How much appraisal value is added with a detached 2 car garage with shop space?We bought a foreclosure in 2007, and have done extensive work to it - we refinanced in 2009 and found that the house appraised for exactly what it had when we bought...we are now building a detached 2 car garage with shop space (which will still leave a substantial backyard) and are trying to figure out the added appraisal value of this construction. The garage is for our use, so we're not really concerned about making our money back on it, especially since we're not planning on moving anytime soon. However, we are curious if it will earn enough equity to jump over the 80/20 PMI split.July 21 2010 - Brighton00YesReport 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.