The Ontario City Council adopted an urgency ordinance (File No. PDCA24-004) amending Division 5.03 of the city's Development Code to comply with new state regulations for Accessory Dwelling Units (ADUs) and Junior Accessory Dwelling Units (JADUs). The ordinance updates local rules in response to Assembly Bill 2533 and Senate Bill 1211, which impose new limits on how cities can regulate ADUs. Key changes include expanded legalization of unpermitted ADUs, prohibition of replacement parking requirements, and increased allowances for detached ADUs in multifamily properties. Without this amendment, Ontario's existing ADU regulations would become invalid, leaving ADU approvals governed solely by state law.
This ordinance ensures that Ontario maintains local control over ADU regulations while complying with new state mandates. By aligning local zoning with state law, the city preserves its ability to regulate ADU height, setbacks, and design, preventing unregulated ADU development that could impact neighborhood character and property values.