Amplified Music & Events: Altadena vs El Monte
How do amplified music & events rules compare between Altadena, CA and El Monte, CA?
Altadena has fewer restrictions than El Monte.
Altadena, CA
Los Angeles County
Amplified music and sound devices in unincorporated LA County are regulated under Chapter 12.08 (Noise Control). Residential areas: 45 dB nighttime (10 PM-7 AM), 50 dB daytime. Sound amplifying equipment in or within 500 ft of residential zones is restricted for commercial purposes.
View full Altadena rules →El Monte, CA
Los Angeles County
El Monte prohibits noise exceeding ambient levels by more than 5 dBA for 15+ cumulative minutes per hour at any property line (Ch. 8.36). Hosting parties or gatherings in residential neighborhoods that constitute a noise disturbance is specifically prohibited.
View full El Monte rules →Key Facts Comparison
| Fact | Altadena | El Monte |
|---|---|---|
| Residential Night | 45 dB (10 PM-7 AM) | - |
| Residential Day | 50 dB (7 AM-10 PM) | - |
| Commercial Use | Restricted near residential | - |
| Reference | Title 12, Chapter 12.08 | - |
| Standard | - | Ambient +5 dBA for 15 min/hr |
| Parties | - | Noise disturbance specifically banned |
| Nighttime | - | 50 dBA limit 10 PM - 7 AM |
| Code | - | EMMC Ch. 8.36 |
Highlighted rows indicate differences between cities.
Altadena FAQ
What are the noise hours for amplified music in LA County?
Amplified sound must not be audible beyond the property line between 10 PM and 7 AM weekdays, or 10 PM and 8 AM weekends. Daytime amplified sound cannot exceed 5 dB above ambient noise at the property line.
Do I need a permit for a party with amplified music?
Not for an occasional private party that stays within noise limits. Large events or recurring parties may require a Temporary Use Permit from the Department of Regional Planning at (213) 974-6411.
How do I file a noise complaint about amplified music?
Call the LA County Sheriff's non-emergency line at (323) 267-4800 for immediate noise disturbances. For ongoing issues, file a code enforcement complaint at (888) 756-2700.
El Monte FAQ
Can I have a loud party in El Monte?
Noise exceeding ambient levels by 5+ dB at property lines for 15 minutes is unlawful. Noise disturbance assemblies are public nuisances.
Can the city charge me for a noise response?
Yes. Responsible persons may be held civilly liable for all costs the city incurs responding to noise disturbance assemblies.
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