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DAS Office

Building History Since 1897

D.A. Sullivan & Sons, Inc. (DAS) is a mid-sized General Contracting, Construction Management, and Owner's Project Management firm based in Northampton, Massachusetts, and built on a reputation of integrity, quality and respect.

DAS offers extensive experience and a record of accomplishment to complete projects on time, within budget, and with the utmost regard for safety and quality -

and we've been doing it for 126 years.

Ferry Street Building #5
"One of the notable strengths of DAS is their ability to effectively manage projects from start to finish. The project management team showcased excellent organizational and leadership skills, ensuring that all tasks were meticulously planned, coordinated, and executed."

Mike Michon, One Industrial Lofts, LLC.

Why DAS?

In everything we do.


In everything we build.

Newman Catholic Center

For everyone, on every level.

Contact us about your next project!

Fill out the form, or call us to discuss your project needs.

Service Areas:

Massachusetts + Connecticut

Hours of Operation:




82-84 North St., Northampton, MA 01060

Phone: 413-584-0310

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