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🌳 Tree Protection/Protected Tree Species

Norwalk vs Santa Clarita

How do protected tree species rules compare between Norwalk, CA and Santa Clarita, CA?

Norwalk and Santa Clarita have similar restriction levels.

Norwalk, CA

Los Angeles County

Heavy Restrictions

LA County Code Title 22.174 (formerly 22.56.2050) protects native oaks with eight inches or larger trunk diameter at breast height. An Oak Tree Permit from Regional Planning is required before pruning more than 25 percent or removing any protected oak.

View full Norwalk rules β†’

Santa Clarita, CA

Los Angeles County

Heavy Restrictions

LA County Code Title 22.174 (formerly 22.56.2050) protects native oaks with eight inches or larger trunk diameter at breast height. An Oak Tree Permit from Regional Planning is required before pruning more than 25 percent or removing any protected oak.

View full Santa Clarita rules β†’

Key Facts Comparison

FactNorwalkSanta Clarita
Code citationLA County Code Title 22.174LA County Code Title 22.174
Trigger size8 inches DBH or larger8 inches DBH or larger
Permit issuerDepartment of Regional PlanningDepartment of Regional Planning
Pruning thresholdMore than 25 percent canopyMore than 25 percent canopy
Replacement ratio2:1 to 10:1 typical2:1 to 10:1 typical

Highlighted rows indicate differences between cities.

Norwalk FAQ

Does the oak ordinance apply to dead trees?

A confirmed dead oak generally does not require a permit, but a certified arborist report and Regional Planning concurrence are required first. Hazardous live oaks may qualify for an emergency permit with reduced fees and expedited review.

What if construction must encroach on a protected oak?

Submit an Oak Tree Permit application with arborist-prepared protection plan, root-zone fencing, and impact analysis. Regional Planning may require redesign, deep watering, or replacement plantings before approving encroachment.

Santa Clarita FAQ

Does the oak ordinance apply to dead trees?

A confirmed dead oak generally does not require a permit, but a certified arborist report and Regional Planning concurrence are required first. Hazardous live oaks may qualify for an emergency permit with reduced fees and expedited review.

What if construction must encroach on a protected oak?

Submit an Oak Tree Permit application with arborist-prepared protection plan, root-zone fencing, and impact analysis. Regional Planning may require redesign, deep watering, or replacement plantings before approving encroachment.

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