"As a conclusion of my investigation and analysis, it has been determined there are many properties in San Francisco and the Silicon Valley that area currently overassessed. These properties tend to be price-point and location specific. Most property values in San Francisco and the Silicon Valley have been stable, with some areas actually increasing. The areas that have declined, have done so noticeably (10-30% from the peak periods). Currently, the micro-markets within this metro area are experiencing the most diverse flux of trends ever experienced.
Additionally, the traditional online valuation services are also overvaluing the properties in the areas that experienced declines.
It is my recommendation that all homeowners who purchased between 2004-2006 be aware of the potential for overassessment. Furthermore, the online valution services may not be a reliable source of data for these properties at risk of overassessment"