Price Crash???? Nahh, not gonna happen.
Corrections in the market? Sure, but we will see the most sought after properties in the most sought after areas retain their value, like they always do.
Some of the monstrous extravagances of the last decade or so may lose a little, but the real engine running along nicely will be the first home market, and there will be no downturn in prices at the bottom end, just demand outstripping supply, as usual.

I am thinking about developing a block at the moment, and tossing up whether to do 2 mid range houses, or five entry level units, and the building costs will be the ultimate determinant.