89 South Street



Role: Lead Development Project Manager  (LMP)

Location: Somerville, MA, USA

Status: 2024-ongoing

Developer: Leggat McCall Properties/DLJ

Type: Commercial lab & office building

Size: 370,000 sf / 35,000 m2

Sustainability: LEED Platinum

Located at the gateway of Somerville’s Boynton Yards innovation district, 89 South Street represents the next step in the neighborhood’s transformation from an industrial landscape into a vibrant hub for life sciences, research, and creative industry. The building is designed with flexible lab and office space, robust infrastructure, and ground-floor amenities that foster collaboration and community.


The architecture emphasizes transparency and connection, with an articulated glass ‘zipper’ that cuts across the façade creating a new podium reference level on the South side that connects to an amenity space on a higher level on the North side. High-performance glazing and active ground-level streetscapes engage the public realm. Sustainability and wellness are embedded into the design, with features that target LEED and WELL certifications.

Part of the larger Boynton Yards master plan, 89 South Street reinforces the district’s identity as a place where innovation, culture, and community intersect, supporting both cutting-edge companies and the surrounding neighborhood.

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