How do you value a coop verses condo?I live in SW DC and noticed that your valuations seem odd to me. The zestimates for nearby coops are on par with condos. I can assure you that in DC coops are not desireable. It seems to me that your formula doesn't adequately take into account local values.In addition, in DC a difference of several blocks can make a huge difference in value. For example, in SW there are pockets of crime near the public housing complexes. Your formula seems to ignore that and use sales of those condos as comps for those in nicer/safer blocks. This lowers the value to those nicer/safer condos and houses. I'd recommend not just looking at square feet and also having a consultant familiar with the area improve your formula.December 01 2011 - Southwest Waterfront00YesReport 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.