County 2006 2007 2008 2009 2010 Peak 2010 v. Peak
Alameda $462.5K $460K $320K $250K $248.3K $462.5K -46.3%
Contra Costa $420K $429K $280K $185K $180K $429K -58.0%
Marin $548.8K $570K $402K $317.5K $350K $570K -38.6%
Napa $462K $440K $400K $242K $236.5K $462K -48.8%
Santa Clara $499K $520K $417.5K $300K $328.8K $520K -36.8%
San Francisco $715K $760K $749K $640K $650K $760K -14.5%
San Mateo $535K $550K $450K $393K $375K $550K -31.8%
Solano $300K $294K $125K $75K $78K $300K -74.0%
Sonoma $380K $359.5K $220K $174.5K $175K $380K -53.9%
BAY AREA $490K $508K $375K $275K $290K $508K -42.9%