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The 9-story building at 24 East 21st Street between Broadway and Park Avenue South is being converted to 8 residential condominium apartments.

The beige-brick building, which is called Infinity Flats, has a two-story rusticated limestone base and its third floor has limestone quoins and arched windows. The top two floors have rustication.

The building has an attractive broken pediment arched entrance with a carved head between the pediments.

The apartments have about 4,000 square feet of space and the pre-war building has a central atrium of glass, brushed aluminum and galvanized steel.

The apartments will have fireplaces "fashioned in limestone, stainless steel and back painted glass," white-oak plank floors, and beamed ceilings.

Kitchens will have Statuario marble, Italian-frosted glass and aluminum cabinetry and Viking, Sub-Zero and Bosch appliances.

Master baths are clad in Calacatta Gold marble with limestone floors and deep tubs and sinks by WET.

Prices start at $4 million.

Karl Fischer is the architect for the conversion and Andr?Escobar & Associ?is the designer.

The site is convenient to Gramercy Park and the Flatiron District and good public transportation.

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Architecture Critic Carter Horsley Since 1997, Carter B. Horsley has been the editorial director of CityRealty. He began his journalistic career at The New York Times in 1961 where he spent 26 years as a reporter specializing in real estate & architectural news. In 1987, he became the architecture critic and real estate editor of The New York Post.