Why is the sq. footage of our house missing 520 sq. ft.?5230 102nd Street SW, Mukilteo, WA 98275The house is a tri-level. The top two levels total 1680 finished sq ft. The lower floor, at ground level, is an aadditional 520 finished sq ft.March 10 2011 - Mukilteo00YesReport 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.