A house in San Mateo listed in ZipRealty for $629k. The same house in Zillow has been estimated (rather zestimated) to be $772k. That gave the house the following stats
5yr +92.4% and
and since last sold? +12.9% (sale date 08/11/2005). Unless Zillow starts tweaking it’s zestimate algorithm to the changing real-estate reality landscape, the numbers will only fool you. Also, for buyers doing online research, try out multiple sources including ZipRealty, Zillow and Redfin. Depending on where you live in the US, some other website catering to your local market.