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Turner is a North America-based, international construction services company and is a leading builder in diverse market segments.

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Our people bring their technical knowledge, experience, and resourcefulness to the delivery of our construction services. Our expertise and value-added offerings support our clients throughout the lifespan of the construction process.

As the largest general contractor in the country, Turner is a leader in all major market segments, including healthcare, education, commercial, sports, aviation, pharmaceutical, retail and green building.

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Four Seasons Modernization

Four Seasons Modernization

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Turner Construction Company

66 Hudson Boulevard East

New York, NY 10001

(212) 229-6000

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(888) 738-1924

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Project overview

Business Unit(s)


Year Completed



Liberty Mutual

Client Industry


Scope of Work

Interiors, New Construction, Repositioning


855,000 sq. ft., 24-Stories


CBT Architects


Risk Management
Virtual Design & Construction

Liberty Mutual Headquarters, 157 Berkeley Street

Iconic Expansion and Renovation in Downtown Boston

The Liberty Mutual Home Office Expansion Project was designed by the Boston architectural firm of CBT. The new 24-story, 855,000 sq. ft. commercial office building includes 574,800 sq. ft. of office space, an employee cafeteria that spans the ground level and second floor, an urban park, and four levels of below-grade parking.

In addition to the new building, the existing 130,000 sq. ft., ten-story historic Salada Tea Building (330 Stuart St) was substantially gutted and structurally connected to the new tower at each level. The project also included a new two-story, 27,000 sq. ft. conference center constructed across the street from the main office tower project and connected to it with a new all-glass luminescent pedestrian bridge.

Turner also completed a fitout of the office tower that included 600,000 sq. ft of Class A office space on 21 floors in the new building at 157 Berkeley Street in Boston. The project received LEED Gold certification.