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Santa Clara County, CA Tree Protection: Heritage & Protected Trees (2026)

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

Key Facts

Designation
HHC recommendation + Board of Supervisors resolution
Removal application lead time
At least 90 days before removal
Neighbor notice
Public hearing, 300-foot radius
Penalty
$10,000 to $200,000 per tree

Summary

A tree recommended by the Historical Heritage Commission and confirmed by the Board of Supervisors as historically or aesthetically significant is designated a heritage tree, triggering the county's strictest removal protections.

City-specific rules exist: Sunnyvale, Santa Clara, Mountain View, and San Jose have their own heritage & protected trees rules that differ from Santa Clara County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

Any tree which, because of its history, girth, height, species, or other unique quality, has been recommended by the Historical Heritage Commission (HHC) and found by the Board of Supervisors to have a special significance to the community shall be designated a heritage tree. Such trees shall be listed individually on the heritage resource inventory, adopted by resolution of the Board of Supervisors. Such resolution may be amended as necessary to add or delete trees from the inventory.

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 65).

Full Breakdown

Under Division C16, any person, the Board of Supervisors, or the Historical Heritage Commission (HHC) may nominate a tree for the heritage resource inventory; the HHC holds a public hearing and recommends listing, and the Board of Supervisors makes the final designation by resolution. Once listed, removing a heritage tree requires a permit application at least 90 days ahead, HHC review with a site visit and possible arborist opinion, a public hearing noticed to neighbors within 300 feet, and a final Board of Supervisors decision: the Planning Office issues the permit only after the Board acts, and that decision is final.

Violations & Fines

Cutting, killing, or adversely pruning a heritage tree without approval carries a civil penalty of $10,000 to $200,000 per tree, plus a matching criminal penalty, scaled to the tree's rarity, age, and historical significance.

Frequently Asked Questions

Who decides if a tree becomes a heritage tree?
The Historical Heritage Commission recommends candidates after a public hearing, but only the Board of Supervisors can add a tree to the heritage resource inventory by resolution.
Can a homeowner appeal a heritage tree designation?
The Board of Supervisors' decision on the HHC's recommendation is made by resolution after its own hearing, and that determination is final under Section C16-13.

Sources & Official References

Other rules in Santa Clara County

All Santa Clara County rules

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Heritage & Protected Trees in Cities Across Santa Clara County