Earlier quoted context omitted.
Compare the median house in 1950 with one today.
It’s not hard to do. A lot of them are for sale today and will sell over asking, no contingencies.
But it's pretty clear that over time the homes were remodeled, gut remodeled, extended, garages added, and so on, so they are significantly improved over the original. I've been in a couple, and the hallways are pretty narrow and everything is very cheaply built.
If you want to see what they were like originally, see the old Bob Hope movie "Bachelor in Paradise", filmed at a just-built suburban community.