Foundation repair averages about $5,179, with a typical range of $2,224 to $8,134. Minor crack sealing runs $200 to $800, slab lifting (mudjacking) $550 to $1,300, and piering $1,000 to $3,000 per pier. Big structural jobs with full leveling can reach $20,000 or more. Severity drives the price far more than your foundation type.
What foundation repair costs by method
The number you'll pay depends almost entirely on how far the problem has gone. A hairline crack caught early is a cheap afternoon. The same crack ignored for five years can turn into a multi-pier underpinning job. Here's how the common repair methods compare.
| Repair method | What it fixes | Typical cost |
|---|---|---|
| Crack sealing (non-structural) | Minor cosmetic or moisture cracks | $200 to $800 |
| Mudjacking / slab lifting | Sunken concrete slabs | $550 to $1,300 |
| Piering / underpinning | Settling, sinking foundations | $1,000 to $3,000 per pier |
| Sealing / waterproofing | Water intrusion, damp basements | $2,300 to $7,300 |
| Wall reinforcement (carbon-fiber / steel) | Bowing or leaning walls | $4,000 to $12,000 |
| Full lifting and leveling | Severe whole-structure settlement | $20,000 to $23,000 |
Multi-pier jobs are where budgets get blown. A single pier sounds modest, but a sinking corner often needs several, so real-world piering jobs commonly land between $4,000 and $15,000 or more. Foundation type plays a smaller role than people expect. Costs are similar across most types, with pier-and-beam and older stone foundations being the main exceptions, since they need specialized access and labor.
Warning signs you shouldn't wait on
Foundations move slowly, so the early signals are easy to write off as an old-house quirk. They aren't. Catching these while a repair is still in the $200 to $800 range is the whole game.
- Stair-step cracks running diagonally through brick or block.
- Doors and windows that stick or no longer latch cleanly.
- Floors that slope or feel uneven when you walk across a room.
- Gaps opening up where walls meet the floor or ceiling.
- A crack that keeps coming back after you've patched it.
That last one matters most. A patched crack that reopens means the foundation is still moving, and movement is what turns a sealing job into a piering job. If you see two or more of these together, get a structural engineer's opinion before a contractor's. An engineer charges a flat fee and has nothing to sell you.
The cheapest foundation fix is water you redirect before it arrives
Here's what most cost pages never tell you: the overwhelming cause of foundation movement is water in the soil around your home, and so is the fix. Soil that swells when it's soaked and shrinks when it dries pushes and pulls on your foundation through every season. Control that moisture and you've removed the engine behind nearly every expensive repair on the table above.
The good news is that water management is cheap. A few hundred dollars of grading, gutter, and downspout work is real insurance against the structural tail that runs into five figures. Following guidance from the Milwaukee Metropolitan Sewerage District, here's what keeps the soil around your foundation stable:
- Grade the soil to fall away from the house. Aim for about 6 inches of drop over the first 10 feet. This is the single highest-leverage thing you can do.
- Keep at least 4 inches of foundation showing above the soil. Mulch and garden beds piled against the wall trap moisture right where you don't want it.
- Extend your downspouts 5 to 10 feet out. Roof water dumped at the base of the wall is the fastest way to soak the soil that's holding your house up.
- Keep perimeter moisture consistent. The swings between drought and heavy rain are what drive movement, so soaking the foundation soil during long dry spells helps as much as draining it during wet ones.
This ties directly into your other water systems. Overflowing gutters dump everything against the foundation, so fixing gutters overflowing during rain is foundation work in disguise. If you have a basement, a working sump pump is your last line of defense, and our sump pump checklist walks through keeping it ready. The same wet soil that cracks foundations also feeds mold, so a mold and moisture prevention checklist covers the indoor half of the problem.
Common questions
Is foundation repair covered by homeowners insurance?
Usually not. Standard policies exclude damage from settling, soil movement, and gradual water seepage, which covers most foundation problems. Damage from a sudden covered event, like a burst pipe, may qualify. Read your policy's exclusions before assuming either way.
How do I know if a crack is serious?
Width and pattern are the tells. Thin vertical cracks under about a quarter-inch are often just concrete curing. Horizontal cracks, stair-step cracks in block, and anything wider than a quarter-inch suggest structural movement. A crack that reopens after patching is the clearest sign you need a professional look.
Does a foundation problem mean I can't sell my home?
No, but it lowers offers and can spook buyers. A repair with a transferable warranty and an engineer's sign-off reassures buyers far more than a discount does. Fixing it before listing usually nets more than selling as-is and eating the negotiation.
Can I do any of this myself?
You can handle the prevention, and you should. Grading, downspout extensions, and gutter upkeep are all DIY-friendly. Structural repair itself, piering, wall anchors, and leveling, is not. Those need engineering judgment and equipment, and a bad fix can make the problem worse.
Good maintenance rhythm
- Monthly: Walk the perimeter after heavy rain and check that water is draining away from the wall, not pooling against it.
- Seasonally: Clear gutters and confirm downspout extensions are still carrying water 5 to 10 feet out.
- Yearly: Check grading for settled spots, look for new cracks in walls and floors, and test that doors and windows still close cleanly.
- Ongoing: Keep at least 4 inches of foundation showing above soil and mulch, and keep perimeter moisture steady through drought and downpour.