Slide 1 of 5, Behind the Build: The Flatiron Building. From landmark offices to 36 private residences. 175 Fifth Avenue, Manhattan. The wedge-shaped tower at dusk with One World Trade Center behind.
Slide 2 of 5, 124 years. A new chapter. Designed by Daniel Burnham. Completed in 1902. Opened to residents for the first time in 2026. Nearly seven years under scaffolding. The facade in scaffolding and netting.
Slide 3 of 5, Preserving the original. More than 1,000 windows replaced, thousands of terracotta pieces restored or recast, and a 6-foot cornice restored. Exterior work carried out in coordination with the Landmarks Preservation Commission.
Slide 4 of 5, 82% in contract. 18 of 22 publicly listed homes, as of August 2026. 36 residences, an approximate listing range of $11 million to $58.5 million, and great rooms of more than 70 feet. An open-plan great room and kitchen.
Slide 5 of 5, The people who know how to do this are worth knowing. Developers: Brodsky Organization and Sorgente Group. Construction Manager: AECOM Tishman. Executive Architect: SLCE Architects. Interior Design: Studio Sofield. Preservation Consultant: Beyer Blinder Belle. Lighting Design: L'Observatoire International.
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Development
The Flatiron Building
Scale
36 residences across 22 storeys
Location
175 Fifth Avenue, Flatiron District, Manhattan

Designed by Daniel Burnham and completed in 1902, the Flatiron was built as the headquarters of the George A. Fuller Company, a pioneering American general contractor. It is one of New York's oldest surviving skyscrapers and was designated a city landmark in 1966. For more than a century it was an office building, most famously home to Macmillan Publishers for nearly 60 years until 2019.

After nearly seven years under scaffolding, the building has opened to residents for the first time in its 124 year history, converted from offices into 36 condominiums.

The exterior work alone was a major project: more than 1,000 windows replaced, thousands of terracotta pieces restored or recast, and the six foot cornice restored, all carried out in coordination with the Landmarks Preservation Commission.

Inside, Studio Sofield turned a gutted, wedge shaped office building into homes with one apartment facing north and one facing south on most floors, and great rooms of more than 70 feet. Homes were listed from about $11 million to $58.5 million, and by August, 18 of the 22 publicly listed homes were under contract.

The Team Behind the Build

DevelopersThe Brodsky Organization, Sorgente Group
Construction ManagerAECOM Tishman
Executive ArchitectSLCE Architects
Interior DesignStudio Sofield
Preservation ConsultantBeyer Blinder Belle
Lighting DesignL'Observatoire International

For Those Who Build

Converting a landmark means every new duct, riser and elevator has to fit inside a building that cannot visibly change. The people who know how to do that are worth knowing.

If you were part of this project, we would like to hear how it was done.

Sources

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