Industrial Noise: Los Angeles vs San Diego
How do industrial noise rules compare between Los Angeles, CA and San Diego, CA?
Los Angeles and San Diego have similar restriction levels.
Los Angeles, CA
Los Angeles County
Industrial and construction machinery in or within 500 feet of a residential zone must not exceed 75 dB(A) at 50 feet between 7 AM and 10 PM under LAMC 112.05. No person may operate equipment causing noise at neighboring occupied property to exceed ambient levels by more than 5 dB. Industrial areas have a 70 dB ambient ceiling.
View full Los Angeles rules →San Diego, CA
San Diego County
SDMC Section 59.5.0401 sets exterior noise level limits based on zoning districts. Industrial noise must not cause the one-hour average sound level to exceed the applicable limit at any location on or beyond the property boundary. The sound level limit at a boundary between two zoning districts is the arithmetic mean of the respective limits. The City enforces a 65 dB CNEL standard for noise-sensitive uses.
View full San Diego rules →Key Facts Comparison
| Fact | Los Angeles | San Diego |
|---|---|---|
| Construction Limit | 75 dB(A) at 50 ft | - |
| Hours | 7 AM-10 PM near residential | - |
| Ambient Rule | Cannot exceed ambient +5 dB | - |
| Industrial Ceiling | 70 dB at property line | - |
| Code Section | LAMC 112.05 | SDMC §59.5.0401 |
| Standard | - | One-hour average at property boundary |
| Mixed Zones | - | Arithmetic mean of adjoining zone limits applies |
| Sensitive Uses | - | 65 dB CNEL exterior standard |
| Enforcement | - | Code Enforcement / Noise Abatement Administrator |
Highlighted rows indicate differences between cities.
Los Angeles FAQ
What are the industrial noise limits in Los Angeles?
Industrial and commercial operations must stay below 70 dBA during the day and 60 dBA at night, measured at the nearest residential property line.
How do I report industrial noise in Los Angeles?
File a complaint with Los Angeles Code Enforcement. They may conduct sound level measurements to determine if the source exceeds permitted levels.
San Diego FAQ
How is industrial noise measured?
Noise is measured as the one-hour average sound level at or beyond the property boundary, isolating only the noise attributable to the industrial source per SDMC §59.5.0401.
What penalties apply for industrial noise violations?
Violations can result in fines up to $1,000 per occurrence under the City's noise ordinance enforcement provisions.
Compare other topics
See how Los Angeles and San Diego compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool