Home prices fell in October for the third month in a row and it appears the housing market is headed for a double dip, according to the Standard & Poor's/Case-Shiller house price index.

"The double dip is almost here," said David Blitzer, chairman of S&P's index committee. House prices began a recovery in mid-2009 that lasted into July of this year — thanks to home buyer tax credits that expired during the summer.

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