Elizabeth G.

Many young families start out in two-bedroom apartments, thrilled with their space (rooms for all!). The arrival of a second child is manageable at first (many NYC kids share), but if those sibs include a brother-sister combo, the days of happy co-existence are numbered. Here, how one family of four—including an 11-year-old daughter and an 8-year-old son—solved their own room-splitting conundrum.