Marlborough advances ADU local law allowing detached units on single‑family lots with conditions

Supervisor Corcoran opened a public hearing Dec. 8 on a proposed local law amending Chapter 155 (Zoning) to allow detached accessory dwelling units (ADUs) on single‑family properties and opened the floor to public comment. "The detached unit cannot be used for a bed and breakfast or short‑term rentals," Corcoran said, summarizing a key restriction in the draft law.

The reintroduced draft expands eligible parcels to include the R (Residential) zone with less than 1 acre provided there is adequate water and sewer service; properties relying on waste disposal systems would need Board of Health approval, Corcoran said. The board also reviewed recommendations read from an Ulster County Planning Board letter that, among other points, suggested allowing any‑sized lots subject to Department of Health approval and referring complex cases to the town Planning Board.

After public comment and discussion about definitions and community impacts, Corcoran moved to close the hearing at 7:18 p.m.; Councilwoman Sessa seconded and the motion carried 4–0. The board then accepted the Full Environmental Assessment Form Part 2 for the ADU local law, with Corcoran stating the form identified no environmental impacts; that motion (made by Councilwoman Sessa and seconded by Councilman Cauchi) also passed 4–0.

If adopted, the local law would add permitted accessory uses in R and R‑AG‑1 districts and create a new zoning section specifically authorizing detached ADUs on single‑family properties under the stated conditions. The board noted the ability to revisit or refine the law later as needed.