What Does Foundation Repair Cost?
Foundation repair costs between $5,000 and $30,000 for pier stabilization, the structural repair most people mean, with a national average of $11,950 across all repair types. The range is enormous because foundation problems are so different from one another: sealing a single non-structural crack is a minor job, while underpinning a settling foundation is major structural work. What you pay depends almost entirely on the type and severity of the damage and the repair method it requires.
Minor Crack Repair: $500 to $2,000 Per Crack
A non-structural crack — a hairline crack from concrete shrinkage, or a minor settlement crack under 1/4 inch with no displacement — is sealed with epoxy or polyurethane foam injection at $500 to $2,000 per crack, depending on crack length and access, so two or three of them add up quickly. Epoxy injection restores the concrete’s structural continuity and suits cracks in load-bearing walls where strength matters. Polyurethane foam injection is flexible and waterproof, which suits basement wall cracks where water infiltration is the concern and the element is not load-bearing. A homeowner can fill minor cosmetic cracks with polyurethane crack sealant for $20 to $50 in materials, though the professionally injected systems penetrate deeper and seal more durably.
Which kind of crack you have determines whether you are in this low range at all. Hairline and thin vertical cracks from normal curing seal cheaply. Horizontal cracks, or stair-step cracks running through block or brick, usually signal soil or settling pressure and push the job into the structural range.
Typical Structural Repair: $5,000 to $20,000
Piering is the workhorse of foundation repair: steel push piers or helical piers are installed under the footing and driven down to stable soil or bedrock, transferring the structure’s load past the problem layer and often lifting the foundation back toward level. A single steel push pier costs $1,000 to $3,000 installed, and a typical residential repair needing 5 to 15 piers runs $5,000 to $20,000. Helical piers post higher, at $3,500 to $4,400 each. Ask a contractor for the unit price and the pier count rather than a single blended total. Cost scales with how many piers the span requires, so a localized settled corner sits well below a long wall that needs a whole line of piers. (For more on this, see Foundation Repair Mistakes to Avoid.)
Bowing basement walls are stabilized differently, with wall anchors at $500 to $1,200 per anchor installed, or carbon fiber straps at $725 to $800 per strap. A 20-foot basement wall with moderate bowing typically takes 4 to 6 anchors, for a total of $2,000 to $7,200; a 24-foot wall takes about five carbon fiber straps, or $3,625 to $4,000.
Major Underpinning: $15,000 to $25,000 or More
Extensive structural reinforcement — underpinning a large section of the foundation, replacing failed sections, or stabilizing a severely compromised basement wall — runs $15,000 to $25,000 or more. Underpinning goes deeper and wider than routine piering, extending support down to competent soil across a large portion of the structure. These projects involve significant excavation, shoring, and new structural elements, essentially a major reconstruction of the foundation while the home stays in place. A structural engineer is required for design and oversight at this scale, and given the sums involved, a recommendation for work at this level is worth confirming with an independent opinion.
Foundation Repair Cost at a Glance
| Repair | Cost |
|---|---|
| Minor crack repair, professional injection | $500 to $2,000 per crack |
| DIY crack sealant materials | $20 to $50 |
| Slab jacking or concrete lifting | $500 to $3,500, or $4,500 to $11,500 for a structural slab under the house |
| Single steel push pier, installed | $1,000 to $3,000 |
| Single helical pier, installed | $3,500 to $4,400 |
| Typical residential piering, 5 to 15 piers | $5,000 to $20,000 |
| Wall anchor, installed | $500 to $1,200 per anchor |
| Carbon fiber strap, installed | $725 to $800 per strap |
| Bowing 20-foot wall, 4 to 6 anchors | $2,000 to $7,200 |
| Bowing 24-foot wall, about five carbon fiber straps | $3,625 to $4,000 |
| Major underpinning | $15,000 to $25,000+ |
| Structural engineer assessment | $300 to $700 |
| Overall range | $5,000 to $30,000 |
| National average, all foundation repair types | $11,950 |
Cost figures on this page were checked against published pricing on August 27, 2026. How we source cost data.
Signs You Need a Foundation Assessment
Foundation problems announce themselves through the structure above them. Watch for cracking walls, doors and windows that stick or no longer latch, and floors that slope or feel uneven. On the foundation itself, horizontal cracks and stair-step cracks through block or brick indicate pressure or differential movement, while thin vertical hairlines usually do not. Displacement matters more than length: a crack wider than 1/4 inch, or one where the two sides no longer line up, belongs in the structural category.
Some settling is normal. Virtually every structure settles as the soil adjusts to the building’s load, and that settling is uniform, minor, and finished within 1 to 5 years of construction. What warrants an engineer is movement that is uneven, still progressing, and producing the symptoms above.
What Else Moves the Number
Beyond the repair method, cost tracks the number and severity of problem areas, the foundation type and depth, and access — a finished basement or a tight site complicates the work and raises the labor. The cause matters too: ongoing water or soil movement usually has to be addressed alongside the structural fix, or the repair will be undone by the same forces that caused it. (For more on this, see Questions to Ask Before Hiring a Foundation Repair Contractor.)
Region matters more here than on most home projects, because foundation problems are largely driven by local soil. Expansive clay soils that swell and shrink with moisture are a common culprit in some parts of the country and largely absent in others, so both the likelihood of trouble and the going rate for the specialized labor to fix it vary meaningfully by market. A single localized repair is far cheaper than whole-foundation stabilization. (For more on this, see What Makes Foundation Repair Cost More (or Less)?.)
Getting an Accurate Price
Because the range spans a single $500 crack seal to tens of thousands, an on-site assessment is what turns an anxious guess into a real number. An independent structural engineer assessment costs $300 to $700 and is the single best spend before any major repair — it establishes whether the problem is cosmetic, normal settling, or genuine structural failure, and it prevents both over-spending on unnecessary piers and under-spending on a problem that will keep moving.
Treat the ranges here as planning benchmarks, not fixed prices. Get at least two written quotes on an equivalent, defined scope; wide variation between bids usually reflects differences in scope completeness or contractor overhead rather than price competition. Ask what the pier count assumes, whether permits, cleanup, and disposal are included, and what the labor warranty covers and whether it transfers to a future owner. For any project over $500, get the scope in writing, and tie payments to milestones rather than paying in full upfront.
Frequently Asked Questions
Foundation repair runs $5,000 to $30,000, with a national average of $11,950 across all repair types. Minor crack sealing is $500 to $2,000 per crack, piering for structural settlement is $1,000 to $3,000 per pier at 5 to 15 piers, so $5,000 to $20,000, wall anchors for a bowing wall are $2,000 to $7,200, and major underpinning reaches $15,000 to $25,000 or more.
Sealing or epoxy-injecting a non-structural crack runs $500 to $2,000 per crack, depending on length and access. These are the hairline and minor settlement cracks that let in water or air but do not threaten the structure. DIY polyurethane crack sealant costs $20 to $50 in materials, but professional injection penetrates deeper and lasts longer.
Piering, stabilization, and settlement correction fall in the $5,000 to $20,000 range for most homes. A single steel push pier is $1,000 to $3,000 installed and a helical pier $3,500 to $4,400, and a typical repair using 5 to 15 piers runs $5,000 to $20,000. Cost scales with the number of piers the settled span requires.
Underpinning is extensive structural reinforcement -- deep piers and new structural elements that rebuild a foundation's support across a large section -- for a foundation that has significantly failed or settled. It costs $15,000 to $25,000 or more and requires a structural engineer for design and oversight.
Full foundation replacement, which means removing and rebuilding the foundation while the home is temporarily supported on steel columns, at $30,000 to $100,000 or more. It is reserved for foundations that have failed beyond repair. Most residential foundation problems are addressable for $5,000 to $20,000 if caught before complete structural failure.
A known, unrepaired foundation problem significantly decreases value, since buyers and lenders require it to be addressed. A properly repaired foundation with a transferable warranty restores value and is usually neutral to slightly positive relative to a home with no foundation history, because the problem was identified, evaluated, and documented. Disclose all past and current issues at sale.
Yes, but disclosure is required and the buyer's lender will require the issue to be resolved before lending. You can repair before listing, which is most effective for value, price the home to reflect the repair cost, or offer a seller's concession. An unaddressed major problem will surface in the buyer's inspection and either kill the sale or force a large price reduction.
Normal settling is uniform, minor, and finished within 1 to 5 years of construction as the soil adjusts to the building's load. Failure is differential settling that is uneven, ongoing, and producing symptoms like cracking walls, sticking doors, and sloping floors. An engineer distinguishes them from the crack patterns, the displacement amounts, and the rate of change.