Garage conversion rules in Swampscott, MA — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Converting a garage into living space in Essex County towns requires a building permit for the framing, insulation, egress, and wiring. If the new space becomes an accessory dwelling unit, state law now allows it by right.
Turning a garage into a habitable room or apartment is a change of use that needs a building permit; inspectors check egress windows, insulation, smoke and carbon-monoxide alarms, and heating. When the conversion creates a self-contained unit, the 2024 Affordable Homes Act lets one ADU proceed by right in a single-family district without a special permit, subject only to setbacks and site plan review.
Converting a garage without a permit means uninspected egress and alarms, and the town can order the work opened up or reversed. Renting an unpermitted unit exposes the owner to fines and orders to vacate.
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