Tree Trimming: Altadena vs Glendale
How do tree trimming rules compare between Altadena, CA and Glendale, CA?
Altadena and Glendale 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 →Glendale, CA
Los Angeles County
Glendale requires property owners to maintain trees that overhang public rights-of-way. Minimum clearance is 8 feet over sidewalks and 14 feet over streets. City-maintained trees require authorization before any trimming.
View full Glendale rules →Key Facts Comparison
| Fact | Altadena | Glendale |
|---|---|---|
| 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) | - |
| Sidewalk Clearance | - | 8 feet minimum |
| Street Clearance | - | 14 feet minimum |
| City Trees | - | Authorization required for any work |
| Enforcement | - | Code Compliance / Public Works |
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.
Glendale FAQ
Am I responsible for tree branches over the sidewalk?
Yes. Property owners must maintain at least 8 feet of clearance over sidewalks and 14 feet over streets for trees on their property.
Can I trim a city tree near my house?
No. City trees in the right-of-way require authorization. Contact Glendale Public Works for any tree work needed.
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