Although it is certainly possible to sell your home with an active foundation defect, it is suboptimal. The National Association of Realtors states that an untreated foundation problem can reduce the fair market value of a home by a staggering 10%-15%. In most cases that is double or triple the repair costs.  Even worse, two thirds of buyers state that they will not even bid on a home with an active foundation defect.  So in the end, not only is it cheaper to fix the problem than not to, it is far easier to eventually sell a home that has been repaired.