Accessory Dwelling Units on Cape Cod
Frame2Finish specializes in ADU permitting, design, and construction.
Professional ADU builders for Cape Cod and Plymouth, MA
Frame2Finish is a licensed general contractor based in Sagamore Beach specializing in accessory dwelling units across Upper Cape Cod and the Plymouth region. We handle every phase of the build from design coordination, permitting, foundation, framing, mechanical, and finish work.
ADU regulations in Massachusetts changed significantly with the 2024 Zoning Act. Single-family homeowners can now build one ADU by right, statewide. If you've been waiting to add a unit, now is the time to build.
Types of ADUs We Build
Detached ADUs
A standalone structure built on the same lot as the primary home. Detached units offer the most flexibility in layout and use — rental income, multigenerational living, or a dedicated home office with separation from the main house.
Attached ADUs
Built as an addition to the existing home, sharing at least one wall with the primary structure. Attached ADUs are often the most cost-effective path when existing roof lines and foundation can be extended.
Garage Conversion ADUs
Detached or attached garages converted into fully conditioned, permitted living space. A practical option for homeowners who have underutilized garage square footage and prefer to avoid disturbing landscaping or septic setbacks.
Interior Conversion ADUs (Basement & Attic)
Converting existing below-grade or upper-level space into a legal dwelling unit. Requires egress compliance, ceiling height evaluation, and often mechanical upgrades — work we assess before any contract is signed.
Above-Garage ADUs
A new living unit built above an existing or newly constructed garage. Popular in neighborhoods with smaller lot sizes or tight setbacks where ground-level footprints are constrained.
Building ADUs across Cape Cod and Plymouth MA
ADU Service Areas
Frame2Finish, located in Sagamore Beach, builds ADUs throughout Upper Cape Cod and the greater Plymouth area. If your property falls within the towns and villages listed below, contact us for a site consultation.
Cape Cod ADU Builder
Bourne MA
Sagamore Beach, Sagamore, Bournedale, Buzzards Bay, Monument Beach, Pocasset, Cataumet, Gray Gables, Cedarville
Sandwich MA
Sandwich Village, East Sandwich, Forestdale, South Sandwich, Spring Hill
Falmouth MA
Falmouth Village, East Falmouth, West Falmouth, North Falmouth, Woods Hole, Teaticket, Hatchville, Waquoit
Mashpee MA
Mashpee, New Seabury, Mashpee Neck
Barnstable MA
Hyannis, Barnstable Village, Centerville, Osterville, Cotuit, Marstons Mills, West Barnstable, Cummaquid
Plymouth County ADU Builder
Plymouth MA
Plymouth Center, Manomet, Cedarville, Ellisville, White Horse Beach, Chiltonville, Pinehills, Vallerville
Duxbury MA
Duxbury Village, Millbrook, Surplus Street area, Crocker Park, Island Creek, Standish Shore
Marshfield MA
Marshfield Hills, Brant Rock, Ocean Bluff, Green Harbor, Humarock, Sea View, South Marshfield
Scituate MA
Scituate Harbor, Humarock (shared with Marshfield), North Scituate, Greenbush, Egypt, Minot, Sand Hills, Rivermoor, Peggotty Beach
Hingham MA
Hingham Center, Crow Point, World's End, Button Island, South Hingham, East Hingham, Wompatuck, Bare Cove
Cohasset MA
Cohasset Village, Jerusalem Road, Beechwood, Sandy Cove, Atlantic Avenue corridor
Norwell MA
Norwell Center, Accord, Norwell Four Corners, Mount Blue
Hanover MA
Hanover Center, Hanover Four Corners, Rockland Street corridor
Kingston MA
Kingston Center, Indian Pond, Jones River Village, Silver Lake area
Pembroke MA
Pembroke Center, North Pembroke, South Pembroke, Bryantville, Elm Street corridor
Why Cape Cod Homeowners Choose Frame2Finish for ADU Construction
Local zoning knowledge matters on Cape Cod. Setback rules, septic Title 5 requirements, and Conservation Commission jurisdiction vary significantly by town, and in many cases, by neighborhood.
Frame2Finish has worked through permitting on both sides of the Bridges and brings that site-specific experience to every project.
We don't subcontract project management. Your project is run by our team from the first site visit through the certificate of occupancy.
Ready to move forward? Request a site consultation and we'll review your lot, your goals, and what's buildable under current zoning before you commit to anything.