How can a home jump from 1,530 sq ft to 2,200 without adding an addition to the house?A seller is advertising a home at 2,200 sq ft, but all past listings and records show that property as being just 1,530 sq ft. No additions have been added to the home. What could cause such a change without additional building? Finishing an attic or basement, perhaps? Thanks for your help.September 19 2009 - North Tonawanda00YesReport 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.