I guess I’m not surprised by the house size thing. I was born in ’61 (yes, I’m old). The first house I lived in was a 4/2 1326 sf house over in Clairemont. It was plenty big for our family of 5. My dad saw a deal on a foreclosure in late 1965 and bought it… it was HUGE and remote by the standards of the time – 2016 sf. (In 1965 you could only get into University City by Regents Rd… Genesee didn’t connect and 805 and 52 were quite a few years off.)
I know that through high school 2000+ sf was considered a large house compared to my peers. Most of my friends/classmates had smaller houses – more like 13-1800sf.