A 1963 house is what we'd think of today as a starter home. Available medical care was very limited, so you don't need modern health insurance. No braces for the kids. One small car, and it can be a really old beater and still be better than 1963 cars (no seatbelts or catalytic converters back then). One landline phone, no internet, no cell phones, etc.
The "he lived in Daly City" thing is a bit of a red herring. Daly City was not a 15 minute drive from the center of the hottest industry in the world in 1963. So substitute Fresno.
Anyway, if you can find a woman who wants to be a SAHM to your five children in a Fresno starter home, where she clips coupons and cooks meals from scratch with no appliances, you can achieve a 1963 standard of living pretty easily on a schoolteacher's salary.