Zillow Announces Zestimate ImprovementsStarting this evening, we have expanded and improved our database of nearly all homes in the U.S., adding more data on more homes and improving the accuracy of our proprietary Zestimate® home valuations.Read more about this exciting change in our Zestimate Improvements FAQ.We understand that there may be many questions about specific Zestimates. As our Zestimate algorithm is proprietary we will be unable to answer with specificity why your Zestimate is what it is, or why it may have changed with these improvements. Again, we invite you to read our FAQs on the topic to get a better understanding of what Zestimates are all about:Zestimate Improvements FAQWhat is a Zestimate?We will also be updating our Zestimate Values and Accuracy data.Update: We now have two blog posts on the recent changes...Zillow Expands and Improves Database of HomesUpgrading the ZestimateThanks for using Zillow!RussZillow Customer Support and Community RelationsJune 13 2011 - US55YesReport a ProblemProblemSelect oneOffensive contentIrrelevant contentSpam (pure self-promotion)OtherDetailsYour emailPlease enter a valid email address.Submit CancelContent flaggedWe will review this content. Thanks for helping make the site more useful to everyone. To learn more, read Zillow's Good Neighbor Policy.We're sorry. This service is temporarily unavailable. Please come back later and try again.