We had our foundation leveled by Olshan 3 years ago. We have 30 Cable lock pilings around the exterior walls of our house. The pilings are about 8' apart. Now our house has sunk 2" in the front again and Olshan is telling us we now need interior pilings for more support. Our house is only 30' deep from front to back. Can a foundation actually "sag" in the middle as much as 1 1/2"?
What questions should I have answered before I have any work done?
Any advise would be helpful.
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