Zoning board discusses ADU bylaw follow-up after advisory review; minutes approved

The Town of Southborough Zoning Board of Appeals approved the draft minutes of its March 18 meeting with a minor amendment and spent the remainder of the early agenda time discussing the accessory dwelling unit (ADU) bylaw and related two‑family zoning issues.

Board members said the recent advisory review had raised concerns — notably over a proposed 300‑square‑foot limit and how that number interacts with existing rules — but described substantial public support at town meeting. Members said the advisory committee’s objections focused on the 300‑sq‑ft threshold and potential unintended incentives; the board discussed refining the two‑family definition and whether special‑permit criteria or clearer size calculations would address concerns.

The board agreed staff (Laura) would coordinate next steps for drafting definitions and potential revisions to be discussed at future meetings. No formal bylaw change was voted that night; members noted the matter will return for follow‑up work with legal and planning staff prior to any zoning‑bylaw submittal at town meeting.