A sinking foundation can potentially cost thousands or even tens of thousands of dollars to repair. Once your foundation begins to sink, it can cause damage to other parts of your home and even make it unsafe for continued habitation. Fortunately, foundation contractors have many techniques at their disposal to shore up a flagging home foundation. Surprisingly, one of these techniques is a complete replacement. If a foundation's problems are severe enough, contractors can lift and support your home's upper levels to allow the construction of a new foundation.