Housing     The largest part of any city is taken up by housing. Traditionally, the bulk of housing in New York and surrounding cities was provided by rowhouses or walk-up tenements. As modernist ideas of housing took hold in the 1930s, and up until the 1970s, a dominant model consisting of tall apartment buildings in open space arose. More recently, the urban and social problems of this model have become clear, and various lower-rise solutions have returned. Our urban housing projects have adopted this approach, seeking to return a human scale to the city and to repair blight through intervention with understood housing forms.