We Specialize in Commercial Building.

We offer design/build and space planning services when the situation warrants it. Design/build is very cost- and time-effective. We work closely with architect/owner/tenant/builder teams to produce a layout that works at a lower cost and can be built in a short period of time.

We have extensive experience in new construction, additions, and renovating space in existing buildings. We perform all aspects of the build-out required, including HVAC, electrical, plumbing, drywall, millwork, and all finishes.

Our success has been based upon our ability to manage complex projects and to align interests with our clients to maximize the value of their facilities.

What our clients say

“In addition to exceptional professionalism, outstanding communication, and the ability to adhere to a difficult project completion timeline; most impressive was that Callahan/Hoffman had a strong prior knowledge base of the unique needs and regulatory requirements that are specific to the early childhood/childcare industry.”

Geri DannYounger University/Owner; Executive Director

“When the building was completed, we could not have been happier nor more proud of the result. It was a community-wide effort, and Garth and his company became our extended community. More importantly than the immediate reaction, I can contentedly report that, this many years later, the building has held its promise… everything works the way that it should.”

Kevin ClarkHead of School, Bay Farm Montessori Academy

“Callahan/Hoffman has been and is our only construction manager for all our additions and internal building changes for more than ten years… Callahan/Hoffman cost estimates have been accurate and their work on time and correct.  Their handling of change orders have been well done.”

George E. KeelerPresident, Tech-Etch

“Callahan/Hoffman has successfully renovated buildings in Mansfield, Waltham and Woburn for me for more than 10 years… They have performed consistently, completing all projects on time, on schedule, and with their usual quality.”

J. Gearson BlochChair of Facilities Committee, Wellspring Multi-Service Center of Hull


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