Tree Trimming: Altadena vs Palmdale
How do tree trimming rules compare between Altadena, CA and Palmdale, CA?
Altadena and Palmdale 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 →Palmdale, CA
Los Angeles County
Palmdale may have protected tree ordinances requiring permits before removal or significant trimming. Heritage and native oaks often protected.
View full Palmdale rules →Key Facts Comparison
| Fact | Altadena | Palmdale |
|---|---|---|
| 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) | - |
| Protected Trees | - | Permit required |
| Heritage Size | - | Typically 12 to 24" trunk |
| Replacement | - | 2:1 or 3:1 ratio |
| Street Trees | - | City property |
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.
Palmdale FAQ
Can I remove a tree on my property?
Check if it’s a protected species or above the size threshold. A permit may be required.
What about neighbor’s tree branches?
You can trim branches that overhang onto your property up to the property line.
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