Young people just starting their careers and perhaps living on their own for the first time generally move into apartments. After a while, they may move to a larger apartment or to a condo that that has more square feet than their apartment. Many couples begin married life in an apartment or condo.
Then life changes. The couple has a baby or plans to have children — they need more space. An apartment dweller wants to own a dog — he needs a yard and sidewalks. Young people who are well on their way to successful careers may be ready to invest in property. These are a few of the reasons that cause people to move from a multifamily dwelling into a single-family home of their own.