Tree Replacement Requirements: Altadena vs Carson
How do tree replacement requirements rules compare between Altadena, CA and Carson, CA?
Altadena and Carson have similar restriction levels.
Altadena, CA
Los Angeles County
The LA County Oak Tree Permit Ordinance encourages replanting and propagation of oak trees. When oak tree removal is approved, replacement planting conditions may be imposed. LA County Planning is updating the ordinance to further encourage planting new oak trees and redesigning projects to preserve existing trees.
View full Altadena rules →Carson, CA
Los Angeles County
Replacement of parkway trees in Carson is administered by the City Manager / Public Works Division under CMC Article 3 Chapter 9. When a parkway tree is removed — including for utility-line clearance — the City controls whether and how it is replaced, and the species must come from the Authorized List of Carson Trees in the Parkway Tree Master Plan.
View full Carson rules →Key Facts Comparison
| Fact | Altadena | Carson |
|---|---|---|
| Replacement | May be required as permit condition | - |
| Ordinance Update | In progress, more replanting focus | - |
| Propagation | Encouraged by county program | - |
| Oak Woodlands | Conservation management plan applies | - |
| Replacement authority | - | Carson Public Works Division (CMC Art. 3 Ch. 9) |
| Species restriction | - | Authorized List of Carson Trees (Parkway Tree Master Plan, Exhibit A) |
| Utility-clearance removals | - | Replacement is at Public Works' discretion |
| MWELO trigger | - | Landscapes ≥500 sq ft new/rehabilitated (CCR Title 23 §490) |
| Unauthorized planting | - | May be removed by City without consent |
Highlighted rows indicate differences between cities.
Altadena FAQ
How many replacement trees are required for oak removal?
Typically 2:1 to 10:1 ratio depending on the removed tree's size, health, and significance. Unauthorized removal is penalized at the highest replacement ratios. The Department of Regional Planning sets the exact ratio.
What species can I plant as replacements?
The same species as the removed tree or another approved native oak species (coast live oak, valley oak, interior live oak, canyon live oak). Replacement trees must be at least 15-gallon container size.
How long do I have to maintain replacement trees?
A minimum 5-year maintenance and monitoring period with annual reports to the Department of Regional Planning. Failed trees must be replanted. Irrigation must be provided during the establishment period.
Carson FAQ
If a utility company removes a parkway tree near my house, do I get a replacement?
Carson's Chapter 9 says utility-line-clearance removals are replaced at the discretion of the Public Works Division — there is no automatic 1-for-1 statutory replacement guarantee. Contact Public Works to request a replacement and to confirm the species comes from the Authorized List.
Can I choose what tree goes in the parkway in front of my home?
Choice is limited. The City Manager has authority to designate the species planted in any parkway, and all plantings must conform to the Authorized List of Carson Trees in the Parkway Tree Master Plan (Exhibit A to Chapter 9). You must apply for a planting permit from Public Works first.
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