Square footage, How is this computedI see here on on zillow my house has a listed sq footage of just over 900 sq ft and my eestimate on this is over 1700 is there a reason why the differenece. It is a 2 story with a finished basement.March 24 2010 - New Prague00YesReport 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.