i totally agree with this person, if you can do it yourself you will save some money and your not out the labor to pay someone. Glad this was posted.We have a rental property in New Orleans that was flooded big time by Katrina. One end of the house needed leveling before the storm. I am too cheap to pay someone to do anything I can figuure out how to do myself, so I bought four 20 ton hydraulic jacks from Harbor Freight ($34 bucks apiece out the door) and my brother and I jacked it up, shimmed it where needed with treated 1x6, 2x6, 4x6 and 6x6. It level withing 1/8th of an inch all around the perimeter. We used 12x12 logs that are about 20 inches tall to elevelate the jacks high enough to get them under the house and placed steel plates between the jacks and support structure (to keep the jack shafts from sinking into the 6x6 wood on which the house sits. You just raise it a couple of inches at a time. It's no big deal. Our house is 1000 Sq Ft. and one of those jacks would lift the entire corner of the house so easily that it was hard to believe. This is too easy to do if you can get another guy to help you and you've got one day to plan and size things up, and two days to work your way around the house. We raised ours almost an 12 inches on one corner.