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Planning Commission forwards ADU ordinance overhaul to City Council, removes mandatory ADU parking and clarifies discretionary review
Summary
The Planning Commission on Dec. 9 recommended City Council adopt comprehensive ADU ordinance updates to conform with HCD guidance and state law, eliminate mandatory off-street ADU parking citywide, and retain a limited discretionary-review path for atypical cases; commissioners also requested appeals remain to Planning Commission.
The San Mateo Planning Commission voted Dec. 9 to forward a comprehensive update to the city's accessory dwelling unit (ADU) ordinance to the City Council, incorporating California Department of Housing and Community Development (HCD) comments and local clarifications.
Associate planner Liz Gagliardi told the commission the draft contains two categories of changes: (1) amendments required to meet HCD and state law, and (2) additional objective, locally determined standards intended to improve usability. Key HCD-driven changes include a new ADU definitions section (including a multifamily-dwelling-structure definition aligned with state law), clearer rules for separate sale of ADUs by qualified nonprofit developers (Gov. Code citation noted), fee clarifications (no impact fee for ADUs under 750 sq ft; larger units pay…
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