Construction Hours: Altadena vs Downey
How do construction hours rules compare between Altadena, CA and Downey, CA?
Altadena and Downey have similar restriction levels.
Altadena, CA
Los Angeles County
LA County Code Section 12.08.440 limits construction noise in residential areas to 7:00 a.m.–8:00 p.m. weekdays and 8:00 a.m.–8:00 p.m. on Saturdays. No construction is allowed on Sundays or county holidays.
View full Altadena rules →Downey, CA
Los Angeles County
Downey Municipal Code Section 4600 restricts construction noise in residential zones between 10 PM and 7 AM. Construction is effectively permitted from 7 AM to 10 PM on all days in residential areas.
View full Downey rules →Key Facts Comparison
| Fact | Altadena | Downey |
|---|---|---|
| Code Section | LA County Code 12.08.440 | DMC §4600 |
| Weekday Hours | 7 a.m. – 8 p.m. | - |
| Saturday Hours | 8 a.m. – 8 p.m. | - |
| Sunday/Holiday | Prohibited | - |
| Allowed Hours | - | 7 AM–10 PM |
| Restricted Hours | - | 10 PM–7 AM |
| Weekend/Holiday | - | Same hours apply |
| Zones | - | R-1, R-2, R-3 residential |
Highlighted rows indicate differences between cities.
Altadena FAQ
When can contractors start work in Altadena?
7 a.m. on weekdays, 8 a.m. on Saturday — Sundays and county holidays are off-limits under LA County Code 12.08.440.
Downey FAQ
What are the construction hours in Downey?
Construction using power tools and equipment is allowed from 7 AM to 10 PM in residential zones. Work between 10 PM and 7 AM that disturbs neighbors is prohibited under Section 4600.
Are there different hours on weekends in Downey?
Downey's noise ordinance applies the same 7 AM-10 PM window on all days, including weekends and holidays, for residential zones.
Compare other topics
See how Altadena and Downey compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool