how much would it cost to excavate a 400 sq ft area on east side of My house.The upper level is 1400 sq ft, and the lower level aprx 1000 sq ft.2 bedrooms were added by a former owner.I would want it to be set up as an unfinished basement area.December 17 2008 - Eagan00YesReport 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.