Home prices falling more slowly in most markets

Atlanta, Las Vegas, Phoenix hit new lows

Home prices were down from a year ago in 18 of 20 markets tracked through September by the Standard & Poor’s/Case-Shiller 20-City Composite index, although the annual rate of change improved in most of those markets.

Detroit and Washington, D.C., were the only markets posting annual growth, with prices in Detroit up 3.7 percent from a year ago. Meanwhile, Atlanta, Las Vegas and Phoenix hit new lows.