My grandparents had my mom at 17 in 1965, were disowned by their parents, and bought a house at 19 on a single carpenter's apprentice salary. They bought a new car a couple years later.

My grandmother only started working part-time ~1980 as things started getting harder to afford on a single salary.

I think about this a lot because even with two people working full time we couldn't afford a house (in the same city) until we were in our late 20s, without a child. Still have never owned a new car.