The way to fix housing affordability is to bring immigration back to l0ng-term average of around 70, 000 per year ( and make sure they are in the main self-sufficient people of like culture to us and therefore most able to fit it ).
Then end the scam that permits any foreigner on a student visa to buy property here.
Then place enormous taxes on foreigners seeking to buy into our property market and where feasible close that route altogether.
When Scott Morrison and others proclaim not to see the link between immigration and the dreadful state of housing ( in ) affordability for our own people he is being completely disingenuous ie he is lying and we all know it.