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Every project is a journey. We'll be your guides.

Architecture, design, construction, and solar—seamlessly integrated, thoughtfully implemented, with lasting impact. We listen carefully, think ahead, and stay with you from first spark to final details.

We'll help you reveal possibilities, make confident decisions, and ensure the process feels as good as the outcome. You set the direction and we'll get you there—beautifully.

Values & Voice

For 50 years, we’ve been designing and building the world we want to live in—shaped by lasting relationships, shared prosperity, deep environmental care and long-term thinking.


We believe businesses have an obligation to positively impact the world around them. Our focus starts at home on Martha’s Vineyard and ripples out to people and places far beyond.  Our values don’t sit on a shelf. They shape every decision we make, on every project, every day.

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Team photograph of South Mountain Companuy on the North Shore of Martha's Vineyard.

Have a project in mind?

We serve individuals, families, and organizations of all kinds. Every collaboration starts with a conversation.
We're ready when you are
A family of four sitting on their South Mountain Company house's front steps.