries: 70/65 dB(A). Plus, any noise exceeding ambient by 5+ dB at residential property lines is a prima facie violation.
How do I file a noise complaint in Torrance?
Contact Torrance Noise Abatement at (310) 784-7950 or email noiseabatement@torranceca.gov.
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