Our History

Founded in 1940, TG Gallagher takes pride in our longstanding relationships with our clients, many of which span several generations. As a result of our quality craftsmanship and dedication to customer service, we have worked with a wide range of institutional clients for multiple decades, including Harvard University, Liberty Mutual, Massachusetts General Hospital, Dana Farber Cancer Institute, Simmons College, and Wellesley College.

We are honored to work alongside construction and design colleagues whose partnership we value greatly, on many prominent projects that continue to shape the region. With the transition to more collaborative design and construction − including integrated project delivery (IPD), design-build, design-assist, co-location, building information modeling (BIM), and other 3D and 4D design tools − our industry partners and clients rely on TG Gallagher’s culture of continual improvement, which has guided the way we work from the very beginning.