SL Green Reveals Major Addition Atop One Madison Avenue, Designed by Kohn Pedersen Fox

Rendering of One Madison Avenue Expansion

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.

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5 Comments on "SL Green Reveals Major Addition Atop One Madison Avenue, Designed by Kohn Pedersen Fox"

  1. Make it Taller!!!

  2. It’s a shame it encroaches upon the elegant old 1909 Metlife tower. Even in it’s renovated condition, it deserves a better neighbor than a bland black box.

  3. The Metropolitan Life Tower deserves better than this appalling addition / remodeling. Completed in 1909 to the plans of Napolean LeBrun & Sons, the 50-story (700 feet) building was once the tallest building anywhere. The twelve-story office block was altered in the early 1960s, an awful decision, and now further damage is scheduled to be undertaken. The office tower should be restored to its original glory. The lower block should likewise be restored to its 1909 appearance. More generic office space need not be included here; what a true landmark this could be. The tower’s four clocks won’t be easily visible and neither will “The Light That Never Fails.”

  4. Please pardon me for using your space: They are famous for new supertall project so I trust in design and decorate inside and outside.

  5. I’m surprised that this building isn’t landmarked.

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