Many factors can affect the cost of house jacking, including the size of the house, the type of foundation, the extent of the damage, your geographical location, and the chosen repair solution. Here in California, as of August 2023, the cost to underpin a foundation generally ranges from 25K to 35K. Each home is different as the problem of settlement is typically never the same. While this might seem like a lot of money, the cost of not fixing a foundation can be far greater in the long run.