We had Gary Shilling on TechTicker yesterday. He's still as bearish as ever:

A year ago, house prices finally stopped collapsing after two years of brutal declines. Over the following few quarters, moreover, they actually rose. This led many observers to conclude that the housing bottom had been reached and that we were headed for a v-shaped bounce.

Not Gary Shilling.

Gary Shilling, head of economic research firm A. Gary Shilling & Co., thinks house prices still have another 10%-20% to fall. Just as bad, Gary thinks this fall will happen over the next three years, meaning that house prices won't bottom until 2013. Most people think prices have already bottomed, or will bottom later this year or next.

Why is Gary so bearish?

Supply versus demand.

Basically, Gary says, we still have way too many houses relative to the number of people who want to buy them. Consumers are under pressure, overloaded with debts and struggling to find work, and the mass-hallucination that investing in housing was a "sure thing" is now a distant memory. These days, many would-be home buyers are moving in with relatives or downsizing or dumping second homes. And the supply-demand balance is so out of whack, in Gary's view, that even super-low interest rates won't keep prices afloat.