Foundation Repair Cost Calculator
* Estimates for budgeting purposes. Foundation repair requires professional inspection. Get multiple quotes for exact pricing.
Disclaimer: Estimates are for budgeting purposes only. Actual costs vary by location, contractor, material availability, and project complexity. Always get professional quotes for exact pricing.
Foundation Repair Cost by Type
| Repair Type | Unit | Cost Range | Typical Project |
|---|---|---|---|
| Crack Repair | Per crack | $250 – $800 | $750 – $2,400 (3 cracks) |
| Pier & Beam Support | Per pier | $1,000 – $2,500 | $8,000 – $20,000 (8 piers) |
| Slab Jacking | Per sq ft | $3 – $7 | $1,200 – $2,800 (400 sq ft) |
| Waterproofing | Per linear ft | $50 – $150 | $5,000 – $15,000 (100 ft) |
| Underpinning | Per pier | $1,500 – $3,500 | $15,000 – $35,000 (10 piers) |
How We Calculate
Our foundation repair calculator estimates costs based on repair type and quantity. Each repair type has different unit pricing: crack repairs are priced per crack, pier support per pier installed, slab jacking per square foot, and waterproofing per linear foot.
How the math works: Total cost = number of units × cost per unit. Different repair types use different units of measurement based on industry standards for that repair method.
Repair Type Comparison
Crack Repair & Sealing ($250–$800 per crack) uses epoxy or polyurethane injection to fill and seal cracks. Only suitable for cracks under 1/2 inch caused by minor settling. Does not address underlying structural issues. Typical home needs 2–5 crack repairs.
Pier & Beam Support ($1,000–$2,500 per pier) installs steel or concrete piers deep into stable soil to support settling foundation. Most effective repair for major settling. Typical home needs 8–12 piers. Includes hydraulic lift to level foundation. Lasts 25+ years with proper drainage.
Slab Jacking / Mudjacking ($3–$7 per sq ft) pumps concrete slurry or polyurethane foam under sunken slab to lift it. Works for slabs that have sunk due to soil erosion. Cannot fix cracked slabs. Typical repair area is 300–500 sq ft. Polyurethane costs 2× more but cures in 15 minutes vs 24 hours for concrete.
Basement Waterproofing ($50–$150 per linear foot) installs interior or exterior drainage systems, sump pumps, and waterproof coatings. Essential before finishing basements. Typical basement perimeter is 80–120 linear feet. Exterior waterproofing costs 2× more but is more effective long-term.
Foundation Underpinning ($1,500–$3,500 per pier, typically 10–16 piers needed) extends foundation depth to stable soil. Most extensive repair method. Required when foundation has failed or needs to support additional stories. Total project: $15,000–$56,000. Requires structural engineering.
Additional Cost Factors
Our estimates cover basic repair work. Not included: structural engineering report ($500–$1,500, usually required), permits ($200–$800), soil testing ($500–$2,000), drainage improvements ($1,000–$5,000), landscaping restoration ($500–$3,000), and interior cosmetic repairs to walls/floors damaged by foundation movement ($2,000–$10,000).
Prevention & Long-Term Solutions
Foundation repair only addresses symptoms. Prevent future damage by: improving drainage away from foundation (gutters, grading, French drains), maintaining consistent soil moisture (soaker hoses during drought), keeping trees 15+ feet from foundation, fixing plumbing leaks immediately, and installing root barriers near large trees. Budget $1,000–$5,000 for drainage improvements — far cheaper than future repairs.
Choosing a Contractor
Foundation repair is high-stakes work. Only hire licensed structural engineers or contractors with foundation-specific licenses. Check: 10+ years experience, structural engineering certifications, transferable lifetime warranty, local references, Better Business Bureau rating. Get 3+ quotes. Beware lowball bids — often indicate inferior methods or materials. Expect detailed written proposals with engineering drawings and repair method specifications.
Data Sources
Pricing data is compiled from HomeAdvisor, Angi, Foundation Repair Network, structural engineering firms, and verified contractor estimates across multiple US regions. We review and update this data regularly.
Last updated: 2026-02-09
Frequently Asked Questions
How much does foundation repair cost? +
Foundation repair costs $2,000–$15,000 on average, depending on repair type and severity. Minor crack sealing runs $500–$2,400. Pier and beam support costs $8,000–$20,000. Slab jacking costs $1,200–$2,800. Full foundation replacement costs $20,000–$100,000+. Most homeowners spend $4,500–$10,000.
How much does foundation repair cost by type? +
Crack repair: $250–$800 per crack. Pier installation: $1,000–$2,500 per pier (typically need 8–12 piers). Slab jacking: $3–$7 per sq ft. Basement waterproofing: $50–$150 per linear foot. Foundation underpinning: $15,000–$35,000 for full perimeter. French drain installation: $2,000–$6,000.
What causes foundation problems? +
Poor drainage is the #1 cause — water pooling around foundation causes soil expansion/contraction. Tree roots extract moisture unevenly. Poor soil compaction during construction. Plumbing leaks saturate soil. Drought causes soil shrinkage. Earthquakes in seismic zones. Normal settling in first 1–2 years is expected, but ongoing movement indicates problems.
How do I know if I need foundation repair? +
Warning signs: cracks wider than 1/4 inch in walls or foundation, doors/windows sticking, uneven or sloping floors, gaps between walls and ceiling/floor, chimney tilting, basement water intrusion, or visible foundation bowing. Get professional inspection ($300–$600) if you see multiple signs.
Can I do foundation repair myself? +
Minor crack sealing (< 1/4 inch) can be DIY with epoxy or polyurethane injection kits ($50–$200). Anything structural — piers, underpinning, slab jacking, major cracks — requires licensed professionals. DIY structural repairs void home warranties, cause worse damage, and make homes unsellable. Most foundation work requires permits and engineering.
How long does foundation repair take? +
Minor crack repair takes 1 day. Pier installation (8–12 piers) takes 2–5 days. Slab jacking takes 1–2 days. Full perimeter underpinning takes 2–4 weeks. Basement waterproofing takes 3–5 days. Add 1–2 weeks for engineering report and permit approval before work begins.
Is foundation repair covered by insurance? +
Standard homeowners insurance does NOT cover foundation repair from settling, soil issues, or poor construction. Insurance may cover damage from sudden events (earthquake, flood, burst pipe) if you have that specific coverage. Foundation repair is considered maintenance. Some policies cover resulting damage (cracked walls, floors) but not foundation itself.
Does foundation repair increase home value? +
Foundation repair doesn't increase value — it prevents value loss. Unrepaired foundation issues can reduce home value 10–20% and make homes unsellable. Repaired foundation with engineering certification restores value to market rate. Disclosure laws require revealing past foundation issues even after repair, but professional documentation proves it's resolved.
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