Plans for Chicago’s historic Post Office building revealed by 601W Companies and Gensler

The redevelopment project is currently the largest in the nation.

September 28, 2017 |
Aerial view of the Post Office redevelopment project with the green roof

Rendering courtesy of ©601w Companies | Gensler

Since 2016, nearly 100,000 man-hours have been invested in the Old Chicago Main Post Office to prep the building and the site for its planned redevelopment. 200 construction workers from 27 construction-related firms have been on site and removed an estimated 20 million pounds of debris. Now, 601W Companies and Gensler have revealed detailed plans for the redevelopment.

The plan is to position the building as “a world-class development for the future of business and commerce,” according to a press release. The redevelopment spans 2.8 million sf across three city blocks and five acres, making it the largest redevelopment project in the country.


Festival hall in the Chicago Post Office redevelopmentFestival Hall. Rendering courtesy of ©601w Companies | Gensler.


Over $600 million is being invested in the building, which will feature a large-scale festival food market that spills outside to a riverfront plaza, 250,000-sf floorplates with ceiling heights of 19 feet for use as office space, and a roof that will include over three acres of park space with cafes, sports courts, and a quarter-mile running trail. The estimated 15,000 tenants will also make use of over 80,000 sf of tenant amenities, including a fitness center, conference space, and lounge and entertainment space.


The fitness center in the Chicago Post Office redevlopmentThe fitness center. Rendering courtesy of ©601w Companies | Gensler.


Many of the original details of the building are being restored or retained as part of the redevelopment. The Post Master’s office, mail chutes and scales, the limestone exterior, and the Historic Lobby on Van Buren will all be carried through to the redesigned building.

“We intend to honor The Post Office’s past, bringing to life a vision that preserves the art deco design and history of the building while making way for progressive elements and updates that will resonate with the workforce of today and tomorrow,” says Brian Whiting, President of The Telos Group, which oversees strategic positioning and leasing of the office space, in a release.


The northeast plaza at the Chicago Post Office redevelopmentThe Northeast Plaza. Rendering courtesy of ©601w Companies | Gensler.


Leasing for the property is currently underway with an anticipated completion date set for early 2019. Future tenants will be able to begin building out space in 2018.


A bocce court and pool table in one of the tenant loungesA bocce court and pool tables on the second floor. Rendering courtesy of ©601w Companies | Gensler.


A library spaceLibrary. Rendering courtesy of ©601w Companies | Gensler.


Harrison Street south lobbyHarrison Street South Lobby. Rendering courtesy of ©601w Companies | Gensler.

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