In response to some of my comments.
I think there are at least two different questions
1) What has been the evolution of home affordability/attainability over the past decade
2) What has been the evolution of home construction over the past decade
A simple narrative might be that easy lending lead to both an increase in the number of homes and the price of homes. Easy lending has gone a way and the number of homes has collapsed to roughly trend.
However, the price of homes is stubbornly high and thus it is more difficult to obtain a house now, leading to lots of vacant homes and multiple families sharing the same home at the very same time that other homes are vacant.
This is a possible example of sticky prices leading to inefficient outcomes in material terms. Homes without families at the same time that there are families without their own home.