“Thompson Center Plaza Rendering” by Google (Jahn renovation), image/information source: Google
Google’s Chicago headquarters primarily refers to its ongoing redevelopment of the James R. Thompson Center (JRTC) in the Loop district, a Helmut Jahn-designed postmodern landmark from 1985.
Architectural Highlights
The JRTC spans 1.2 million square feet across 17 stories, featuring a signature light-filled atrium with a dramatic curved glass facade that maximizes daylight penetration. Google’s $700 million purchase in 2022 kicked off a comprehensive retrofit, partnering with Jahn Associates to preserve the iconic form while upgrading to 21st-century standards—replacing the single-pane skin with triple-glazed panels for 40% better thermal efficiency, plus high-performance HVAC to handle Chicago’s extreme seasons. Covered terraces on three southeast levels add greenspaces, enhancing biophilic elements with natural light and views, while the ground-floor colonnade opens for public retail, cafes, and seasonal events.
Sustainability Features
Efficiency targets include slashing energy use by 50% via passive solar design, smart shading, and rainwater systems—echoing Gherkin Tower’s atria ventilation. The atrium stays central, now with modernized escalators and flexible workspaces for 2,000+ employees, blending public access (lobby hours) with private Google zones like themed lounges and rooftop amenities. Full occupancy is slated for 2026-2027, symbolizing adaptive reuse in urban cores.
Workspace Design
Interiors emphasize human-scale “piazza” concepts with open atria connecting floors visually, full-height windows framing skyline views, and Chicago-themed nodes (e.g., game rooms, full kitchens). A separate West Loop office (converted cold storage, 237,000 SF over 7 floors by VOA Associates) pioneered this vibe pre-JRTC, with punched atriums flooding industrial concrete with light.
