Home prices in 20 U.S. cities dropped in March to the lowest level since 2003, showing housing remains mired in a slump almost two years into the economic recovery.

The S&P/Case-Shiller index of property values in 20 cities fell 3.6 percent from March 2010, the biggest year-over-year decline since November 2009, the group said today in New York. At 138.16, the gauge was the weakest since March 2003.

A backlog of foreclosures poised to reach the market means prices may stay depressed, dissuading builders from taking on new-home construction projects. Unemployment at 9 percent and stricter lending conditions are signs that any recovery in housing may take years.  Read more