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Chino Hills, CA Tree Protection: Protected Tree Species (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Protected species
Sycamore, Live Oak, Black Walnut, Scrub Oak
Size threshold
4 inches DBH or greater
Applies to
Undeveloped land, Fire Hazard Overlay
Permit required to remove
Yes, City tree permit
Mitigation
Replacement ratio or Tree Fund payment

Summary

Chino Hills' tree preservation ordinance names four native species as protected: California Sycamore, California Live Oak, California Black Walnut, and Coastal Scrub Oak. Under Municipal Code Section 16.90.020(G), any of those trees at four inches or more in trunk diameter cannot be removed without a City tree permit.

"Native tree" means any of the listed trees below that has a four-inch in diameter or greater at DBH, as defined above:1.California Sycamore;2.California Live Oak;3.California Black Walnut;4.Coastal Scrub Oak.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 61).

Full Breakdown

020(G) of the Chino Hills Development Code defines a native tree by species rather than by size alone: California Sycamore, California Live Oak, California Black Walnut, and Coastal Scrub Oak, each protected once it reaches four inches or greater in diameter at breast height (DBH). 020(E), meaning young native trees of these four species gain protection long before they would otherwise qualify as heritage trees. 010(A) applies native-tree protection to trees on undeveloped private property citywide and to privately owned developed property within the City's Fire Hazard Overlay District map.

060, including disease, hazard to structures or utilities, unreasonable interference with development, consistency with good urban forestry practices, or a fire-defensible-space improvement confirmed by the Fire Department. 070 requires mitigation, generally replacement at a set ratio, when a permit authorizes removal, with the Protected Tree Replacement Fund available as an alternative to on-site replacement.

Violations & Fines

Removing a protected native tree species without a permit triggers an administrative citation under Chapter 1.18 and public nuisance abatement under Chapter 1.36 per Section 16.90.140, and the City withholds grading, building, and occupancy permits for that lot until a tree permit covering the removal is obtained.

Frequently Asked Questions

Which tree species are protected in Chino Hills?
Section 16.90.020(G) protects four native species once they reach four inches in diameter at breast height: California Sycamore, California Live Oak, California Black Walnut, and Coastal Scrub Oak. That threshold is far lower than the 44-inch cumulative diameter required for a tree to separately qualify as a protected heritage tree.
Where does Chino Hills' native tree protection apply?
Section 16.90.010(A) applies it to native trees on undeveloped private property anywhere in the city, and to developed private property located within the City's Fire Hazard Overlay District map. Native trees on developed property outside that overlay are exempt from the removal-permit requirement under Section 16.90.030.
Can I remove a protected native tree if it's unhealthy?
Yes. Section 16.90.060 lets the Director grant a tree permit if a City-approved certified arborist declares the tree dead or dying, or if it poses a disease or falling hazard, or interferes with structures or utility service. Mitigation, usually replacement planting, is still generally required under Section 16.90.070.

Sources & Official References

Other rules in Chino Hills

All Chino Hills rules

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