Quiet Hours: Altadena vs Carson
How do quiet hours rules compare between Altadena, CA and Carson, CA?
Altadena and Carson have similar restriction levels.
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 →Carson, CA
Los Angeles County
Carson Municipal Code Article 4, Chapter 5 (Noise Control Ordinance) adopts Los Angeles County Code Title 12, Chapter 12.08 by reference. Nighttime quiet hours run 10:00 p.m. to 7:00 a.m. (weekdays) and 10:00 p.m. to 8:00 a.m. (weekends/holidays), with stricter exterior sound level limits during those hours for residential zones.
View full Carson rules →Key Facts Comparison
| Fact | Altadena | Carson |
|---|---|---|
| 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 | - |
| Weekday quiet hours | - | 10:00 p.m. - 7:00 a.m. |
| Weekend/holiday quiet hours | - | 10:00 p.m. - 8:00 a.m. |
| Residential nighttime limit | - | 45 dBA (Noise Zone I) |
| Governing code | - | LA County Code Title 12 Ch. 12.08 (adopted by CMC Art. 4 Ch. 5) |
| Enforcement | - | LA County Sheriff - Carson Station |
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.
Carson FAQ
Does Carson have its own noise ordinance?
No. Carson Municipal Code Article 4, Chapter 5 adopts Los Angeles County Code Title 12, Chapter 12.08 by reference, so the county's noise standards apply in Carson.
Who do I call about a noise complaint at night?
Call LA County Sheriff's Carson Station non-emergency line. They enforce both the LA County noise ordinance and Carson's public nuisance provisions.
What is the nighttime decibel limit in residential areas?
Under LA County Code §12.08.390, the nighttime limit for single-family residential (Noise Zone I) is 45 dBA at the property line.
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