Modular Homes & SIPsCustom Without Compromise.
Precision-built components combined with on-site craftsmanship.
Colin built his first modular home on Martha's Vineyard in the 1990s, and we have been refining the process ever since.
- Site, septic & foundation prepared
- Set, weather-tightening & close-in
- On-site finish, decks & porches
Modular Homes & SIPs by Green Island
Photographs of Green Island's own work, plus illustrative images where marked.


What we do
Modular homes and structural insulated panel (SIP) homes combine precision-built components with on-site craftsmanship. Colin built his first modular home on Martha's Vineyard in the 1990s, and we have been refining the process ever since.
Modular Homes
Precision-Built. Energy-Conscious. Efficiently Delivered.
SIP Homes
Built Tighter · Built Stronger · Built for Efficiency
Why Green Island: Decades of modular experience on the islands — we handle the site, the set and the finish so the house is truly custom.
What's included
- Modular: factory-built modules set on a foundation we prepare
- SIPs: insulated structural panels for walls and roofs
- Site preparation, septic, foundation and utilities
- Set coordination, weather-tightening and close-in
- On-site finish work, decks and porches
- Landscaping to complete the property
How we approach the work
- Conversation and site visit — we learn the property, the goals and the constraints.
- Clear scope — what is included, what still needs to be decided and what information we need.
- Scheduled, coordinated work — one team managing the phases in the right order.
- Walk-through and follow-up — we finish what we start and stand behind it.
More New Construction work

New Home Under Construction
Our crew and trucks on site at a new home going up.

Barn-Style Building
A new barn-style building with carriage doors and clapboard siding.

Kitchen & Living Area
Open kitchen and living space inside the new building.
What clients say about Green Island
"Thanks again for being so easy to work with. You are the dream construction person I didn't think existed. Happy spring."
Related services
New ConstructionServing Cape Cod, Martha's Vineyard, Nantucket & the South Shore of Massachusetts
Proudly based in Edgartown, Massachusetts.
Discuss Your Modular or SIP Home
Prompt Follow-Up. Clear Scope. Transparent Next Steps.
Complex projects may require site plans, engineering, septic information and design selections before responsible pricing can be established.