ThanksThank you so very much. I now understand the basis for zestimate's calculations.I appreciate your clarification. We have put a lot of effort and money into our home and we think it has been so much enhanced from previous estimates. So I am pleased humans, and not computers, judge our home :) Question refers to 2221 Abbotsford Dr, Vienna, VA 22181April 15 201000YesReport 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.