I live in an older house in a new development, i am needing to pour a foundation under my house and install new lumber. I have never done the jacking up part and don't know where to begin. I am digging down the grade under the house this weekend (05/10/03). I have been online for days looking for this information so if anyone knows how to jack up a house (just to level it, maybe 12") and the best way to go about it please let me know. Thanks everyone..