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San Bernardino County, CA Landscaping Rules: Tree Removal & Heritage Trees (2026)

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

Tree removal permit rules in San Bernardino County, CA, sometimes called heritage tree, protected tree, or street tree ordinances, list which trees require a permit before you can cut them down.

Key Facts

Trigger size
Native tree, 6 in. stem diameter
Permit needed
Tree or Plant Removal Permit
Approving official
Director or Fire Chief
Area covered
Unincorporated Valley and Mountain Regions
No permit
Unlawful public nuisance, code enforcement

Summary

Removing a native tree six inches or more in trunk diameter in the unincorporated county requires a Tree or Plant Removal Permit under County Code § 88.01.040 and § 88.01.050, reviewed by the Director or Fire Chief.

City-specific rules exist: Rialto, Fontana, San Bernardino, Chino, Rancho Cucamonga, Ontario, and Hesperia have their own tree removal & heritage trees rules that differ from San Bernardino County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

(b) Regulated Trees. The following trees shall only be removed with an approved Tree or Plant Removal Permit issued in compliance with § 88.01.050 (Tree or Plant Removal Permits): (1) Native Trees. A living, native tree with a six inch or greater stem diameter or 19 inches in circumference measured four and one-half feet above natural grade level.

Source: CDFW Joshua Tree ConservationView official code

Full Breakdown

Under San Bernardino County Code § 88.01.070(b), any living native tree with a stem diameter of six inches or more (19 inches in circumference, measured 4.5 feet above grade) is a regulated tree, and removing one anywhere in the unincorporated Valley or Mountain Region requires a Tree or Plant Removal Permit issued under § 88.01.050. The Director approves removals tied to a building, grading, or land use permit, or standalone requests; the Fire Chief approves removals sought to mitigate fire hazards. Reviewers can require an arborist's certification, impose replacement or transplanting conditions, and set a permit expiration date. Cutting a regulated tree without the permit is an unlawful public nuisance under § 86.09.050.

Violations & Fines

Removing a regulated tree without a Tree or Plant Removal Permit is an unlawful public nuisance under § 86.09.050, subject to County code enforcement action and abatement.

Frequently Asked Questions

Which trees need a permit before removal in unincorporated San Bernardino County?
Any living native tree with a stem diameter of six inches or more (19 inches in circumference at 4.5 feet above grade), plus qualifying palm tree windrows, under County Code § 88.01.070(b).
Who approves a Tree or Plant Removal Permit?
The Director approves removals tied to a building, grading, or land use permit, or requested on their own; the Fire Chief approves removals sought to reduce fire hazard, per § 88.01.050(a).
Are any tree removals exempt from the permit?
Yes: removals on government land, by public utilities, for bona fide agriculture, fire hazard reduction programs, or genuine emergencies threatening safety or structures, per § 88.01.030.

Sources & Official References

Other rules in San Bernardino County

All San Bernardino County rules

California rules heatmap·Compare San Bernardino County to another location·View the California landscaping rules overview

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Tree Removal & Heritage Trees in Cities Across San Bernardino County