I like this quote from the Chief Economist from Morgan Stanley:
"Traditionally what has hurt people has not been rising (interest) rates but rising unemployment. I don't care what rate you're paying, if you have a mortgage five times your income and you lose your job, you're toast.''
See Daily Telegraph from 2009.
Easy credit followed by high unemployment rates is a good indicator of whether there will be a residential property bust. Look at Spain, with 25% unemployment for example. So at present, Queensland should be safe. But if the mining and construction boom ends....