Hello, I am looking at buying an investment propery for about $36,000 where houses comparable in the same neighborhood sell for about $100,000. The only problem is that the house has some serious structure issues underneath. The main girder is sinking were it meets the chimney on both sides in the center of the house. This in turn has caused the center load balancing walls on both sides of the chimney to sag which also has caused the roof to sag. I have experience jacking a couple of homes and this house is completley gutted to the studs which will make things a little easier. I am thinking of jacking on both sides of the chimney, building up stable piers and supports on both sides. I will then demo the chimney and replace most of the girder to the correct level. I am sure I will have to do some work on the roof as well. Am I being over confident here?