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Weston & Sampson tells Nantucket commission island could add thousands of homes under current rules
Summary
Consultants presented a parcel-level 2025 build‑out analysis showing a wide range of possible housing growth on Nantucket depending on assumptions; commissioners and residents pressed for clarity about sewered areas, bedrooms versus dwelling units and neighborhood impacts such as Madaket.
Consultants from Weston & Sampson told the Nantucket Economic Development Commission on June 23 that, under current zoning and environmental constraints, the island could accommodate thousands of additional dwelling units — with a wide range depending on assumptions about demand and build‑out rules.
The firm presented a parcel‑by‑parcel GIS build‑out update completed in March 2025. “The purpose of this report was to provide technical information … to inform your policy decision‑making and future planning efforts,” said Joanna Nato, senior planner with Weston & Sampson. Dan Sheehan, senior associate project manager, described the firm’s prior work on the 2020 sewer master plan and said this update covers the town’s remaining unassessed parcels.
The report distinguishes maximum theoretical capacity from likely development. Weston & Sampson estimated a very large theoretical maximum if every developable parcel were built to zoning limits: roughly…
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