Kristian Larsen. Arman Dzidzovic/The New York Observer

Mark Scotto recommends breaking up houses into condos so some siblings can stay. (Photo: Arman Dzidzovic/The New York Observer)

Mark Scotto recommends breaking up houses into condos so some siblings can stay. (Photo: Arman Dzidzovic/The New York Observer)

Kristian Larsen. Arman Dzidzovic/The New York Observer