Heritage & Protected Trees: Castaic vs Santa Monica
How do heritage & protected trees rules compare between Castaic, CA and Santa Monica, CA?
Castaic has fewer restrictions than Santa Monica.
Castaic, CA
Los Angeles County
LA County's Oak Tree Permit Ordinance (Chapter 22.174) protects oak trees in unincorporated areas. Heritage oak trees are recognized for their commemorative, horticultural, and historical significance. The ordinance aims to preserve and propagate the oak tree heritage. County forester reviews applications.
View full Castaic rules →Santa Monica, CA
Los Angeles County
Santa Monica protects trees through the Landmark Tree Program. Trees with exceptional characteristics may be designated by the Landmarks Commission as Landmark Trees, including private trees. SMMC Ch. 7.40 governs all public tree protection.
View full Santa Monica rules →Key Facts Comparison
| Fact | Castaic | Santa Monica |
|---|---|---|
| Heritage Oaks | Recognized for significance | - |
| Ordinance | Chapter 22.174 | - |
| Review | County forester inspection | - |
| Purpose | Preserve threatened oak heritage | - |
| Program | - | Landmark Tree Program |
| Authority | - | Landmarks Commission |
| Private Trees | - | May be designated at discretion |
| Code | - | SMMC Ch. 7.40 |
Highlighted rows indicate differences between cities.
Castaic FAQ
Are oak trees protected in LA County?
Yes. All native oaks with trunks 8+ inches in diameter (25+ inches circumference) are protected under the Oak Tree Permit Ordinance (Chapter 22.174). You need a permit before removing, relocating, or working near a protected oak.
What is the protected zone around an oak tree?
The drip line of the tree plus 5 feet in all directions. No grading, paving, trenching, or construction is allowed within this zone without an Oak Tree Permit. Root compaction from heavy equipment is also prohibited.
How do I get an Oak Tree Permit?
Apply through the LA County Department of Regional Planning at (213) 974-6411. An arborist report is typically required. The process includes review of alternatives to removal and may require replacement planting.
Santa Monica FAQ
How is a heritage tree designated?
Based on trunk size (typically 24+ inches), species rarity, age, or historical significance. Residents may nominate trees.
Can I ever remove a heritage tree?
Only with special approval, typically from city council or tree commission. Granted mainly for safety hazards.
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