Photo Courtesy of Millennium Partners

What: Winthrop Center 

Where: 115 Federal St., Boston 

Built: 2020-2023 

Owner: Millennium Partners 

A lease by a Financial District asset manager brings office leasing at the Winthrop Center tower to 158,000 square feet. 

Income Research + Management will relocate from 100 Federal St. to the 691-foot-tall office-condo tower at 115 Federal St., which is scheduled for completion in 2023.  

In February, Boston-based Cambridge Assoc. signed the speculative tower’s first lease at 115,000 square feet. 

Designed by Handel Architects, Winthrop Center is the world’s largest office tower built to Passive House standards and is designed to use 150 percent less energy than the average office building in Boston. 

They Said It: 

“Our move is well-aligned with our core values, which emphasize the importance of our clients, community, and colleagues.  Additionally, our new office will reflect the extent of our sustainability commitment – and be an inviting space for all IR+Mers to gather and collaborate.” 

-Bill O’Malley, CEO and Co-CIO, IR+M