Urbanism works except we need to address a century of pent up demand and every time someone says "well you're just building for the rich" but the whole point is that it's to scarce so obviously only the rich can afford the first nice homes to be built in a century!

But yeah, houses are cheap. Very nice log cabin style ones (manufactured parts, assembled on site) can be sub 100k. In a scarcity house prices rise to match the debt available. Incidentally, if you like a project look for houses no bank will lend on.