After signing the largest office lease in Chicago in recent years, an engineering design firm is coming back for even more space in a 51-story tower in the Loop business district.
Chicago’s largest office lease since 2021 is still growing
Sargent & Lundy adds three more floors before moving to 51-story tower
By Ryan Ori
CoStar NewsDecember 15, 2025 | 6:12 P.M.
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IN THIS ARTICLE
- Properties
- 77 West Wacker
77 Wacker Dr, Chicago, IL
- Companies
- Sargent & Lundy
Professional, Scientific, and Technical Services