In a major reveal, SL Green Realty has announced its plans to redevelop and expand their existing 13-story office building at One Madison Avenue. From architects Kohn Pedersen Fox, new designs include 18 new floors of Class-A office space, tenant amenities, and more than an acre of outdoor terraces.
The existing 13-story structure will first be reduced to nine floors to serve as a podium for the 18 new floors above. Designed as a glass tower, the new structure will offer 60-foot column-free spans and 14-foot ceilings on each level. Private terraces will be positioned on the podium roof, at the 10th and 11th floors, and at the pinnacle of the new tower.
At the ground floor and podium levels, scope of renovation includes revitalizing lobby and entry areas, expanded retail space, a new auditorium and events space, and unspecified below-grade areas.
According to a news release announcing the project, SL Green opted to assemble the same design and development team behind One Vanderbilt, their 1,401-foot tower on the rise in Midtown East. In addition to KPF, that team includes real estate investment group Hines and Gensler.
“SL Green has been a visionary developer to work with at One Vanderbilt, so naturally we jumped at the chance to collaborate on the redesign of One Madison,” said Doug Hocking, AIA, Design Principal, Kohn Pedersen Fox. “Naturally we jumped at the chance to collaborate on the redesign of One Madison — a dramatic transformation that will infuse a timeless New York City property with a dynamic, inspiring workplace for the 21st century.”
Construction is expected to begin between 2020 and 2021 following the expiration of existing tenant leases.