Tree Removal & Heritage Trees: Altadena vs Glendale
How do tree removal & heritage trees rules compare between Altadena, CA and Glendale, CA?
Glendale has fewer restrictions than Altadena.
Altadena, CA
Los Angeles County
Oak trees (genus Quercus) with a trunk circumference of 25 inches or more (8-inch diameter at 4.5 ft above grade) are protected — removal, damage, or encroachment into the protected zone requires an Oak Tree Permit under LA County Code Chapter 22.174.
View full Altadena rules →Glendale, CA
Los Angeles County
Glendale may require permits for removal of significant trees on private property. Trees in the public right-of-way are protected. The city's tree preservation provisions aim to maintain the urban canopy, especially in hillside zones.
View full Glendale rules →Key Facts Comparison
| Fact | Altadena | Glendale |
|---|---|---|
| Code Section | LA County Code Ch. 22.174 | - |
| Protected Size | ≥8 in DBH / 25 in circumference | - |
| Protected Zone | 5 ft outside dripline | - |
| Replacement | 2:1 typical | May be required for mature tree removal |
| Heritage Oak | ≥36 in diameter | - |
| Private Trees | - | Permit may be required for significant trees |
| Public Trees | - | City authorization required |
| Native Oaks | - | Protected under California law |
Highlighted rows indicate differences between cities.
Altadena FAQ
Do I need a permit to remove an oak in Altadena?
Yes if the oak is 8 inches in diameter or larger at 4.5 feet above grade — LA County Code Ch. 22.174 (Oak Tree Permits) applies.
Glendale FAQ
Do I need a permit to remove a tree in Glendale?
It depends on the tree's size, species, and location. Significant trees and those in hillside zones may require a permit. Contact the Planning Division.
Are oak trees protected in Glendale?
Yes. Native oak trees are protected under California law. Removal typically requires a permit and replacement planting.
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