Stockton protects three native oak species — Valley Oak (Quercus lobata), Coast Live Oak (Quercus agrifolia), and Interior Live Oak (Quercus wislizenii) — as Heritage Trees on both public and private property. A Heritage Tree Permit from the Community Development Director is required to remove or effectively remove a heritage tree, except in emergencies.
Stockton Municipal Code Chapter 16.130 (Heritage Tree Permit), together with SMC 16.72.245 (Heritage trees), designates Valley Oak (Quercus lobata), Coast Live Oak (Quercus agrifolia), and Interior Live Oak (Quercus wislizenii) as protected heritage trees within the City limits. The chapter applies regardless of whether the tree is on public or private property and regardless of trunk diameter. Removal or effective removal (including root cutting, grade changes, paving over the root zone, or excessive pruning that causes decline) requires a permit. The Community Development Director is the Review Authority; decisions are appealable to the City Council. Property owners may trim, prune, and maintain a heritage tree without a permit, but may not remove it. Applications must include a tree assessment, typically by an ISA-certified arborist, identifying species, diameter at breast height (DBH), health, and justification for removal. Mitigation is mandatory: each heritage tree removed must be replaced on a 3-for-1 basis at the discretion of the Director, with replacement size determined by the size of the tree removed but at least 15-gallon container stock. Replacements are planted on the same parcel when feasible; otherwise in a City park or other Director-approved location.
Removal of a heritage oak without a permit is a violation of SMC 16.130 enforceable as a misdemeanor or infraction under SMC Title 1. Standard California infraction penalties (Gov. Code §36900) are $100 first / $200 second / $500 third within a 12-month period, plus mandatory replacement (3:1 ratio) and potential restitution for the appraised value of the lost tree. The City may also issue stop-work orders and withhold building permits on the affected parcel.
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