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Chelsea planning staff brief board on ADU rights, West Chelsea overlay and resilience work
Summary
Planning staff told the Zoning Board that state law requires accessory dwelling units (ADUs) to be allowed by right (size limited to half the primary unit or 900 sq ft), and previewed an early‑stage West Chelsea mixed‑use district, a historic preservation plan funded by the Massachusetts Historical Commission, and green zoning/resilience work.
At the Jan. 13 Zoning Board of Appeals meeting, Chelsea planning staff updated the board and audience about several ongoing zoning and policy initiatives, including implementation of a new state directive on accessory dwelling units (ADUs), early work on a West Chelsea Mixed Use overlay, a historic preservation plan funded by a state grant, and a green zoning/resilience effort to address flooding and stormwater.
John (Planning Department) summarized the state requirement for ADUs: they must be allowed by right provided they are no larger than half the size of the principal unit or 900 square feet, whichever is smaller. The planning department is drafting a zoning amendment to reflect the state law; the amendment will go to the planning board in February and then to the council for adoption. Staff also noted that ADUs within a half‑mile of transit may not require additional parking and that ADUs are not counted toward zoning density limits.
On West Chelsea, staff described an early‑stage planning effort to encourage mixed use on underutilized parcels (including the Market Basket site and adjacent parcels). The work aims to draft dimensional regulations and permitted uses for a Mixed Use overlay district and will include public hearings as the drafting progresses.
Staff also announced a historic preservation plan, supported by a Massachusetts Historical Commission grant, intended to inventory resources, guide priorities and examine how preservation and adaptive reuse can relate to housing and economic development. Finally, staff outlined a green zoning/resilience effort to strengthen floodplain and stormwater regulations and create resilient design guidance; the work will produce drafts of ordinance language and guidelines for possible council consideration in the fall.
Planning staff said community engagement will be a major component of the preservation and West Chelsea efforts and that a consultant is expected to begin work on the preservation plan in March.
Board members asked clarifying questions about ADU size limits, parking exemptions, and how the new overlay and resilience projects might be sequenced.
