Foundation Repair Cost: From Hairline Cracks to Underpinning
Foundation repair ranges from $250 for a single crack to $20,000+ for a sinking or settling foundation, with most homeowners paying between $2,200 and $8,100 for a typical repair.
What drives the price
Foundation repair cost depends almost entirely on the type and severity of the problem, not the size of the house alone. A single hairline crack is a very different job from a sinking or settling foundation, and quotes reflect that.
| Issue | Average repair cost | Common repair method |
|---|---|---|
| Single foundation crack | $250 – $800 | Epoxy injection or crack stitching |
| Foundation leak | $2,000 – $12,000 | Crack sealing, drainage, waterproofing |
| Settling or sinking foundation | $4,500 – $20,000 | Mudjacking, piering, helical piers |
Cost by foundation type
| Foundation type | Average repair cost |
|---|---|
| Concrete slab | $1,000 – $10,000 |
| Crawlspace | $2,500 – $8,000 |
| Pier and beam | $2,000 – $15,000 |
| Basement (minor) | $500 – $2,000 |
| Basement (major) | $2,500 – $25,000 |
The one step that shouldn't be skipped
A professional structural inspection typically costs $300 to $1,000 and is the single most important step before agreeing to any foundation repair. It determines whether you're dealing with cosmetic settling (often normal and inexpensive to address) or an active structural problem that needs piers or underpinning. Skipping the inspection and going straight to a contractor's repair quote risks paying for work you don't need, or missing work you do.
What pushes cost toward the high end
- Pier installation — concrete or hydraulic piers typically run $1,300–$1,500 each, and a serious settling repair can require a dozen or more.
- Soil reports — $500–$3,000 when engineers need to assess soil conditions before designing a fix.
- Drainage problems — if poor grading or drainage caused the issue, fixing the root cause adds to the bill but prevents the repair from failing again.
- Permits — typically $75–$150, required in most jurisdictions for structural foundation work.
Is your quote reasonable?
For a typical foundation repair (not a single crack, not a full home-raising), a quote in the $2,200–$8,100 range lines up with multiple independent cost surveys. If a contractor quotes major repairs (piering, underpinning) without first recommending or performing a structural inspection, that's worth questioning — the inspection is what justifies the scope, not the other way around.
Last updated: August 2026