I have a frame house that sits on blocks and it has settled over the years and now so much so that the walls are beginning to crack. What can be done? And can you recommend a company in Jacksonville, Florida to help solve this problem or can you tell me what kind of company to look for and what may be entailed in getting this resolved. I live about 12 blocks from the beach and now we can tell the difference in how the ground feels around the house. It has a spongey feel to it; like there is no sturdy substance underneath the topsoil.