South Mountain Company

South Mountain Company is a Martha’s Vineyard design-build firm that says it has been operating for 50 years. Its own site describes integrated architecture, interior design, construction, and solar work for homes and community projects on the island. The company’s registry-verified credentials include active Massachusetts HIC 105826 and electrician license 4247, both held by South Mountain Company Inc. Two dated Google reviews from July 2021 describe the team as careful and collaborative. A couple of design professionals working remotely praised the team’s quality, artistry, stewardship of resources, and ability to earn their trust, while another reviewer highlighted collaboration, transparency, respect for surroundings, and exceptional work. Google shows 5 stars from three ratings, but the written review history is small and dated rather than recent. South Mountain is a plausible fit for an island homeowner seeking a single team for solar alongside broader design and construction work. Before booking, confirm the scope of solar versus full design-build services, current availability, and how the active HIC and electrician credentials apply to the proposed project. The company was also identified in 2020 Reddit posts as a US Federation of Worker Cooperatives member appearing before the House Small Business Committee; those posts provide organizational context, not customer-work detail.