Norwalk commissioners debate ADU rewrite: setbacks, sizes and owner‑occupancy on the table

Planning staff opened a broad discussion of proposed zoning regulation changes that would affect accessory dwelling units (ADUs), public‑realm obligations and several definitions.

Staff framed ADU options around three main levers: where a detached ADU may be sited relative to the front wall of the primary dwelling, how large an ADU may be (staff proposed keeping a 700 sq ft cap with an option up to 1,000 sq ft subject to review), and whether an owner‑occupancy requirement should be retained to limit investor‑led conversions. Staff also suggested creating a menu of approaches — e.g., allow smaller ADUs as of right and require larger or atypical units to go to site plan or special permit review.

Commissioners split on the tradeoffs: some favored making ADUs easier and more by‑right to encourage small‑scale housing; others worried about building another full residence on a lot without neighbor notice. Concerns included whether a detached ADU plus a two‑car garage could create what effectively looks like two single‑family homes on one lot and whether investor purchase of single‑family properties could lead to de‑facto multi‑unit rentals. Commissioners discussed owner‑occupancy language and edge cases (for example, if the owner dies or moves, what happens to the ADU). One commissioner said requiring notice to neighbors as part of a zoning permit might be feasible but would need legal review.

Staff asked for direction and offered to return with a draft menu of options, suggested public outreach (a short survey plus a public hearing) and possible preapproved ADU plans to streamline approvals. Planning director Steve proposed a public contest to generate pre‑approved ADU designs that could be offered to homeowners to speed permitting.

Next steps: staff will draft options that reflect the commission’s feedback, confirm legal constraints on owner‑occupancy and notice with corporation counsel, and plan an outreach campaign to gather public input before a formal public hearing on proposed code changes.