"Another real possibility is that lower interest rate will...

"Another real possibility is that lower interest rate will continue to hammer the AUD and foreign speculative investors in the Aussie property market will exit to avoid any further foreign exchange loss."

Or because of the falling AUD foreign speculative investors see more value as their currency buys more dollars in the lucky country. You can spin that one every which way.

I don't disagree that falling commodity prices will have an impact on many things in Australia. But I don't see it as a certain bust for property. I do think Perth is in for some trouble, may not be big trouble but prices boomed way harder than elsewhere in Oz and it is probably due for a lengthy flat period. We'll see...