SAN ANSELMO, CA - JULY 24:  Real estate agents tour a home for sale July 24, 2008 in San Anselmo, California. According to a report by The National Association of Realtors, sales of existing homes slumped 2.6 percent for the month of June, 15.5 percent lower than last year. Getty Images logo Getty Images 15 months ago

SAN ANSELMO, CA - JULY 24: Real estate agents tour a home for sale July 24, 2008 in San Anselmo, California. According to a report by The National Association of Realtors, sales of existing homes slumped 2.6 percent for the month of June, 15.5 percent lower than last year.