Mass General Brigham Leases Lab Space in Somerville
The healthcare provider will consolidate its pathology services into a 100,000-square-foot facility at 74 Middlesex Avenue.
Updated on Oct. 27, 2026 in Remote Work

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Mass General Brigham has signed a long-term lease for 100,000 square feet of lab space at 74 Middlesex Avenue in Somerville. The organization plans to consolidate its system-wide pathology laboratory operations into this new facility located in Assembly Square.
Why it matters
The move is designed to modernize and centralize pathology functions to improve overall efficiency and patient care quality. By clustering these essential services in a specialized hub, the health system aims to streamline its operations.
The leased facility is situated within a 15-story building that offers a total of 469,000 square feet of lab and office space. The site holds WELL Core, LEED, and WiredScore Platinum certifications.
The players
Mass General Brigham
An integrated academic medical center based in Massachusetts that manages a large network of hospitals and specialized research institutions.
Greystar
A global real estate company that specializes in the investment, development, and management of residential and commercial properties.
The details
The facility at 74 Middlesex Avenue provides direct transit links to the MBTA Orange Line and I-93, enhancing accessibility for the system. Mass General Brigham retains the right to extend its occupancy and expand its footprint in the building as needs evolve.
Timeline
October 27, 2026: Details of the lease agreement were confirmed.
Market Landscape
This move mirrors the development of Kendall Square as a biotech hub by concentrating institutional medical research within transit-accessible urban corridors. It signals a shift in corporate real estate strategies as health systems seek high-efficiency environments for core operations.
While the move primarily impacts internal laboratory logistics, the consolidation aims to improve the speed and efficiency of patient testing results across the system. Patients may experience improved service coordination as pathology operations are streamlined into a single modern facility.
The takeaway
Large healthcare organizations are increasingly prioritizing high-performance, LEED-certified buildings to house critical service infrastructure. This trend highlights the importance of transit access and modern facility standards in optimizing system-wide medical logistics.
Further reading
For more on evolving workplace strategies, visit the Remote Work section.
Source note: This article includes information reported by Nerej.
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