Welcome to the online home of CM•GC Building Corp., a New Hampshire general contractor serving the commercial, industrial, and institutional needs of clients in New Hampshire, Massachusetts, Maine, and Vermont. Our clients include many of the region's hospitals and health care facilities, schools, data centers, and small, medium, and large businesses. Our company is small by design; we are able to leverage our relationships with our partners to scale to your company's needs, yet we are able to provide personal attention to all of our customers and their projects. Please contact us for more information.