401 Congress Street

South Boston Waterfront
Land Sq. Feet
69,696 sq ft
Gross Floor Area
518,500 sq ft
BPDA Contact
Project Description
The Proponent intends to construct a new Class A office & life-science building with significant public uses (the “Project”), located at and around 401 Congress Street in the South Boston Waterfront District of Boston, Massachusetts (the “Project Site”). The Project Site is owned by the Massachusetts Port Authority (“Massport”) and consists of two parcels containing approximately 1.6 acres of land. Parcel A2, which is currently a 1.1. acre surface parking lot; and the Triangle Parcel, which is a 0.48 acre of isolated, undeveloped land. The Project consists of a total of approximately 518,500 gross floor area on Parcel A2. Additionally, the Project proposes approximately 10,000 square feet of outdoor public realm on Parcel A2 and Congress Street, and 40,000 square feet of outdoor public realm on World Trade Center Avenue. An estimated 20,000 square feet of outdoor landscape and 15,000 square feet of outdoor sheltered flexible space will be accommodated on the Triangle Parcel.

Project Phase

  • Letter of Intent
  • Under Review
  • Board Approved
  • Under Construction
  • Construction Complete


South Boston Waterfront Large Project