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Prudential Douglas Elliman Real Estate

Klarr dissed One57 building, another new residential highrise, telling The New York Times: "‘They cannot go outside on the terrace and see the city of New York the way I do.'"

Photos: Inside NYC's $100-million penthouse

As the New York real estate market continues to break records with trophy properties, Steven Klar, the president of Long Island real estate developer The Klar Organization, is trying to take advantage of it. Klar has listed his 8,000-square-foot penthouse condominium for $100 million in the CitySpire building on West 56th Street, according to The New York Times. It is currently the most expensive home for sale in New York City.