Foundation Repair Cost Calculator
Pick a repair type and the number of cracks, piers, or sections to get a ballpark foundation repair cost.
What your result means
This is a rough planning number, not a quote. It multiplies a typical per-unit price by your count. Foundation problems are structural and genuinely consequential, so the real first step is a structural engineer's report (about $300 to $700), which tells you what's actually wrong before anyone quotes a fix. Always get two or three professional inspections.
How to use this calculator
- Identify the repair type from the dropdown.
- Count number of cracks, piers, or sections needing work.
- Read estimated cost per unit and total.
- ALWAYS get 2-3 professional inspections - DIY diagnosis is risky.
- Foundation issues can affect home value - address promptly.
The formula
Each repair type has a typical per-unit cost. Multiply that by the number of cracks, piers, or sections for a ballpark total. Actual pricing varies widely by region and severity.
Worked example
Say you've got 3 cracks that need injection. Pick Crack Injection and enter 3. At about $500 a crack, that's a $1,500 ballpark, before an engineer confirms the cracks are non-structural.
Typical foundation repair costs (per unit)
| Repair | Typical cost | Notes |
|---|---|---|
| Crack injection | $300 – $800 | non-structural cracks |
| Piering | $1,000 – $3,000 | settling foundation |
| Underpinning | $2,000 – $5,000 | major structural |
| Waterproofing | ~$800 | per section |
Tips & gotchas
- Crack injection runs $300 to $800 a crack, and only for non-structural cracks.
- Piering is $1,000 to $3,000 a pier, for a settling foundation.
- Underpinning is $2,000 to $5,000 a section. That's major structural work.
- Waterproofing is around $800 a section for sealing.
- Get a structural engineer's report before any major repair, about $300 to $700.
Frequently asked questions
How much does foundation repair cost?
It varies a lot. Minor crack repair is $500 to $2,000; major underpinning can run $10,000 to $50,000 or more.
Do small cracks need repair?
Hairline cracks under 1/8 inch are often cosmetic. Anything wider needs a professional look.
How do I know if my foundation is failing?
Sticking doors, cracked walls, sloping floors, and gaps opening around windows are the classic signs.
Will foundation issues affect my home value?
Yes, significantly, and you have to disclose them to buyers. Fixing before selling usually pays off.
Does insurance cover foundation repair?
Usually not for normal settling, only sudden damage from a covered event. Check your policy.
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Estimates only — see our full disclaimer.