Livermore regulates trimming of street and heritage trees through the Public Works Department; private-property trees generally don't require permits unless protected.
Street trees in the public right-of-way are maintained by Livermore Public Works, which permits resident pruning only with prior approval and ISA-certified arborist work. Heritage and native oak trees may be protected under Livermore's tree preservation policies requiring a permit for significant pruning (over 25% canopy). Routine trimming of non-protected private trees needs no permit. PG&E performs utility-line clearance. Branches overhanging neighbor property may be trimmed to the property line under CA common law (Booska v. Patel), but the trimmer must avoid harming tree health.
Contact your local code enforcement office for specific penalty information.
See how other cities in Alameda County handle tree trimming.
See how Livermore's tree trimming rules stack up against other locations.
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