This is not the right calculation. Housing units per household makes more sense, as the number of people per housing unit has been shrinking since we started collecting data as peoples preferences change. From what I can tell it peaked in 2011 at 1.17 and has declined to 1.12 since, and considering that we expect some vacancy from moving, condemned units, and people prefer certain areas and dont like many others, the trend does not support that we have enough housing. Not to mention the prices clearly show demand is there