Commission moves to align ADU rules with state statute while debating local limits

Bolton Planning Commission · September 17, 2026

Summary

Planning commissioners debated accessory‑dwelling unit rules — removing a 'family' occupancy requirement and whether to match state size limits (900 sq ft / 30%) — and asked staff to check statutory text before the next meeting.

The Planning Commission focused substantial discussion on accessory dwelling unit (ADU) language during its review of draft zoning bylaws, with members saying the town should not be more restrictive than state law and asking staff for precise statutory guidance.

Staff noted the draft removes an occupancy requirement that an ADU be occupied by an owner's family member and proposed replacing family‑based language with 'unit' language. One commissioner said the town shouldn’t impose rules that contradict state law: “It sounds like there's a desire to not be more restrictive than the state,” and asked staff to verify whether the state maximum (commonly cited as 900 square feet or up to 30% of the main dwelling) applies. Staff agreed to check and report back.

Members also raised fairness concerns about using a percentage‑only limit that favors larger homes: “The language favors larger homes,” one member said, arguing size rules should preserve affordability. The commission asked staff to draft ADU text that follows statute while remaining as flexible and accessible as allowed.

What’s next: staff will research the statute referenced in the discussion and return with recommended language at the next meeting.

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