Outdoor Music: Altadena vs El Monte
How do outdoor music rules compare between Altadena, CA and El Monte, CA?
El Monte has fewer restrictions than Altadena.
Altadena, CA
Los Angeles County
LA County Code Chapter 12.08 restricts amplified sound and outdoor music in unincorporated areas to the same exterior noise standards by zone. Loudspeakers and amplified devices are specifically regulated under Section 12.08.450.
View full Altadena rules →El Monte, CA
Los Angeles County
El Monte Municipal Code Chapter 8.36 prohibits noise from radios, musical instruments, TVs, phonographs, or other sound-reproducing devices that exceed the noise limit at the property line of any receiving property.
View full El Monte rules →Key Facts Comparison
| Fact | Altadena | El Monte |
|---|---|---|
| Code Section | §12.08.450 | EMMC Ch. 8.36 |
| Residential Limit | 50 dBA day / 45 dBA night | - |
| Measurement | At property line | - |
| Fine | Up to $1,000 | - |
| Day Limit | - | 65 dBA at property line (7 AM–10 PM) |
| Night Limit | - | 60 dBA at property line (10 PM–7 AM) |
| Ambient Rule | - | No more than +5 dBA over ambient for 15 min |
| Enforcement | - | El Monte PD: (626) 580-2100 |
Highlighted rows indicate differences between cities.
Altadena FAQ
Can I play amplified music outdoors in unincorporated LA County?
Yes, but the sound cannot exceed exterior noise standards at the neighboring property line — 50 dBA during the day and 45 dBA at night in residential zones under Section 12.08.450.
Do I need a permit for an outdoor event with music?
Large outdoor events with amplified sound in unincorporated LA County may require a temporary use permit from the Department of Regional Planning, especially if attendance exceeds normal gathering sizes.
El Monte FAQ
Can I play loud music outside in El Monte?
Outdoor music must not exceed 65 dBA at the receiving property line during the day or 60 dBA at night. It also must not exceed ambient levels by more than 5 dBA for 15 minutes.
What if my neighbor plays loud music?
Contact the El Monte Police Department non-emergency line at (626) 580-2100 to file a noise complaint.
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