Willis Tower Transformation Project

Chicago, Illinois

Approximately 460,000 square feet of existing space within the Tower will be reconfigured.

Clayco, in a partnership and joint venture with Turner Construction Company, will oversee the reimagining and transformation of Chicago’s iconic Willis Tower.

As part of the transformation, approximately 460,000 square feet of existing space within the Tower will be reconfigured. This includes 150,000 square feet of space for exclusive tenant use, including a full-service fitness center, expansive tenant lounges, private event space and concierge services to create an inspiring and energetic work environment. The plan also calls for more than 300,000 square feet of new retail, dining and entertainment space, called the Catalog, to be added to the base of the building. The Catalog will fill up five stories of the redevelopment and will be topped by a new 30,000-square-foot outdoor deck and garden space.

In addition, the project will also set out to enhance the building’s 103rd floor Skydeck Chicago experience, which currently welcomes 1.7 million national and international visitors annually.

The Tower’s transformation will also include a new three-story, transparent, glass structure set atop the existing plaza, with three subterranean floors centered around a winter garden with a dramatic skylight.

Involved in the project is San Francisco-based design firm Gensler, Project Architect; and Gonzalez Architects, tenant-only office amenities designer.

Get In touch


Executive Vice President & Shareholder,
Corporate Business Unit Leader, Chicago

+1 312-239-1293

Innovation Highlights

Greater Chicago Food Depository Commercial Real Estate Awards: Redevelopment of the Year Award in the Office / Retail

Key Facts

Project size:  460,000 SF
Client name:  Blackstone & Equity Office
Project Architect:  Gensler
Tenant Space Architect:  Gonzalez Architects