Rolfe Winkler argues that debt is the real problem, not housing prices:

If I may offer just one reason this will all fail: rising interest rates. Interest rates need only revert to their historical median in order to hammer asset values, and balance sheets, into oblivion.

A simple present value calculation suggests that house prices could fall another 30% if mortgage rates get back to 8%.** Enough to wipe out a 20% downpayment made today and still leave the buyer upside down on his mortgage. Given the pile of Treasurys the Obama administration plans to dump on the market, it seems logical to assume interest rates are headed up.

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