Los Angeles vs Norwalk
How do tree ordinances rules compare between Los Angeles, CA and Norwalk, CA?
Los Angeles and Norwalk have similar restriction levels.
Los Angeles, CA
Los Angeles County
The City of Los Angeles protects native trees and shrubs under LAMC Section 46.00 (Protected Tree and Shrub Regulations) and Article 6 of the LAMC. Protected species include native oaks, Southern California Black Walnut, Western Sycamore, and California Bay trees measuring 4 inches or more in cumulative diameter at 4.5 feet above ground. Removal requires a permit from the Board of Public Works with replacement planting at a 4:1 ratio.
View full Los Angeles rules →Norwalk, CA
Los Angeles County
Los Angeles County protects significant trees in unincorporated areas through its Oak Tree Ordinance (Title 22, Chapter 22.174) and related regulations. The ordinance requires permits for removal or relocation of oak trees and other protected species. Heritage trees receive enhanced protection. Mitigation including replacement planting is required when removal is approved.
View full Norwalk rules →Key Facts Comparison
| Fact | Los Angeles | Norwalk |
|---|---|---|
| Governing Code | LAMC Section 46.00 and Article 6 | LA County Code Title 22, Chapter 22.174 (Oak Tree Ordinance) |
| Protected Species | Native oaks, Black Walnut, Western Sycamore, California Bay | - |
| Size Threshold | 4 inches cumulative diameter at 4.5 feet above ground | 8 inches diameter at breast height (4.5 feet) |
| Replacement Ratio | 4:1 minimum (Board of Public Works policy) | Typically 2:1 or higher |
| Permit Authority | Board of Public Works | - |
| Tree Expert Report | Required for permit applications | - |
| Permit Required | - | Yes, for removal, relocation, or encroachment |
| Arborist Report | - | Required for permit applications |
| Penalties | - | Up to $1,000 per tree plus replacement requirements |
Highlighted rows indicate differences between cities.
Los Angeles FAQ
What trees are protected in the City of Los Angeles?
Native oaks (Valley Oak, California Live Oak), Southern California Black Walnut, Western Sycamore, and California Bay trees measuring 4 inches or more in cumulative diameter at 4.5 feet above ground are protected under LAMC Section 46.00.
What is the replacement ratio for removing a protected tree in LA?
The Board of Public Works requires a minimum 4:1 replacement ratio for protected tree removal. This means four replacement trees must be planted for each protected tree removed.
How do I apply for a tree removal permit in Los Angeles?
Applications are submitted to the Urban Forestry Division and must include a report from a certified Tree Expert. The Board of Public Works reviews and decides on permit applications.
Norwalk FAQ
What trees are protected under LA County's tree ordinance?
Native oak trees with trunks 8 inches or more in diameter at breast height are protected under the Oak Tree Ordinance. Heritage oaks and trees in Significant Ecological Areas receive additional protection.
Do I need a permit to remove an oak tree on my property in unincorporated LA County?
Yes, you must obtain an oak tree permit from the Department of Regional Planning before removing, relocating, or encroaching upon a protected oak tree. An arborist report is required with your application.
What happens if I remove a protected oak without a permit?
Unauthorized removal can result in fines up to $1,000 per tree, required replacement planting at enhanced ratios, and potential criminal prosecution.
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