Tree Removal & Heritage Trees: Altadena vs Santa Monica
How do tree removal & heritage trees rules compare between Altadena, CA and Santa Monica, CA?
Altadena and Santa Monica 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 →Santa Monica, CA
Los Angeles County
Santa Monica Municipal Code Chapter 7.40 (Tree Code) strictly protects public trees. No person may remove, cut, trim, or interfere with any tree on public property without a City permit. The Landmark Tree Program protects exceptional trees on both public and private property. Permits expire in 30 days.
View full Santa Monica rules →Key Facts Comparison
| Fact | Altadena | Santa Monica |
|---|---|---|
| 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 | - |
| Heritage Oak | ≥36 in diameter | - |
| Public Trees | - | Permit required for any work |
| Permit Duration | - | 30 days |
| Landmark Trees | - | Public + private protection |
| Code | - | SMMC Ch. 7.40 |
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.
Santa Monica FAQ
Can I remove a tree on my property in Santa Monica?
The City generally does not regulate trees on private property. However, trees designated as Landmarks by the Landmarks Commission (which can include private trees) are protected. Trees in Coastal Zone development areas may also require review.
How do I request removal of a public street tree?
Submit a request through the City's 311 system. The Urban Forest Task Force may review the request. Public tree removal requires a permit and is subject to the Tree Code (Chapter 7.40).
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