Foundation repair cost by issue (2026)
National average ranges. Foundation issues vary enormously by severity — always get a structural engineer evaluation ($300–$1,000) before scheduling repairs.
| Repair type | Typical cost | When needed | Time |
|---|
| Crack repair (cosmetic) | $300–$800 | Hairline cracks, no movement | 1 day |
| Crack injection (epoxy) | $500–$1,500 | Active leaks, larger cracks | 1–2 days |
| Carbon fiber wall reinforcement | $3,000–$8,000 | Bowing/leaning walls, no major shift | 2–4 days |
| Steel I-beam wall reinforcement | $3,500–$10,000 | Significant bowing or moderate shift | 3–5 days |
| Underpinning (push piers) | $8,000–$25,000 | Settled foundation, vertical movement | 5–14 days |
| Helical piers | $10,000–$25,000 | Settled foundation, weaker soils | 5–14 days |
| Slab jacking / mudjacking | $1,000–$3,500 | Sunken concrete slab | 1–3 days |
| Foam jacking / polyurethane | $1,500–$5,000 | Sunken slab, faster than mudjacking | 1 day |
| Waterproofing (interior) | $2,000–$8,000 | Wet basement walls | 2–5 days |
| Waterproofing (exterior) | $5,000–$15,000 | Severe water issues, full perimeter | 5–10 days |
| French drain install | $2,500–$7,500 | Persistent yard/foundation drainage | 3–5 days |
Foundation crack repair cost
Hairline cracks (under 1/8″) often only need cosmetic patching: $300–$800 per crack. These are usually settling cracks that don't indicate structural issues.
Larger cracks or active leaks need epoxy or polyurethane injection: $500–$1,500 per crack. If multiple cracks or signs of foundation movement (doors not closing, sloping floors), get a structural engineer assessment first ($300–$1,000).
Foundation underpinning cost
Settled foundations (vertical drop, sticking doors, cracked drywall in regular patterns) often need underpinning with push piers or helical piers: $8,000–$25,000 total. Per pier cost: $1,000–$3,000. Most projects need 5–15 piers depending on home size.
Helical piers ($1,500–$3,000 each) work better in weak/sandy soils. Push piers ($1,000–$2,500 each) work better in stiff clay soils.
Basement waterproofing cost
Interior waterproofing (sump pump + interior drain tile + sealant) runs $2,000–$8,000. Cheaper but addresses water already in foundation rather than preventing it from getting in.
Exterior waterproofing (excavating around foundation + membrane + drain tile) runs $5,000–$15,000 — the most thorough fix but requires destroying landscaping. Best done preemptively during foundation install.
Foundation repair cost factors
Severity of issue
Cosmetic cracks: cheap. Active settling, bowing walls, or major shifts: expensive (often $10K+). Always get structural engineer assessment first ($300–$1,000).
Foundation type
Crawlspace foundations: easier access, cheaper repairs. Basement: medium. Slab-on-grade: hardest to repair (need to break concrete).
Soil conditions
Expansive clay (heaves with moisture) is hardest. Sandy soils need helical piers. Limestone/bedrock easier to underpin.
Number of piers / sections
Most underpinning jobs need 5–15 piers. Each pier $1,000–$3,000. Engineer determines number based on weight + soil load.
Permits + engineering
Engineer assessment $300–$1,000. Structural permits $400–$1,500. Required for all underpinning + most wall reinforcement.
Drainage solutions
Often paired with foundation work. French drain $2,500–$7,500. Sump pump $800–$2,500. Yard regrading $500–$3,000.
Foundation repair cost by city
Local pricing benchmarks across major US metros.
New York, NYChicago, ILHouston, TXDallas, TXAtlanta, GAColumbus, OHIndianapolis, INCincinnati, OHKansas City, MOMemphis, TNNashville, TNCharlotte, NCRaleigh, NCJacksonville, FLTampa, FLOklahoma City, OKMinneapolis, MNMilwaukee, WIDetroit, MICleveland, OHBaltimore, MDLouisville, KYBirmingham, AL
Frequently asked questions about foundation repair cost
How much does foundation repair cost?
Cosmetic crack repair: $300–$1,500. Carbon fiber wall reinforcement: $3,000–$8,000. Underpinning (settling foundation): $8,000–$25,000. Always get a structural engineer assessment first ($300–$1,000) to avoid unnecessary work.
How do I know if my foundation needs repair?
Warning signs: doors that don't close, cracks wider than 1/4″, sloping floors, gaps between walls and ceiling, water in basement, brick stair-step cracks. Get a structural engineer evaluation if you see 2+ of these.
Will insurance cover foundation repair?
Usually no — standard homeowners insurance excludes settling/cracking foundations. Exceptions: damage from a covered event (sudden plumbing leak, vehicle impact, earthquake with rider). Always read your policy.
How long do foundation repairs last?
Quality underpinning is permanent (50+ years). Wall reinforcement (carbon fiber, steel I-beams) is permanent. Crack injection lasts 5–15 years before re-treating may be needed. Quality contractors offer 25-year+ warranties.
Is mudjacking the same as foam jacking?
Both raise sunken concrete slabs, but use different fillers. Mudjacking ($1,000–$3,500) uses cement slurry — cheaper, heavier, larger drill holes. Foam jacking ($1,500–$5,000) uses polyurethane foam — faster cure, smaller holes, won't add weight to the soil.
