We will be getting an engineering report for foundation work in North Texas. There is a 7" drop over about 20 feet of slab (it is cracked about two thirds of the way along the 20 feet). What do you do with the space that will be created once the lift occurs? Also it seems most companies I have talked to don't want to address gas/sewer line, windows and exterior/interior stone work. That just scares me a tad. They all want is to get the work of lifting the slab (yes, it is a slab) but shy away from other issues that I mention. Am I just talking to the wrong people? Is a General Contractor needed to see all this through? Permits are required. As always, the Chat sessions are great and an early Thank You to those who reply and offer advice.