Los Angeles County, CA Landscaping Rules: Tree Trimming (2026)
Key Facts
- Private Trees
- Generally no permit needed
- Oak Trees
- Permit required for 8+ inch diameter
- Street Trees
- County public works manages
- Reference
- Chapter 22.174 (Oaks)
Summary
Tree trimming in unincorporated LA County is generally unrestricted for private property, except for protected oak trees. Any cutting or pruning of oak trees 8+ inches diameter requires an Oak Tree Permit under Chapter 22.174. Street trees are managed by county public works.
4291. (a) A person who owns, leases, controls, operates, or maintains a building or structure in the state responsibility area shall at all times do all of the following: (1) (A) Maintain defensible space of 100 feet from each side and from the front and rear of the structure, but not beyond the property line ... (2) Remove that portion of a tree that extends within 10 feet of the outlet of a chimney or stovepipe. (3) Maintain a tree, shrub, or other plant adjacent to or overhanging a building free of dead or dying wood. (4) Maintain the roof of a structure free of leaves, needles, or other vegetative materials.
Full Breakdown
Tree trimming on private property in unincorporated LA County is generally unrestricted for most species: homeowners can trim their own trees without a permit. However, oak trees are protected under the Oak Tree Permit Ordinance (Chapter 22.174), and trimming that damages the health of a protected oak may require a permit. Trees in the public right-of-way are maintained by the LA County Department of Public Works Road Maintenance Division. Neighbors may trim branches that overhang their property line under California Civil Code, but cannot kill the tree. Utility companies have the right to trim trees near power lines.
Violations & Fines
Unauthorized trimming of protected oak trees in a manner that damages the tree can result in fines up to $1,000 per tree under the Oak Tree Ordinance, plus replacement costs. Damaging public trees is subject to restitution at replacement value (often $5,000-$50,000 for mature trees). Topping a neighbor's tree in a way that kills it creates civil liability for replacement value.
Frequently Asked Questions
Do I need a permit to trim trees on my property in LA County?
Can I trim my neighbor's tree branches that hang over my property?
Who trims trees near power lines?
Sources & Official References
Other rules in Los Angeles County
California rules heatmap·Compare Los Angeles County to another location·View the California landscaping rules overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.