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Planning board continues ADU site-plan review for 9 Pantheon Road to Jan. 22
Summary
The planning board opened a public hearing on a proposed one-bedroom ADU at 9 Pantheon Road (proposed 838 sq ft interior on a 70,000-sq-ft lot). The board asked for confirmation of gross-floor-area methodology, Title 5 and Board of Health sign-offs, and continued the hearing to Jan. 22 for conditions and final review.
The Lakeville Planning Board opened a public hearing at 7 p.m. on Jan. 8 to consider a site-plan review application for an accessory dwelling unit (ADU) at 9 Pantheon Road. The application, presented by Jamie Bissonette of Zena Consulting Engineers, proposes an 838-square-foot one-bedroom ADU on a 70,000-square-foot lot with a new septic tank, a shared well connection and a separate driveway.
Bissonette told the board the ADU drawing uses gross floor area measured inside wall to inside wall, consistent with the ADU regulation cited. "The ADU regulation actually reads that the gross floor area is from inside wall to inside wall," Bissonette said. Board members noted state law limits ADUs to 900 square feet and asked staff to confirm that interior measurements yield the 838-square-foot figure on the architect's plan.
Members also identified outstanding technical items: a Title 5 inspection and Board of Health sign-off on the septic addition before a building permit can issue, verification of driveway width and a recent survey of the property (plans dated 11/19/2025 were cited). A member of the public asked whether ADUs are by-right and whether they can be rented; board members explained ADUs arise from state guidance in the 2024 Affordable Homes Act and are subject to local site-plan review; local rules may still restrict short-term rentals.
After discussion the board voted to continue the site-plan review to the Jan. 22 planning-board meeting to finalize standard conditions and allow staff and the applicant to resolve technical items.
What happens next: Staff will coordinate with the applicant’s engineer and Board of Health to confirm square-foot methodology and Title 5 compliance ahead of the Jan. 22 continuation.
