ADU and Accessory Dwelling Units in Ipswich, Massachusetts
ADU and Accessory Dwelling Units in Ipswich, MA
What Ipswich, MA homes are working with
Design and feasibility before anything is committed
How the project runs
What it costs
Frequently Asked Questions
Does Ipswich, MA require owner occupancy for an ADU?
Under the statewide by-right law, owner occupancy of the principal home is generally not required. Local dimensional rules and site plan review can still apply to a specific parcel, which is confirmed as part of the design and permitting process.
Does Ipswich, MA require owner occupancy for an ADU?
Yes. Detached accessory dwelling units are protected under the new state law, not just units added onto or converted within the existing house.
How big can the unit be?
The state formula caps it at one-half of the principal dwelling’s gross floor area or 900 square feet, whichever is smaller. The larger the main house, the more that formula tends to favor the homeowner, up to the 900 square foot ceiling.
Do we need a special permit?
In most cases, no. The February 2025 law made ADUs allowed by right in most single-family districts, which generally means a standard building permit process rather than a discretionary hearing. Site-specific factors can still require review.
Will the in-house millwork shop matter for a small unit?
It matters more, not less, on a small footprint. Built-ins, custom storage, and cabinetry designed for the actual dimensions of the unit make a 900-square-foot space livable in a way that off-the-shelf cabinetry sized for a standard kitchen often can’t.