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5 Middlesex Ave
Somerville, MA 02145
Assembly Square Office Park · Property For Lease

HIGHLIGHTS

  • Located within Assembly Innovation Park, adjacent to Assembly Row.
  • Surrounded by over 800,000 SF of retail, dining, and lifestyle amenities.
  • Immediate access to MBTA Orange Line and I-93.
  • Dense, affluent population base within 5-mile radius.

PROPERTY OVERVIEW

5 Middlesex Avenue is a 246,508 square foot, four-story office building situated within the Assembly Square Office Park in Somerville, Massachusetts. This property boasts an exceptional location adjacent to Assembly Row, a vibrant, mixed-use development offering over 800,000 square feet of retail, dining, services, and lifestyle amenities. The building benefits from excellent transit accessibility, being just a short walk from the MBTA Orange Line’s Assembly Station, and offers immediate access to I-93, providing direct connectivity to downtown Boston and the greater metro area.

  • Atrium
  • Banking
  • Commuter Rail
  • Fitness Center
  • Food Court
  • Food Service
  • Property Manager on Site
  • Restaurant

PROPERTY FACTS

Building Type
Office
Year Built/Renovated
1980/2014
Building Height
4 Stories
Building Size
246,508 SF
Building Class
B
Typical Floor Size
52,500 SF
Unfinished Ceiling Height
12’
Parking
162 Surface Parking Spaces
Covered Parking
  • Listing ID: 37529214

  • Date on Market: 9/3/2025

  • Last Updated:

  • Address: 5 Middlesex Ave, Somerville, MA 02145

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