Why is Zestimate Broken?Zillow recently changed the way ZEstimate works for my area (New Castle County, DE including zip codes: 19711, 19805, 19707, 19808, 19807 and quite a few others) Anyway, it used to be based on the price homes recently sold for and it was pretty darned accurate. Now, however, its been switched to show the tax assessment price as stated on the New Castle County Parcel Search page. The problem is, these tax valuations are so far out of wack it isn't funny. A 500K home shows up as being worth 80K. Its just stupid and it messed up not only the Zestimate value but also the graphs that track real estate value in the area. PLEASE fix this.. with out it, Zillow.com is virtually useless to me.July 16 2010 - Wilmington11YesReport 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.