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.

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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.

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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.

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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.

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Customer Testimonials

Isaac Blair recently provided shoring on the façade of a private property undergoing renovation in South Boston. The shoring allowed for the replacement of a basement wall to allow for the construction of a new street entrance into the…Read more >

Mark deShong, Architect

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 .62, a direct reflection of the multi-faceted Safety Program in place at all Marr companies. 

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