Barnes & Thornburg is leveling up its Philadelphia footprint at Three Logan Square, locking in more space high above Center City as it pulls scattered teams into one polished Logan Square hub.
Lease Details And Representation
According to Bisnow, the firm signed a roughly 22,200-square-foot lease on the 41st floor last quarter and added an 8,300-square-foot expansion on the 37th floor of the tower. Savills Philadelphia research manager Daniela Stundel provided the data, while Savills senior managing director Perry Kaplan represented Barnes & Thornburg in the deal. Brandywine Realty Trust, which owns Three Logan, bought out a previously marketed Comcast sublease so the law firm could lease the space directly.
How The Expansion Fits The Firm's Growth
Barnes & Thornburg first set up shop at Three Logan Square in 2023 with a four-year, 7,200-square-foot lease on the 49th floor, according to a company release at the time. In that announcement, the office managing partner said the space would help the firm plan for expansion as the Philadelphia office grew quickly. The planned 2026 uptick in square footage is the next step in that growth push, turning what started as a foothold into a more substantial Center City base.
Market Context: Owners Converting Subleases
The deal arrives as regional sublease inventory has been shrinking, with Savills' market data showing available sublease space at about 4.7 million square feet last quarter, down roughly 1 million square feet from the prior year, according to the reporting. That same quarter saw New York Life relocate into roughly 40,000 square feet at Three Logan, as reported by the Philadelphia Business Journal, and WSFS Bank renew roughly 80,000 square feet at 1818 Market, according to WSFS Financial Corporation. Together, those deals point to steady demand for high-quality Center City space, even as older or less-updated buildings fight harder for tenants.
What It Means For Logan Square
For Brandywine, converting a marketed Comcast sublease into a direct lease with Barnes & Thornburg chips away at shadow inventory and keeps a trophy tower filled with creditworthy tenants. For office users, consolidated, move-in-ready floors in a Logan Square high-rise make it easier to recruit talent and host clients in Center City without juggling multiple small suites. Brandywine's property listing for Three Logan Square lays out available suites and floorplates and underscores the landlord's strategy to re-market and reconfigure space in the building as more tenants trade up into Class A space.
