900 Fifth Avenue - Upper East Side
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900 Fifth Avenue is a 19 story cooperative built in 1960 and designed by Sylvan and Robert Bien for developer William R. Buxbaum. Located at the northeast corner of Fifth Avenue and 71st Street, the white brick building is distinguished by two columns of seven-part bay windows that provide expansive Central Park views. The building contains 50 apartments and sits directly across from The Frick Collection, offering unobstructed southern views over the museum's gardens and grounds.
The building replaced historic residences, including one erected in 1926 by Mrs. Florence Adele Vanderbilt Twombly, a granddaughter of Cornelius Vanderbilt. Originally marketed as "New York's Foremost Cooperative," the building was designed with setbacks from the property line and expressive bay windows that were considered unusual for the pared-down architectural expectations of the era. The lobby was later redesigned by AD100 Designer Juan Montoya in exotic woods, lacquer, and polished stone.
Apartments typically feature large living rooms, formal dining rooms, windowed kitchens, and many units showcase the building's signature bay windows with Central Park views, high ceilings, hardwood floors, and extensive closet space. Some apartments include private terraces, and the penthouse features wrap terraces with panoramic park and city views and was originally designed by Maison Jansen.
Amenities include a 24 hour doorman, concierge, live-in superintendent, top floor fitness center, two furnished roof terraces, garage, bike room, and private storage. Monthly maintenance covers all utilities, and the building welcomes small pets under 25 pounds and allows pieds-à-terre. The cooperative permits financing up to 50% with a 2% flip tax paid by the purchaser.
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For some co-ops, instead of price per square foot, we use an estimate of the number of rooms for each sold apartment to chart price changes over time. This is because many co-op listings do not include square footage information, and this makes it challenging to calculate accurate square-foot averages.
By displaying the price per estimated room count, we are able to provide a more reliable and consistent metric for comparing sales in the building. While we hope that this gives you a clearer sense of price trends in the building, all data should be independently verified. All data provided are only estimates and should not be used to make any purchase or sale decision.
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