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General Contracting

Our General Contracting team provides complete construction services for all aspects of a building project. The experienced team at DAS works in tandem and collaboratively with the project owner and architect to transform the design into reality.


At every stage of your project, one of the principals of DAS will be directly involved. This degree of participation and steadfast commitment to a client has always been a defining characteristic of DAS.


Construction Management

Our Construction Management team provides complete administrative management and coordination of a project throughout its life-cycle. During design and pre-construction, the DAS team provides value-added services such as budgeting, value engineering, constructability reviews, scheduling and phasing.


DAS will coordinate the work of trade contractors, and will carry out the project management functions required to successfully complete the project.

Holyoke 4

Owner's Project Management

As an advocate for the owner, DAS provides planning, programming and administration to suit a client’s immediate and long term needs. Our team becomes an extension of the client’s staff, providing administrative support and construction expertise in alignment with the client’s budget and strategic objectives.


All of our Clerks are also Superintendents, with years of experience in constructing and managing projects, which separates DAS from other OPM's.


“In my 30+ years at CBA, and leading back to our firm’s founding in 1955, we have worked with DAS in numerous capacities for construction projects, including DAS taking the role of General Contractors (private projects and MGL ch149); CM at Risk (MGL ch149a); as well as DAS acting as Owners Project Managers (OPM).  We have found them to be fair & honorable in every situation.

Construction is an inherently complex process, especially in the public sector.  DAS’s understanding of the technical aspects of construction, and the need for all parties to work together to make construction projects successful, is further strengthened by their personal attention and collaborative attitudes. No ‘smoke & mirrors’ or ‘salesmen who you’ll never see again’ with this firm. They are real people and we look forward to working with DAS at every opportunity.”

Curtis Edgin

Caolo & Bieniek Associates

“The Arts Trust is a volunteer, non-profit organization, and while we have knowledgeable folks on our board, none of us had any experience with a project of this scale. DAS was outstanding in leading us through this early phase of the project, and continues to be so as we continue the renovations... None of us can imagine having gotten as far as we have without their counsel, work and steady hand.

​I really can't say enough good things about DAS -- members of the Arts Trust relied heavily on DAS during this contract and continue to do so as we build out more of Hawley Street. I am sure we are not an easy outfit to work with, but DAS has proven flexible, supportive, and patient throughout.” 

Richard Wagner

       Northampton Community Arts Trust

“Working with DAS is enjoyable and a refreshing change. All of your staff I have interacted with are polite, professional, respectful and knowledgeable… They do what they say and at the time they say they will. As an owner, they have my support and I try to take care of anything they might need from me to keep the project moving. They respect university space and our employees, and they genuinely want to do a good job and take pride in their work."

  Stephen Lobik
University of Massachusetts Capital Project Manager

“The project went even better than I expected, with conscientious, friendly, well-beyond competent communication and workmanship. It could have been a stressful project, but D.A. Sullivan made the six months fly by… The end result is a stunning library that kept its historic nature, and has been receiving kudos from all who enter it. It’s gorgeous!”

Laurie Wheeler

Pratt Memorial Library Director


Recipients of the 2021 AGC of America
National Safety Awards
Preservation MA - Pratt.jpg
TinyPulse Wins - Construction & Faciliti
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