Kohn Pedersen Fox

Rendering of One Madison Avenue Expansion. Designed by Kohn Pedersen Fox

One Madison Avenue’s Vertical Expansion Set to Begin in Flatiron District, Manhattan

A construction crane is now in position and ready for vertical progress on One Madison Avenue, a 27-story office tower expansion in Manhattan’s Flatiron District. Designed by Kohn Pedersen Fox and developed by SL Green, the project involves the gut renovation of an existing eight-story building and structural addition above its roof level, bringing the structure up to 1.4 million square feet of Class A office space. The National Pension Service of Korea and Hines are also part of the development team and recently acquired $1.25 billion in construction financing for the property, which occupies a full block bound by East 23rd and 24th Streets and Madison Avenue and Park Avenue South. The project team is aiming for both WELL and LEED Gold certification.


Rendering of One Madison Avenue Expansion. Designed by Kohn Pedersen Fox

IBM Confirmed as Anchor Tenant for One Madison Avenue in Flatiron District, Manhattan

IBM will consolidate its New York City offices and relocate to One Madison Avenue, a commercial office tower renovation and expansion currently underway in the Flatiron District. Designed by Kohn Pedersen Fox and developed by SL Green Realty Corp, the project involves the construction of a 530,000-square-foot addition atop the original eight-story building, for a total of 1.4 million square feet of Class A office space.

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Rendering of 520 Fifth Avenue and the Midtown skyline

Rabina Closes on $540M Financing Package for 520 Fifth Avenue Supertall in Midtown, Manhattan

New York development firm Rabina has closed on a $540 million construction package to complete a new supertall tower at 520 Fifth Avenue. Designed by Kohn Pedersen Fox, the structure will top out at 1,000 feet and contain a collection of condominiums and associated amenity spaces, boutique office space, a ground-floor retail component, and public recreation space.

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Excavation Underway for Kohn Pedersen Fox’s 520 Fifth Avenue Supertall in Midtown, Manhattan

Excavation is progressing at 520 Fifth Avenue, site of a 76-story mixed-use supertall skyscraper in Midtown, Manhattan. Designed by Kohn Pedersen Fox for Rabina Properties, which took over as the lead developer in 2019 from Ceruzzi Properties and SMI USA, the 995-foot-tall, 507,608-square-foot structure will yield 98 residential units, commercial space, and four cellar levels. Suffolk Construction is the general contractor for the project, which is located on a 10,625-square-foot lot at the corner of Fifth Avenue and West 43rd Street.

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Rendering of 660 Fifth Avenue

660 Fifth Avenue’s New Glass Façade Continues Installation in Midtown, Manhattan

Work is continuing on the renovation of 660 Fifth Avenue, a 64-year-old, 39-story commercial building in Midtown, Manhattan. Designed by Kohn Pedersen Fox and developed by Brookfield Properties, the project involves an interior overhaul and a complete re-cladding, replacing the old aluminum envelope with a modern glass curtain wall. The 1.25 million-square-foot property is located along Fifth Avenue between West 52nd and 53rd Streets and was formerly addressed as 666 Fifth Avenue.

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