Average price per square foot for New York NY was $1,430, an increase of 2.2% compared to the same period last year. Popular neighborhoods in New York include Upper East Side, Upper West Side, Harlem, Chelsea, Tribeca, and Clinton.verage price per square foot for New York NY was $1,430, an increase of 2.2% compared to the same period last year. Popular neighborhoods in New York include Upper East Side, Upper West Side, Harlem, Chelsea, Tribeca, and Clinton.