How bad is this crack in foundation? Should we avoid this home?I am just starting to look at homes to purchase, do not have a realtor, and I don't know all the ins and outs of the home buying process. I just went to an open house and I see a lot of potential in the home and do not mind a fixer, BUT there is a crack in the floor tile that runs through multiple rooms from one end of the house to the other. There is a large multipurpose/LR on the back side of the home that was added on without a permit (seller isn't sure). The home does not have a basement or crawl space, it is a slab on grade. I'm afraid that the addition is causing the soil to settle incorrectly which is causing uplift in the slab on grade, hence the crack. With this said, if we want to know more, how do I go about getting a professional to look at this? When in the process does that happen? Anyone have experience with this sort of situation? Thanks in advance for any help!June 23 2012 - Los Angeles00YesReport 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.