33 N. LaSalle

Engineering Studies and Renovation Design

Engineering Studies and Renovation Design - Chicago, IL


Built in 1928, 33 N. LaSalle encompasses about 500,000 square feet (402,000 square feet rentable) in downtown Chicago. It was originally a bank building and is being redeveloped for commercial tenants by The John Buck Company. GBA provided engineering analysis and MEP systems design.


This 38-story Art Deco tower, once home to the Foreman State National Bank and later the American National Bank, is being redeveloped for commercial office space, incorporating a number of the bank’s details as amenities. GBA has been involved in studies and improvements at the property, which has been rebranded as The Thirty Thr33.

  • Engineering analysis to revise the HVAC distribution system on some floors has been provided. Some duct risers are being eliminated.
  • GBA has worked with architecture firms to design tenant improvements for several office suites. Partners have included MRSA Architects and Partners by Design. 
  • GBA provided MEP design for redevelopment of the building’s lower level, the original public banking floor. This level was converted to a health club, tenant lounge, and other amenities. The existing bank vault was used for new meeting space.
  • Extensive field investigation and pre-testing of existing equipment has been key to succesful execution of the projects at 33 N. LaSalle. Ongoing work is anticipated.