Quiet Hours: Altadena vs Torrance
How do quiet hours rules compare between Altadena, CA and Torrance, CA?
Altadena has fewer restrictions than Torrance.
Altadena, CA
Los Angeles County
Altadena is unincorporated, so LA County Title 12 Chapter 12.08 (Noise Control) applies. Nighttime exterior limits run 10:00 p.m. to 7:00 a.m. with stricter dB caps; daytime runs 7:00 a.m. to 10:00 p.m.
View full Altadena rules →Torrance, CA
Los Angeles County
Torrance Municipal Code Chapter 46 (Division 4, Chapter 6) prohibits loud, unnecessary, or unusual noise that disturbs the peace. Residential noise limits are 65 dBA daytime and 55 dBA nighttime in most areas (Region 2). Near refineries (Region 1), limits are 70 dBA day and 65 dBA night. Any noise exceeding ambient by more than 5 dB at residential property lines is prima facie evidence of violation.
View full Torrance rules →Key Facts Comparison
| Fact | Altadena | Torrance |
|---|---|---|
| Code Section | LA County Code Ch. 12.08 (Title 12) | - |
| Nighttime Window | 10:00 p.m. – 7:00 a.m. | - |
| Residential Night Limit | 45 dBA (R-1) | - |
| Residential Day Limit | 50 dBA (R-1) | - |
| Ambient Exceedance Rule | +5 dB over ambient | - |
| Daytime (Region 2) | - | 65 dBA |
| Nighttime (Region 2) | - | 55 dBA |
| Property Line | - | Ambient + 5 dB max |
| Code | - | TMC Div. 4, Ch. 6 |
Highlighted rows indicate differences between cities.
Altadena FAQ
What are Altadena's quiet hours?
10 p.m. to 7 a.m. under LA County Code Ch. 12.08 — Altadena is unincorporated so LA County's noise ordinance applies.
How loud can my backyard be at night?
Single-family residential exterior noise is capped at 45 dBA from 10 p.m. to 7 a.m. per Section 12.08.390.
Torrance FAQ
What are the noise limits in Torrance residential areas?
65 dB(A) during the day and 55 dB(A) at night in most residential areas (Region 2). Near refineries (Region 1), limits are 70/65 dB(A) day/night.
When can powered gardening equipment be used?
Monday through Friday during business hours, Saturdays 9 AM-5 PM. Prohibited on Sundays and holidays except 10 AM-4 PM for resident homeowners only.
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