What?!
The primary resource needed to build a home is land. Do we have infinite availability of land in desirable areas to build on?
Enough that it's effectively infinite, yes. Especially if we are imagining a world where subways cost 1/20th of what they do today.
In a world where it’s dramatically cheaper to build infrastructure like roads, power, and plumbing, lots more land becomes desirable as a place to live.
Take Phoenix, for example, once air conditioning became cheap and pervasive.