425 Park Avenue

425 Park Avenue is the first full-block office development on Park Avenue in nearly 50 years. The 47-story, 667,000 SF building underwent a gut renovation and modernization/redesign project, combining eight floors from the original building with a large vertical expansion. The Class A office space earned a WELL Core Gold Certification for its full suite of environmentally friendly features, including abundant natural light, enhanced indoor air quality and water purification, and energy-efficient mechanical and ventilation systems. Langan provided full geotechnical services for the subsurface investigation, reuse of foundations determinations, and support of excavation design, and handled permitting with the New York City Department of Buildings, MTA Metro North, and MTA New York City Transit Authority.
2023 CTBUH Best Tall Building Americas
2023 CTBUH Best Tall Building 200-299 Meters
2017 Architectural Review, MIPIM Future Project Award