Within Riverside city limits, endangered tree species cannot lawfully be cut or damaged. Native oaks receive heightened review. On larger parcels in Riverside County (over one-half acre, above 5,000 ft elevation), County Ordinance No. 559 prohibits removing any living native tree without a County permit, and the County's Oak Tree Management Guidelines apply.
Riverside Municipal Code Chapter 13.25 prohibits cutting, destroying, or damaging endangered tree species and protected specimens located in the public right-of-way. Native oak trees, including coast live oak (Quercus agrifolia), Engelmann oak (Quercus engelmannii), and scrub oak (Quercus berberidifolia), receive specific protection through the Riverside County Planning Department's Oak Tree Management Guidelines, which apply on unincorporated and large-parcel land within the city's planning sphere. Encroachment into the protected zone (typically the dripline + 5 ft) of an oak requires an Oak Tree Conservation Easement and special approvals from the Planning Department. For parcels above one-half acre located above 5,000 ft elevation in unincorporated Riverside County, Ordinance No. 559 §12.24.010 makes it unlawful to remove ANY living native tree without first obtaining a permit. The application must include a map of trees, removal counts, reasons, and intended future use.
Removing or damaging an endangered or protected oak without authorization can trigger replacement requirements (minimum 5-gallon same-species tree planted within 6 months under Ord. 559), assessed value restitution to the City, and infraction or misdemeanor penalties under the Municipal Code's general penalty provisions. Conservation easement violations are separately enforceable through the Planning Department.
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