I don't think just building more housing is sufficient. That might decrease the cost of living somewhat, but probably not enough to remove the need for a second income.
I think ideally most families should be able to survive on the income of one parent, regardless of which parent that is. But I'm not sure how to get there, although I think the problem is closely tied to wealth inequality.
I also think in a better world, it would be practical for both parents to work, but work fewer hours, each working 20 hours a week. But in the US at least that generally isn't practical because most such jobs don't provide health insurance or retirement plans, and are typically very low paying jobs.
>I don't think just building more housing is sufficient. That might decrease the cost of living somewhat, but probably not enough to remove the need for a second income.
While shadowy special interest groups and large corporations are able to write text directly into the laws of anglophone countries, The People can't even talk about one instance without fragmenting into a trillion pieces covering topics such as the affordability of housing.