Daniel Marr & Son Company

Daniel Marr & Son Company was established in 1898 and has played a major role in the development of the Boston skyline by providing high quality steel and precast concrete erection services to fabricators and general contractors. The professional standards upheld by the company have proven successful time after time: a cooperative team approach, quality performance, effective and timely resolution to project challenges and commitment to a safe working environment.



Marr Crane & Rigging

Marr Crane & Rigging operates three lines of business: cranes, construction elevators and rigging with an equipment fleet that includes 22-ton to 300-ton cranes. The company employs fully-trained and experienced operators and signal persons. Rigging and installation of all types of equipment is a core service and we offer indoor/outdoor storage in three facilities.



Marr Scaffolding Company

Marr Scaffolding Company provides the rental, sales and servicing of nationally marketed construction products and equipment. Marr Scaffolding operates through five divisions: Scaffold, Shoring, Aerial Lifts, Hydro Mobile Mast Climbers and Bleachers and Special Events. The company also operates a Contractor’s Safety and Supply Center that offers a local, on-the-spot resource for contractor supplies and safety items.



Isaac Blair & Co., Inc.

Isaac Blair & Co., Inc. was established in 1820 and purchased by Daniel Marr & Son in 1969. The company provides specialty construction shoring and rigging services and has developed an unparalleled expertise in solving complex shoring and rigging challenges.


Customer Testimonials

In a letter to CEO Dan Marr III, Bruce Legen, Director of Operations at Fusco Corporation, New Haven, CT, expressed his organization’s satisfaction with the shoring services Isaac Blair provided during the construction of a new school….Read more >

Bruce Legen, Fusco Corporation

Trevor McCourt, Project Manager at McCourt Construction, had this to say about the work performed by Daniel Marr & Son and Marr Scaffolding Company on two projects: “I know I have said it before but I cannot…Read more >

Trevor McCourt, McCourt Construction

Safety @ Marr

The Marr Companies Safety Program is a comprehensive plan that continually evolves to reflect the most current standards and procedures within the industry.

The Safety Program is driven and implemented by top level executive involvement and maintains full-priority status. Marr is committed to the health and welfare of our employees, our customers and the community at large.

Marr's ultimate safety goal is to achieve an accident-free, loss-free environment. The company has an EMR factor of .70, a direct reflection of the multi-faceted Safety Program in place at all Marr companies. 

Boston Area Weather