Tree Trimming: Altadena vs Los Angeles
How do tree trimming rules compare between Altadena, CA and Los Angeles, CA?
Altadena and Los Angeles have similar restriction levels.
Altadena, CA
Los Angeles County
Trimming protected oak trees (≥8 in DBH) requires an Oak Tree Permit if the work enters the protected zone or removes >25% of crown. Street trees in the public right-of-way are maintained by LA County Public Works.
View full Altadena rules →Los Angeles, CA
Los Angeles County
Street trees are maintained by StreetsLA Urban Forestry Division and residents may not trim or remove them without authorization. Private tree trimming does not require a permit unless the tree is a protected species under LAMC 46.00. Protected species include CA Live Oak, Southern CA Black Walnut, Western Sycamore, and CA Bay. Improper trimming of a protected tree can constitute removal under the ordinance.
View full Los Angeles rules →Key Facts Comparison
| Fact | Altadena | Los Angeles |
|---|---|---|
| Oak Permit Required | Yes if entering protected zone | - |
| Code Section | LA County 22.174.040 | LAMC 46.00 |
| Parkway Trees | Maintained by LA County DPW | - |
| Utility Pruning | Allowed with notice (PUC 911) | - |
| Street Trees | - | City-maintained, no unauthorized trimming |
| Protected Species | - | Oak, Walnut, Sycamore, Bay |
| Private Trees | - | No permit unless protected species |
| Agency | - | StreetsLA Urban Forestry Division |
Highlighted rows indicate differences between cities.
Altadena FAQ
Can I trim the oak in my Altadena backyard?
Light pruning of dead wood is generally fine, but anything entering the protected zone or removing >25% of crown needs an Oak Tree Permit under LA County Code 22.174.040.
Los Angeles FAQ
Can I trim tree branches that hang over my property in los Angeles?
Street trees are maintained by StreetsLA Urban Forestry Division and residents may not trim or remove them without authorization. Private tree trimming does not require a permit unless the tree is a protected species under LAMC 46.00. Protected species include CA Live Oak, Southern CA Black...
Do I need a permit to trim trees in los Angeles?
Street Trees: City-maintained, no unauthorized trimming. Protected Species: Oak, Walnut, Sycamore, Bay. Private Trees: No permit unless protected species. Code Section: LAMC 46.00.
Compare other topics
See how Altadena and Los Angeles compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool