When I bring up my address, Z-estimate has it listed as a two unit. It is a single family 2 story.I also researched houses that recently sold and the property values per the county assessment and my home is assessed higher than all of the houses, per county valuation. Those same homes listed as comparibles list higher through z-estimate and my home list at a much lower value through z-estimate. Is this because z-estimate has my house listed as a two unit? How do I correct the two unit issue?June 22 2009 - US00YesReport 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.