Can I purchase a house with Foundation issues for Flip

[Rajagopalarao Paidi]

How much value goes down for a house with foundation issues, found a house for FixNFlip, they mentioned it has foundation issues and they got them fixed, but whats the value reduction from market price , How safe it is to purchase house like these 

[Carini Rochester]

"has foundation issues and got them fixed . . ." Way too vague! What were the extent of the issues? What steps went into getting the issues fixed? Was a licensed engineer involved to design to repairs? Was a building permit issued? Was the work inspected? If the remedy was designed by a qualified professional, the work carried out be an experienced contractor, the work was permitted and inspected by the town, then the value reduction would be zero. If shortcuts were taken, and/or your inspector sees problems with the repairs, then it might be the worst case scenario that you would walk away from. I have been involved in many foundation repairs and we get the improved foundation up to as good or better than new.