Converting one car garage to twoI've been looking at some homes that have a one car detached garage, but I would really like a two car garage. Does anyone have an idea how much it would cost to convert a one car garage to a two car garage? Thanks.February 10 2008 - US11YesReport 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.