Tree Removal Permits: Altadena vs Topanga
How do tree removal permits rules compare between Altadena, CA and Topanga, CA?
Altadena and Topanga have similar restriction levels.
Altadena, CA
Los Angeles County
Removing or significantly damaging a native oak with an 8-inch trunk diameter (25-inch circumference) at 4.5 ft above grade requires an Oak Tree Permit from LA County Planning under Section 22.174.040.
View full Altadena rules →Topanga, CA
Los Angeles County
Removing any oak tree 8+ inches in diameter (25+ inches circumference) in unincorporated LA County requires an Oak Tree Permit under Chapter 22.174. The ordinance protects all species of the oak genus. Damage includes burning, toxic substances, trenching, paving, and changing natural grade. Violations: $5-$200 fine and/or up to 50 days jail.
View full Topanga rules →Key Facts Comparison
| Fact | Altadena | Topanga |
|---|---|---|
| Code Section | LA County Code 22.174.040 | - |
| Protected Size | ≥8 in DBH | 8+ inch diameter (25+ circumference) |
| Permit Authority | LA County Planning | - |
| Required | Arborist report | - |
| Penalty | Up to $1,000/tree + 2:1 replacement | - |
| Multi-Trunk | - | 38+ combined circumference of 2 trunks |
| Permit Required | - | For cutting, removing, or damaging |
| Penalties | - | $5-$200 fine, up to 50 days jail |
Highlighted rows indicate differences between cities.
Altadena FAQ
Can I cut down an oak on my Altadena property?
Only with an Oak Tree Permit from LA County Planning if the oak is ≥8 in diameter at breast height — Section 22.174.040.
Topanga FAQ
Do I need a permit to remove a tree in LA County?
Only for protected oak trees (native oaks 8+ inches in trunk diameter). Non-oak trees on private property generally do not require a permit. Contact the Department of Regional Planning at (213) 974-6411 to verify your tree's status.
Can I remove a dead or dangerous oak tree without a permit?
Emergency removal of an immediately hazardous tree is allowed but you must provide after-the-fact documentation (photos, arborist report) to the Department of Regional Planning within 5 days.
What if I want to build where an oak tree is?
The department will review whether the project can be redesigned to preserve the tree. If removal is the only option, expect replacement planting requirements (2:1 to 10:1 ratio), an arborist report, and a monitoring period.
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