New Construction

ADUs & In-Law HomesRoom for Family. Value for the Property.

Independent living space on your lot for family, guests or long-term rental where permitted.

We check what the lot can support, then build the unit from the ground up.

  • Early site & septic capacity review
  • Permits & inspections coordinated
  • Sitework, build & finish by one team
Our work

ADUs & In-Law Homes by Green Island

Photographs of Green Island's own work.

A new barn-style building with gray clapboard siding, white carriage doors and a row of windows above
Barn-Style Building — A new barn-style building with carriage doors and clapboard siding.
Open kitchen and living area with shaker cabinets, stainless appliances and a slider to the yard
Kitchen & Living Area — Open kitchen and living space inside the new building.
Living area with a large slider, a side door and oak stairs to the upper floor
Living Area & Stairs — Bright living space with a slider and stairs to the upper floor.
A new bathroom with a black-framed glass shower, marble-top vanity and round mirror
New Bathroom — Black-framed shower, marble-top vanity and round mirror.
An upstairs bedroom with a bank of three double-hung windows and mirrored closet doors
Upstairs Bedroom — A bank of double-hung windows and mirrored closet doors.
A bright upstairs room with vaulted ceiling, ceiling fan, mini-split and four double-hung windows
Bright Upstairs Room — Vaulted ceiling, ceiling fan and four double-hung windows.
Oak stair treads with white risers and a wood handrail rising to a window
Oak Staircase — Oak treads, white risers and a wood handrail.
An upstairs landing with a half wall, vaulted ceiling and a double-hung window
Upstairs Landing — Half wall, vaulted ceiling and a double-hung window.
A finished storage space under the roof slope with plank flooring and a window
Finished Storage Nook — Finished storage under the roof slope.
A bright vaulted studio apartment with a loft above, a ladder and a kitchenette
Vaulted Studio Apartment — An open, light-filled studio under a vaulted ceiling.
A vaulted studio with a sleeping loft, library ladder, kitchenette and stainless fridge
Studio with Sleeping Loft — Vaulted studio with a loft, library ladder and kitchenette.

What we do

An accessory dwelling unit or in-law home adds independent living space on your property — for family, guests or long-term rental where permitted. We help you understand what the lot can support and build the unit from the ground up.

Why Green Island: Because we handle sitework, septic and construction, your ADU is planned as one project — not handed between separate contractors.

What's included

  • Early review of the site, septic capacity and access
  • Foundation and utility connections
  • Framing, exterior envelope and roofing
  • Kitchen, bath and interior finishes sized for the space
  • Coordination of permits and inspections
  • Landscaping and walkways to tie the unit into the property

How we approach the work

  1. Conversation and site visit — we learn the property, the goals and the constraints.
  2. Clear scope — what is included, what still needs to be decided and what information we need.
  3. Scheduled, coordinated work — one team managing the phases in the right order.
  4. Walk-through and follow-up — we finish what we start and stand behind it.
Related projects

More New Construction work

The Green Island crew with company trucks in front of a framed new home

New Home Under Construction

Our crew and trucks on site at a new home going up.

View all projects
Client review

What clients say about Green Island

"Experience was great, would hire them again for any other project that I may have in the future. Price was fair, and great communication with us through the entire project."

C
Client
Martha's Vineyard, MA
Service area

Serving Cape Cod, Martha's Vineyard, Nantucket & the South Shore of Massachusetts

Proudly based in Edgartown, Massachusetts.

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