" In 2015, the average number of people in a household is 2.58, compared to 4.54 in 1910. This means that today the average individual living in a newly built home in the US enjoys 211% more living space than their grandparents did, 957 square feet in total." Buddy of mine just bought a house with an unfinished basement that you could probably use as an indoor running track. One of the walls is probably close to 120 feet long. I've never seen anything like it.