In 2015, Bob Birrell and David McCloskey from the Australian Population Research Institute released an explosive report examining new household and dwelling projections for Sydney and Melbourne for the period 2012 to 2022.
The report found that there would be a continuing scarcity of family-friendly housing in both cities, especially of detached housing, but an epic oversupply of shoe box apartments, particularly in Melbourne, if current construction trends persist.
Basically, younger households wishing to start a family would find it increasingly difficult to secure a detached home with a backyard, since the stock that is available will be taken-up mostly by older empty-nesters at the same time as the number of younger households is increasing via rapid immigration.