Manhattan, NY Columbia Property Trust, Inc. has secured a full-floor lease expansion with Harvey at 315 Park Ave. South, its 20-story office building located in Midtown South’s Flatiron District.

Harvey is doubling its space to 34,100 s/f. The San Francisco-based generative artificial intelligence firm, which initially leased the 17,050 s/f fifth floor earlier this summer, has added the entire 17,050 s/f seventh floor. Harvey, which is backed by OpenAI, Sequoia Capital, Kleiner Perkins, and Google Ventures, is dedicated to building the future of professional services.

Columbia Property Trust was represented in-house by Maria Blake and Ted Koltis, in addition to a Newmark team of David Falk, Peter Shimkin and Jonathan Fanuzzi. Harvey was represented by JLL’s Todd Stracci, Hugh Scott and Jack Nelson.

“We’re thrilled to be able accommodate Harvey’s expansion needs so soon after establishing their New York office at 315 Park Ave. South,” said Columbia Property Trust’s head of real estate, Ted Koltis. “Harvey’s decision to quickly double its presence is a testament to their continued success as well as to 315 Park Ave. South’s ability to attract cutting-edge firms to a world-class working environment in one of New York City’s most vibrant neighborhoods.”

The 332,000 s/f tower is home to a range of prominent technology and finance firms, including PitchBook and Twitch. Its retail spaces are currently occupied by luxury fitness chain Equinox, the robot-run food purveyor Kernel, and Just Salad.

The century-old building blends classic exterior architecture with modern building systems. Columbia has instituted and maintains a series of technology and operating enhancements that emphasize occupant health, wellness, and safety, earning the tower ENERGY STAR, Fitwel, LEED Gold, and WiredScore Platinum certifications. 315 Park Ave. South also received the Building Owners & Managers Association (BOMA) of New York’s 2022 Pinnacle Award for Operating Building of the Year.

The building provides exceptional transit access and walkability to Madison Square Park, Gramercy Park, and a wealth of upscale food options, hotels, and shopping.