(d) shrinking household sizes. Kids don't live with their parents as long, people aren't having kids and there are a lot more single households. sqft/person has

(d) shrinking household sizes. Kids don't live with their parents as long, people aren't having kids and there are a lot more single households. sqft/person has increased significantly. https://www.aei.org/carpe-diem/new-us-homes-today-are-1000-square-feet-larger-than-in-1973-and-living-space-per-person-has-nearly-doubled/ https://www.aei.org/carpe-diem/new-us-homes-today-are-1000-s...