Double dip is on the doorstep

S&P/Case-Shiller 20-city index slides into negative territory

A double dip in home prices is almost here, with home values down from a year ago in 16 out of 20 metro areas tracked by a Standard & Poor’s/Case-Shiller Home Price Index.

The S&P/Case-Shiller 20-City Composite Index — which showed annual home-price appreciation of 4.6 percent in May — re-entered negative territory in October, registering a 0.8 percent annual price decline.