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Board advances ADU/SB9 and density‑bonus updates; limits SB9 build‑out to state minimums and adds front‑setback rule for larger ADUs
Summary
The board adopted updates to county code to align accessory‑dwelling, SB9 (urban lot split/urban dwellings) and density‑bonus rules with state law, streamlined review timelines, and — after board direction — limited SB9 resulting parcels to two units each (i.e., four units total post‑split) and set a front‑setback requirement for detached ADUs over 800 sq ft.
Long‑range planning staff presented proposed ordinance updates to implement the county’s housing‑element actions: aligning local code with state ADU rules, building consistent SB9 procedures for urban dwellings and lot splits, and updating the county’s density‑bonus program to reflect recent state changes.
Tristan Roach (speaker 34) and Corey Hahn (speaker 46) summarized three priorities: (1) consistency with state law, (2) streamlined permitting (30/60‑day targets), and (3) achieving housing‑element goals. Staff noted ADUs have driven recent low‑ and moderate‑income unit production and proposed allowing configuration flexibility (rather than forcing attached vs detached designations) and reviewing ADU applications under clarified timelines.
On SB9 and combined ADU build‑outs, staff initially presented theoretical maximums but the board expressed concern about unintended over‑densification and infrastructure impacts. Following discussion, staff proposed — and the board approved — limiting SB9 resulting parcels to two dwelling units inclusive of ADUs (producing a maximum of four units across a split), and adding an explicit front‑setback rule that requires detached ADUs larger than 800 square feet to meet the primary unit’s front setback. The changes aim to meet state minimums while providing local guardrails.
The board also directed staff to return with any future refinements, data on likely community impacts and a communication plan; the measures will go to HCD and Coastal Commission for required certification where applicable.
