San Ramon, CA Tree Protection: Protected Tree Species (2026)

Chapter II of the Zoning Ordinance's Division D5 protects specific tree species and size classes citywide, in every zoning district, under Section D5-7's stated purpose of preserving native oak trees, oak woodland habitat values, trees of historic or cultural significance, groves and stands of mature native trees, and mature trees and native habitat generally. A defines six categories of protected tree: a native oak with a trunk diameter of six inches or more measured 54 inches above grade; a heritage or landmark tree or grove identified by City Council Resolution; a significant grove or stand identified by City Council Resolution; any tree specifically required to be planted, relocated or preserved as a condition of a Tree Removal Permit or other discretionary permit, or as environmental mitigation; any tree six inches or more in diameter located within 100 feet of a perennial stream or 50 feet of a seasonal stream; and any other mature tree eight inches or more in diameter not otherwise exempt.

C then narrows that universe: a willow, fruit tree, eucalyptus, alder, cottonwood, pine, redwood, or similar ornamental tree as determined by the Director is never a protected tree in any zone, and an existing non-oak tree covered only by the eighth-inch category is exempt on single-family lots in the RC, HR, RE, RS, RM, and PD zones that cannot be further subdivided. Nursery stock, commercial orchard trees, dead or hazardous trees confirmed by the Director or an approved arborist, and emergency removals for traffic sightlines or utility protection are exempt regardless of species. B.