Built in 1920 as a Georgian mansion, 51 East 78th Street is now an intimate, elegant, meticulously-maintained co-op with only four units per floor. The lovely tree-lined streets it sits on is in the heart of the Upper East Side, in a prime location moments from Central Park, The Met Museum, The Frick, Society Library and Sant Ambroeus along Madison Avenue, as well as excellent shopping and dining selections, and the 6 train.
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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.