Chicago trial firm Hall Prangle is packing up its longtime Wacker Drive office and heading across the Chicago River to 10 South Riverside Plaza in the West Loop, trading an old standby address for a freshly upgraded riverfront complex. The relocation is the latest sign that law firms and other professional services are gravitating toward newer, modernized spaces along the water.
According to Crain's Chicago Business, Hall Prangle has signed on at 10 S. Riverside Plaza, a two-tower complex that ownership has been working to reposition. Reporter Danny Ecker detailed the deal in a May 11, 2026, story, noting that the move lines up with a steady run of West Loop leases that are skewing toward renovated riverfront towers.
Hall Prangle's own website still lists its Chicago headquarters at 200 South Wacker Drive, Suite 3300, underscoring where the firm is currently operating. Market trackers show the firm has been in roughly 22,000 to 26,000 square feet at that address in recent lease cycles, which makes this a meaningful jump rather than a minor reshuffle. Those leasing figures appear in market data compiled by Transwestern.
Riverside Plaza's pull
Owners Ivanhoé Cambridge and its partners have spent the past several years repositioning 10 and 120 South Riverside Plaza with upgraded lobbies and shared spaces, an expanded riverwalk, and a slate of new tenant amenities aimed at bigger, brand-conscious occupants. That investment has helped the complex land new leases and higher-profile names as landlords race to make existing riverfront buildings competitive with the latest West Loop product. Colliers' leasing analysis points to a string of sizeable West Loop commitments and renewals that have increasingly favored spruced-up riverside space.
What the Move Signals for the Market
For Hall Prangle, crossing the river means access to riverfront floor plates, a more current amenity package, and closer proximity to a concentration of other professional-services tenants. The decision tracks with a broader pattern in which renovated towers in the Riverside cluster continue to win institutional and corporate occupants even as downtown vacancies remain elevated. Transwestern's leasing tables list several recent moves into Riverside-area towers, underscoring the complex's pull with well-capitalized tenants.
Neither the Crain's Chicago Business report nor the firm's public-facing pages have spelled out a specific timetable for the move, and Hall Prangle's contact page has not yet been updated with a relocation date. This story will be updated if the firm or the building's ownership releases additional details.
