It is an artifact of the VA mortgage and Levittown. Sears would write you a note on a Crafstman house, but it wasn't for 30 years. Of course you had to own the

It is an artifact of the VA mortgage and Levittown. Sears would write you a note on a Crafstman house, but it wasn't for 30 years. Of course you had to own the land. Look at how Harry Truman lived. My uncles all lived at home until they moved, either for military service or because they got married. Age range roughly 1915 to around 1945 or so. People lived in boarding houses if they didn't have a family. My sister has a "boomerang" Millenial; the house is probably 3-4000 sq feet and the "kids suite" upstairs is probably 1200 sq ft. or so.