Tree Removal & Heritage Trees: Altadena vs Pasadena
How do tree removal & heritage trees rules compare between Altadena, CA and Pasadena, CA?
Altadena and Pasadena have similar restriction levels.
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 →Pasadena, CA
Los Angeles County
Pasadena requires a tree removal permit for protected trees on private property. Public trees and landmark trees have additional protections. Replacement planting may be required.
View full Pasadena rules →Key Facts Comparison
| Fact | Altadena | Pasadena |
|---|---|---|
| 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 | Required when removal approved |
| Heritage Oak | ≥36 in diameter | - |
| Permit | - | Required for protected trees |
| Heritage Trees | - | Highest protection level |
| Fine | - | Up to 3x appraised tree value |
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.
Pasadena FAQ
Do I need a permit to remove a tree in Pasadena?
Yes, for protected trees above a certain size or species. The Urban Forestry Division reviews applications.
What is the penalty for unauthorized tree removal?
Fines up to three times the appraised value of the tree plus mandatory replacement planting.
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