I am completely baffled as to how you come up with your estimates.We have a larger house on a larger lot built the same time as neighboring homes, and have a higher assessment. Yet Zillow has us significantly lower on the estimate. Where do you get your numbers?March 10 2011 - Ashburn00YesReport 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.