Gilbane Building Company is a construction and real estate development firm based in the United States. Founded in 1873, it has grown to become one of the largest privately-held construction companies in the country, providing services in construction management, general contracting, and facility management. The company operates across various sectors, including commercial, education, healthcare, and government projects. With a commitment to quality and sustainability, Gilbane emphasizes collaboration and innovation in its projects, ensuring that they meet the needs of clients while adhering to industry standards and best practices.