As far as being practical - it isn't. If you are planning an addition and looking into gaining basement space, your money may be better spent buying a larger house.
I'm in the process of planning an addition to my house. For the addition I want to have a basement as opposed to the existing crawl space. How practical would it be to raise the house to put in a basement all the way across the house from where the addition is (about 1/2 of the existing house)? Would it be better, more cost effective, to do the entire existing crawl space into a basement? I'm just wondering if any one has any kind of experience with it, good or bad.
I am planning on having a professional do the excavation and foundations, I don't think raising a house is a DIY project.