Foundation repair has the widest price range of any work on a house: the same two words cover a few-hundred-dollar crack seal and a five-figure underpinning job. What sets your number is the diagnosis — what is actually wrong, and how much of the foundation it affects. Here is where the money goes, repair by repair.
The short answer
What drives the price
- The repair type. Sealing a crack, bracing a bowing wall, and underpinning a settling foundation are different jobs an order of magnitude apart in cost.
- The extent. Repairs scale with the affected length — the number of piers, the number of wall anchors, the feet of crack.
- Access and depth. Piers driven deeper to reach load-bearing soil, or work under a finished space, cost more.
- The cause, if it is ongoing. If water or soil movement is still acting on the foundation, stopping it (drainage, grading) is part of a lasting fix, not an optional extra.
Typical repairs, low to high
- Crack injection / sealing: the low end. An epoxy or polyurethane injection closes a non-structural crack against water.
- Bowing wall stabilization: mid-range. Carbon-fiber straps for a mild bow, steel I-beams or wall anchors for a worse one. Our bowing wall guide covers the methods.
- Pier underpinning: the high end. Push or helical piers lift and stabilize a settling foundation; cost scales with pier count.
Catch it early — it only gets more expensive
Foundation problems compound. A crack that would take a cheap injection today becomes a structural repair once water and soil movement widen it. In cold regions that clock runs faster: repeated freeze-thaw cycles heave the ground and work cracks open over a winter. Learn the warning signs so you act while the fix is still small.
For a region-tuned range and matched local contractors, see our foundation repair cost report or your city page.