Amplified Music & Events: Altadena vs Los Angeles
How do amplified music & events rules compare between Altadena, CA and Los Angeles, CA?
Altadena has fewer restrictions than Los Angeles.
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 →Los Angeles, CA
Los Angeles County
Amplified sound audible beyond 150 feet of the property line in a residential zone or within 500 feet of one is a violation under LAMC 112.01. Sound exceeding ambient levels by more than 5 dB at any neighboring occupied property is also prohibited. LAMC 41.57 separately bans loud and raucous amplified noise citywide.
View full Los Angeles rules →Key Facts Comparison
| Fact | Altadena | Los Angeles |
|---|---|---|
| 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 | - |
| Distance Rule | - | Audible beyond 150 ft = violation |
| dB Standard | - | Ambient +5 dB max at neighbor property |
| Code Sections | - | LAMC 112.01, 41.57 |
| Enforcement | - | LAPD Noise Enforcement Team |
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.
Los Angeles FAQ
Do I need a permit for amplified sound in LA?
Yes. LAMC Section 115.02 requires authorization to operate sound amplifying equipment. Unauthorized use that is audible beyond 200 feet is prohibited.
What is the noise limit at LA entertainment venues?
Section 112.06 caps sound at 95 dBA at any customer-occupied point. Venues must post hearing warning signs near each public entrance.
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