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Placentia council approves code changes to align ADU and SB9 rules with state law
Summary
The Placentia City Council on Feb. 17 approved zoning code amendments to update accessory dwelling unit (ADU) rules and SB9-style urban lot split regulations, adding ministerial review time limits, clarifying appeal procedures and historic-resource protections; both measures passed on 5-0 votes and will proceed to second reading as required.
The Placentia City Council on Feb. 17 moved to adopt local amendments designed to bring the citys accessory dwelling unit and SB9/urban-lot-split rules into compliance with recent state legislation.
Joe Lambert, a planning staff member, told the council the package includes ordinance O-2026-01 to amend Chapter 23.73 governing ADUs and junior ADUs and ordinance O-2026-02 addressing two-unit conversions and urban lot splits. Lambert said the changes respond to state bills including SB 543 and AB 462 and are meant "to make sure we are fully compliant and can enforce our own rules here." He told the council the ADU amendments add a time limit for ministerial review (a "shot clock"), clarify appeal procedures and set out when sprinklers are required for JADUs.
The council voted 5-0 to introduce O-2026-01 for first reading and to waive full reading. On the related SB9-style item, Lambert said staff recommended a small redline change to remove a double negative and to clarify that parcels identified as historic resources or within historic districts need not be eligible for urban lot splits. Council members approved the amendment with the staff change by a 5-0 vote; staff said the ordinance will be brought back for second reading.
Why it matters: The changes aim to preserve the citys ability to apply local standards while ensuring Placentia complies with state-mandated timelines and approval rules for ADUs and urban lot splits. The historic-resource clarification gives the city increased discretion on parcels with documented historic value.
What happened next: Both items advanced on unanimous votes; O-2026-02 will return for a second reading with the staff-recommended language, and O-2026-01 was introduced for first reading. No public speakers addressed either item during the hearings.
The councils official actions on both ordinances were recorded as 5-0 approvals to proceed to the next procedural step.
