Blackstone Considering 400K-sf Expansion of 1.1M Office Space

New York-based private equity firm Blackstone is considering an expansion of its current 1.1 million-square-foot offices. Currently a tenant at 345 Park Avenue for more than 30-years, as part of the potential office expansion to 1.5 million square feet, Blackstone has opened the search to sites across Manhattan, including the option to redevelop a building, or simply expand in place.