The solution is so simple, our population growth rate is too high relative to housing production, so the quickest, most immediate and obvious solution is to reduce immigration significantly. Within a couple years you will see housing demand fall and with it, prices! This isn't rocket science. And our economy must be able to sustain itself on a steady state population or we have a serious structural problem. You can still have immigration, but it must not be detrimental to the people living here.