But houses across the board are much larger than before. I live in a mostly 1950s era neighborhood and the houses are tiny by America standards. Almost all of them are <1,000 sq ft, two bedroom with a one-car driveway and no garage.
A modern house in much of middle America is going to be at least 2,000 sq ft, but 3,500 is certainly common, as the average size currently stands at around 2,800.
As someone in another thread pointed out - this doesn't help because all the houses are bigger (as land price has increased while construction cost has not). You don't have the option to buy a smaller house for less.
[0]: https://www.supermoney.com/inflation-adjusted-home-prices/