Flatiron District


One Madison Avenue’s Tower Expansion Tops Out in Flatiron District, Manhattan

Construction has topped out on One Madison Avenue, a 27-story commercial building in the Flatiron District. Designed by Kohn Pedersen Fox and developed by SL Green, the National Pension Service of Korea, and Hines, the project involves the gut renovation and expansion of a former eight-story structure and will yield 1.4 million square feet of office space as well as retail space and a slate of amenities. Banker Steel provided the steelwork,  NYC  Constructors is assembling the new expansion, and AECOM Tishman is the construction manager for the property, which occupies a full block at the southeast corner of Madison Square Park.

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One Madison Avenue’s Tower Expansion Begins Steel Assembly in Flatiron District, Manhattan

Construction is rising on One Madison Avenue, a 27-story commercial expansion in the Flatiron District. Designed by Kohn Pedersen Fox and developed by SL Green, the National Pension Service of Korea, and Hines, the project involves the gut renovation and expansion of a former eight-story structure and will yield 1.4 million square feet of office space. AECOM Tishman is the general contractor for the property, which occupies a full block bound by East 23rd and 24th Streets and Madison Avenue and Park Avenue South.

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

One Madison Avenue’s Concrete Core Begins Ascent in Flatiron District, Manhattan

Construction is set to begin on the new floors at One Madison Avenue, a 27-story office tower expansion in Manhattan’s Flatiron District. Designed by Kohn Pedersen Fox for SL Green, the project involves the gut renovation of the 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 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.

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YIMBY Scopes Views From Flatiron House at 39 West 23rd Street in Flatiron District, Manhattan

YIMBY went on a tour of Flatiron House, a two-tower residential development at 39 West 23rd Street in the Flatiron District. Designed by COOKFOX Architects for NYC-based real estate development firm Anbau Enterprises, the structure will yield 44 condominium units with sales and marketing led by Corcoran Sunshine Marketing Group. The taller portion of Flatiron House is called the Tower and features 37 one- to four-bedroom homes with an entrance on West 23rd Street, while the shorter annex is dubbed the Loft and comes with seven one- to five-bedroom residences and its own entrance to the north on 24th Street. Ryder Construction is the general contractor for the property, which is located between Fifth and Sixth Avenues.

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