Tree Trimming: Altadena vs Downey
How do tree trimming rules compare between Altadena, CA and Downey, CA?
Altadena and Downey have similar restriction levels.
Altadena, CA
Los Angeles County
Trimming protected oak trees (≥8 in DBH) requires an Oak Tree Permit if the work enters the protected zone or removes >25% of crown. Street trees in the public right-of-way are maintained by LA County Public Works.
View full Altadena rules →Downey, CA
Los Angeles County
Downey's Urban Forest Management Plan governs street and median tree maintenance. The Director oversees all parkway tree planting, pruning, and removal. Property owners may not trim or remove street trees without authorization.
View full Downey rules →Key Facts Comparison
| Fact | Altadena | Downey |
|---|---|---|
| Oak Permit Required | Yes if entering protected zone | - |
| Code Section | LA County 22.174.040 | - |
| Parkway Trees | Maintained by LA County DPW | - |
| Utility Pruning | Allowed with notice (PUC 911) | - |
| Street Trees | - | City-managed per UFMP |
| Private Trees | - | Owner responsibility |
| Authorization | - | Required for parkway trees |
| Master Plan | - | Street Tree Master Plan (STMP) |
Highlighted rows indicate differences between cities.
Altadena FAQ
Can I trim the oak in my Altadena backyard?
Light pruning of dead wood is generally fine, but anything entering the protected zone or removing >25% of crown needs an Oak Tree Permit under LA County Code 22.174.040.
Downey FAQ
Can I trim tree branches that hang over my property in Downey?
Downey's Urban Forest Management Plan governs street and median tree maintenance. The Director oversees all parkway tree planting, pruning, and removal. Property owners may not trim or remove street trees without authorization.
Do I need a permit to trim trees in Downey?
Street Trees: City-managed per UFMP. Private Trees: Owner responsibility. Authorization: Required for parkway trees. Master Plan: Street Tree Master Plan (STMP).
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