MIAMI - SEPTEMBER 25: Realtor Gary Hecht, from Coldwell Banker Residential Real Estate, Inc. , waits to show a home he is selling to prospective home buyers September 25, 2007 in the Coconut grove neighborhood of Miami, Florida. According to the S&P/Case-Shiller home price index released today the decline in U.S. home prices accelerated nationwide in July, posting the steepest drop in 16 years.