Banks began freely lending to Japanese firms and individuals, who purchased real estate, which increased the paper value of land assets. This created a vicious cycle in which land was used as collateral to obtain further loans, which were then used to speculate on the stock market or to purchase more land. This drove up the paper value of land further, while the banks continued to grant loans based on the overvalued land as collateral.
There was little questioning by either the government or the banks themselves over how the loans would be repaid or what would happen once land values started dropping.
http://www.japantimes.co.jp/news/2009/01/06/reference/lesson…
Do you see any similarities with NSW current Real-Estate market?
So what happened after Japanese Bubble ?