What a silly American way of thinking. Build a lot of homes at once creates high rise neighborhoods. We've had these in Europe since the 60's, they are great. Asia has taken it to the extreme in recent decades.
A couple high rises give you a few hundred residential units in a completely walkable neighborhood.
Here's an example from Ljubljana, built between 1977 and 1987. Houses 18,000+ people on 150 acres. https://sl.wikipedia.org/wiki/Nove_Fu%C5%BEine
Here's a more sciency source. Over 3000 residential high rises were been built in Europe in the 2010's
https://www.alexandrinepress.co.uk/built-environment/high-ri...
Another fun example: The tallest skyscraper in Europe will have 260 apartments and 107,000+ sqft of communal space https://www.domusweb.it/en/news/gallery/2025/09/26/benidorm-...