$ per square foot calculator for DuPage CoIs there a calculator to figure out an acurate residential price per square foot for my county and/or town?The Zestimate for my home is at least off by $100K. Other homes in my neighborhood are valued at $313K, mine is at $422 - 435.ThanksFebruary 19 2011 - Woodridge11YesReport 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.