how do you determine values of houses?4 houses in our development sold for over $700,000. Now their valuehas gone up tos almost $800,000. Our house is in same development on a cul-de-sac on a larger lot and you have its value at less than $640,000 and our value has gone down for the past year. Ours has to be at least $700,000.December 21 2012 - Evergreen00YesReport 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.