Zillow analysis California sees sharp decline
S&P/Case-Shiller 20-city index slides to 2003 levels in January
Realtor.com reports US home listings drop 21% from year ago
Realtor.com stats show listings down 17.6% in July from year ago
Pace of sales off 12.6%, near 2010 low
RealtyTrac stats show slowdown in foreclosure starts
Unmet demand could spark 'hockey stick' recovery
Median home price posts 8th consecutive monthly gain
Listings count down in 22 of 26 ZipRealty markets
Double-digit annual declines in 19 markets
Sales pace rises 20% year-over-year in June
Low appraisals add to lending woes for builders, developers