The thing is - the inflating bubble is really good for the economy and makes middle-class homeowners feel better about having no savings. I suspect their back pocket plan is "sell the house, pay off the visa and move to Nepean" or Kingston.
It's all going to crash very soon. There can't be this much actual money in the world to drive these things. Somebody is in debt, and in trouble...
I don't know. With interest rates so low there has to be a lot of money out there looking for a place to be productive.