My home zestimate dropped 75k after i purchased the home. what is the reason for this decrease?The home had a zestimate of 680k before purchase , I purchased for 595k which is 100k below market value. But why would zillow decrease the zestimate of my home in relation to other homes in the same area?July 27 2010 - Palatine00YesReport 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.