There certainly have been communities which have approached things as communal objectives, where people put in their resources and labour without expectation of direct material reward. However, that's really not representative of the majority of the modern world, is it? Particularly in the context of the housing supply.This just isn't true. I guarantee there are things you would not sell for anything, that should be enough evidence for you that not everything can be bought, and then you just need to recognize that you're not the single human in a see of robots to understand your whole view is nonsense.
If we meant something like childcare, that is something where people tend to do a substantial quantity of labour for effectively nothing, albeit generally only within their own family. And even then, whilst their labour may be free, they tend to buy a lot of stuff to make that childcare go well.