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This 13-story limestone building at 640 Park Avenue, designed by J.E.R. Carpenter, is one of Park Avenue's most exclusive apartment buildings with only one unit per floor. Built in 1914 and converted to a co-operative in 1946, it features impressive architectural details and has been home to many notable residents. Currently, 1 apartment is for sale.
640 Park Avenue is a 13-story limestone clad building erected in 1914 on the northwest corner of Park Avenue and 66th Street. Designed by J.E.R. Carpenter, the leading luxury apartment architect of his generation, the building was developed by Spencer Fullerton Weaver and converted to a co-op in 1946. With only one apartment per floor across 12 full floor residences, it stands as one of Park Avenue's most exclusive addresses. Carpenter's portfolio includes numerous prestigious Park and Fifth Avenue buildings, and 640 Park represents what Christopher Gray of The New York Times called his "arrival into the stratosphere of luxury apartments."
The building's limestone façade is architecturally distinguished by its narrow but highly detailed cornice, paired arched windows on the 7th and 11th floors, and string courses above multiple floors. A particularly notable feature is the limestone itself, which contains visible fossils including shells, worm burrows, spirals, and animal tracks from the Mississippian period. Gray observed that the façade displays "great wavy bedding patterns" from ancient seas, creating what he called a sedimentary "call of the wild" that any passerby can appreciate. The building also features protruding air conditioners and an impressive side street entrance.
Apartments in the building are exceptionally spacious, with some containing as many as 18 rooms. Common features include cedar closets, multiple wood burning fireplaces with period mantles, Brazilian walnut floors, and 10-foot ceilings. The full floor layouts typically span 65 feet along Park Avenue and include 25-foot-wide galleries, formal dining rooms, libraries, and multiple bedroom suites. The 8th floor unit, sold for $23 million in 2013 by the estate of Sue Erpf Van de Bovenkamp, exemplifies the scale with five bedrooms, five fireplaces, an 18-foot-long pantry, breakfast room, wine closet, and two staff rooms. Many apartments feature private elevator landings, seven-foot-wide hallways, and circular floor plans with four exposures providing abundant natural light and tree lined Park Avenue views.
Notable residents have included George and Herbert Pratt (sons of Standard Oil partner Charles Pratt), Evelyn Annenberg Jaffe Hall, Millard Drexler (CEO of J. Crew), Richard S. Fuld Jr. (former Lehman Brothers CEO who sold for over $25 million in 2009), and Glenn Fuhrman (co-founder of MSD Capital). The white glove building permits 35% financing, allows pied-à-terres, has no summer work rules, and charges a 2.5% flip tax paid by the buyer. Located across from the historic 7th Regiment Armory and surrounded by low rise buildings, the location offers open views, proximity to Central Park, and easy access to Madison Avenue shopping and restaurants.
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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.
Notable past and present residents at 640 Park Avenue
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