San Diego County, CA Landscaping Rules: Tree Trimming (2026)
Key Facts
- Private-yard trimming
- Generally no county permit
- Right-of-way trees
- Permit via County Code Title 7, Div. 1, Ch. 5
- Permitting agency
- County Department of Public Works
- Fire areas
- Dead-branch removal required for defensible space
- Protected habitat
- Extra limits under Resource Protection Ordinance
Summary
Trimming trees on your own private land in unincorporated San Diego County is generally unregulated, but trees in the county road right-of-way are governed by County Code Title 7, Division 1, Chapter 5 and require a tree permit from the Department of Public Works. Defensible-space rules also require trimming dead branches near structures.
99] ( Chapter 3 added by Stats. 1965, Ch. 1144. ) 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, except as provided in subparagraph (B). The amount of fuel modification necessary shall consider the flammability of the structure as affected by building material, building standards, location, and type of vegetation. Fuels shall be maintained and spaced in a condition so that a wildfire would be unlikely to ignite the structure.
Full Breakdown
For most private-property trees in unincorporated San Diego County, routine trimming and pruning do not require a county permit. The main regulated situations are: (1) trees within the county road right-of-way, and (2) trees within sensitive habitat or resource-protection areas. Trees located in or overhanging a County road right-of-way are governed by County Code Title 7, Division 1, Chapter 5, administered by the County Department of Public Works (DPW). Any planting, trimming, or removal of right-of-way trees requires a DPW tree permit; the species must be approved by the DPW Director, and permittees agree to trim or remove plantings when DPW directs that it is needed for roadway improvement, grading, realignment, sight-distance, or safety.
Separately, in fire-prone areas, defensible-space and combustible-vegetation rules require removing dead, dying, or diseased branches and limbs and maintaining clearance around structures and chimneys. Trees on parcels subject to a biological open-space easement or the Resource Protection Ordinance may have additional limits on cutting native vegetation. For purely ornamental pruning of a healthy tree on your own lot away from roads and protected habitat, no county approval is typically needed.
Violations & Fines
Trimming or removing a right-of-way tree without a DPW tree permit can result in stop-work or restoration requirements. Damaging protected native vegetation in a resource-protection or open-space-easement area may trigger code enforcement and required restoration.
Frequently Asked Questions
Do I need a permit to trim a tree in my own yard?
Who handles trees along the county road?
Sources & Official References
Other rules in San Diego County
California rules heatmap·Compare San Diego County to another location·View the California landscaping rules overview
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