How Much Does Foundation Repair Cost in 2026?
National ranges, materials + labor · Pricing data updated · Reviewed annually
Stabilizing one settling corner with steel push piers costs $4,750 to $9,250, around $7,000, and piering one full side of a house runs $11,500 to $22,500. The biggest lever is how many piers, anchors or straps the quote includes, so start with an independent engineer's report: $400 to $800 with crack monitoring.
This page covers structural repair only: settlement, bowing walls, sagging floors and slabs that move. Water coming in is a different trade; see basement waterproofing cost. Building new or replacing a wall? The foundation wall calculator and footing size calculator show what the IRC requires.
First: what is the house telling you?
| Symptom | Likely cause | First step |
|---|---|---|
| Hairline vertical crack in a poured wall, under ⅛ in., edges level | Concrete shrinkage | Monitor; seal only if it leaks |
| Stair-step crack along block mortar joints | Settlement, or the wall pushed in at the corners | Monitor; engineer if over ⅛–¼ in., offset, or with a horizontal crack |
| Horizontal crack in block or poured concrete | Soil, water or frost pressure on the wall | Structural engineer at any width |
| Wall bowing or leaning inward | Lateral soil pressure, often saturated backfill | Engineer → straps, anchors, braces or tiebacks |
| Doors and windows sticking, drywall cracks at corners | Movement, or just seasonal humidity | Watch through the seasons; engineer if it keeps getting worse |
| Sloping floor on a slab | Settlement or heave | Engineer with a floor-elevation survey |
| Sagging or bouncy floor over a crawl space | Rotted or undersized joists or girders, failed posts | Engineer or framing contractor |
| High spots in an interior slab | Expansive clay swelling, or an under-slab plumbing leak | Plumbing leak test before anything else; piers don't stop heave |
| New cracks after a drought | Clay shrinking under the perimeter | Keep the soil moisture steady and watch through a wet season |
Most foundation movement starts with soil changing as its moisture changes. Saturated backfill pushes walls in, clay swells and shrinks under slabs, and roof water dumped at one corner softens the soil there. Fixr notes that bowing walls often point to a drainage problem outside, and even Olshan, a repair contractor, recommends gutters, grading, drainage and a foundation watering routine as early fixes. Piers stop further settlement; they do not fix the water that caused it.
How wide is too wide?
- Under ⅛ in. with no offset: usually shrinkage. Monitor it.
- ⅛ to ¼ in.: watch closely and look for other signs.
- Over ¼ in.: have a professional look.
- At any width, call an engineer if the crack is horizontal, one side sits higher or proud of the other, it is wider at one end, it grows between readings, or the wall is bowing.
These widths are rules of thumb repeated across inspectors and repair guides (Fixr, Angi, HomeAdvisor), not a code or engineering standard.
How much bow before it needs anchors?
- Under about 2 in. of bow: carbon-fiber straps or steel braces usually work.
- About 2–4 in.: wall anchors, braces or helical tiebacks.
- Beyond about 4–6 in.: straightening or rebuilding the wall. Angi puts the replacement point at about 6 in.
Sources disagree on where straps stop and anchors start (Angi and Today's Homeowner split it in opposite directions), so treat these as a range and let the engineer decide.
Monitor a crack before you pay for a repair
- Mark each end of the crack with a pencil line and the date.
- Measure the width at a fixed point with a crack gauge or ruler.
- Take dated photos from the same spot with a ruler in the frame.
- Check monthly through at least one wet and one dry season, and note doors that stick.
- Growth, a new offset or a new horizontal crack means it is time for the engineer. Stable readings are good evidence against an urgent pier sale.
Get an engineer before a foundation company
A foundation company's free inspection is a sales visit from the company that profits from the number of piers. An independent structural engineer sells a diagnosis, not a repair. Olshan's own cost page recommends getting an engineer's report first and then asking repair companies to price it. An engineer's inspection and written report runs about $300 – $1,000. A good report includes:
- Photos and site observations
- A floor-elevation survey, with tilt and deflection compared to accepted limits (about 1% tilt and L/360 deflection per FPA-SC-13-1)
- A crack map with widths, and wall-bow measurements
- Drainage and grading observations
- The cause, and whether the house is stable enough to monitor
- If repair is needed: the method, where each unit goes and how many, and depth or capacity criteria
- Whether to lift or only stabilize, plus drainage corrections and how the repair will be checked
Foundation repair cost by project
Installed ranges at the national average. Pier, wall and crack jobs include the engineer's report; pier and wall jobs include a permit allowance. Each is built from the unit count shown times the typical unit price.
| Project | Installed | Likely |
|---|---|---|
| Engineer report + monitoring onlyIndependent inspection, then watching the cracks for a season | $400 – $800 | $600 |
| Structural crack repair, one wallEpoxy injection with stitching staples or carbon-fiber stitches on ~2 cracks | $1,500 – $3,000 | $2,250 |
| One settling corner, push piers3–4 steel push piers under the corner footing | $4,750 – $9,250 | $7,000 |
| One settling corner, helical piersSame corner on 3–4 helical piers (lighter structures, no house weight to push against) | $7,500 – $15,000 | $11,250 |
| One full side of the house, push piers8–10 piers along a 50–60 ft wall | $11,500 – $22,500 | $17,000 |
| Bowing basement wall, wall anchors~30 ft wall, 6 anchors at ~5 ft spacing | $2,750 – $5,250 | $4,000 |
| Bowing basement wall, carbon-fiber straps~30 ft wall, 8 straps at ~4 ft spacing (bowing under about 2 in.) | $4,000 – $8,000 | $6,000 |
| Sagging floor over a crawl space4 adjustable steel support posts and 6 sistered joists | $4,000 – $8,000 | $6,000 |
| Lift a garage or patio slab, mudjacking~250 sq ft of sunken slab lifted with cement grout | $1,000 – $1,900 | $1,400 |
| Lift a garage or patio slab, polyurethane foamSame ~250 sq ft lifted with expanding foam (smaller holes, lighter fill) | $2,000 – $4,000 | $3,000 |
National cost guides put the average foundation repair job near $5,200 (Fixr, This Old House, Forbes Home). Olshan, a national repair contractor, reports about $12,000; its jobs skew toward Texas slab piering and whole-house scopes.
Estimate your repair
Pick the repair and your region, then add what applies. Add-ons that don't fit the repair you picked, or are already part of it, are locked.
Get Free Masonry & Stucco Quotes From Local Pros
Compare real pricing from licensed masonry contractors in your area.
By submitting this form, your information will be sent to our partner Networx, which will match you with local contractors. We may receive a referral fee for qualified matches at no cost to you.
Add-on costs
At the national average, the same on any job they apply to. Included means the project totals above already count it for a pier job.
| Add-on | What's involved | Adds |
|---|---|---|
| Engineer-stamped repair plan | Drawings many building departments require for the permit | +$500 – $3,000 |
| Soil (geotechnical) report | Borings and lab tests where the building official or engineer asks for them | +$1,000 – $5,000 |
| Structural engineer's report | Independent inspection and written recommendation | Included |
| Permit | Usually required for piers and wall bracing; valuation-based in many cities | Included |
Settlement: piers and slab lifting
Piers carry the house down to firmer soil or rock. They stop further settlement; lifting the house back toward level is an extra step with extra risk. Slab lifting raises a sunken slab but leaves the soil that let it sink.
| Item | Typical range | Unit | Notes |
|---|---|---|---|
| Steel push pier | $1,000 – $3,000 | each | Driven to refusal using the house weight; typically 5–8 ft apart |
| Helical pier | $2,000 – $4,000 | each | Screwed in to a target torque; works for lighter loads |
| Concrete pressed pile | $700 – $1,700 | each | Common in Texas and the Gulf |
| Mudjacking | $3 – $9 | per sq ft | Cement grout pumped under a sunken slab |
| Polyurethane foam lifting | $5 – $25 | per sq ft | Lighter and faster; smaller holes |
| Slab-lift job minimum | $300 – $700 | per job | Small jobs hit the contractor minimum |
Bowing and leaning walls
Spacing turns a per-unit price into a per-foot one. Published whole-job totals for bowing walls run much higher than the unit math because they often bundle excavation, drainage and engineering, so compare quotes by the unit.
| Item | Typical range | Unit | Notes |
|---|---|---|---|
| Wall anchor (plate anchor) | $400 – $1,000 | each | Every ~5 ft: about $80–$200 per LF of wall |
| Carbon-fiber strap | $350 – $1,000 | each | Every ~4 ft: about $85–$250 per LF; bowing under ~2 in. |
| Steel I-beam brace | $400 – $1,500 | each | Every 4–6 ft; floor-to-joist bracing |
| Helical tieback | $1,500 – $2,000 | each | Every ~5 ft: about $300–$400 per LF |
| Excavate and straighten the wall | $340 – $550 | per LF | Includes straps after straightening |
| Rebuild the wall | $300 – $1,250 | per LF | Low confidence; few national sources |
Crawl spaces, cracks and engineering
| Item | Typical range | Unit | Notes |
|---|---|---|---|
| Adjustable steel support post | $500 – $2,500 | each | Basic posts $500–$1,000; branded engineered systems at the top |
| Sister a floor joist | $150 – $1,000 | per joist | New lumber bolted alongside a sagging or cracked joist |
| Replace a floor joist | $350 – $1,000 | per joist | — |
| Repair or replace a girder | $1,500 – $5,000 | per girder | — |
| Crawl-space encapsulation (reference) | $1,200 – $32,000 | per job | Moisture work, not structural; vapor barrier at the low end |
| Item | Typical range | Unit | Notes |
|---|---|---|---|
| Structural crack repair | $300 – $2,000 | per crack | Epoxy plus stitching, up to ~10 ft; only once movement has stopped |
| Structural engineer's inspection and report | $300 – $1,000 | per visit | — |
| Engineer-stamped repair plan | $500 – $3,000 | per job | — |
| Geotechnical (soil) report | $1,000 – $5,000 | per job | — |
| Drainage correction and regrading | $2,800 – $8,000 | per job | Often the real fix for clay movement (Olshan) |
| Slab replacement | $6 – $15 | per sq ft | Plus flooring removal and replacement |
Structural crack repair restores a wall that has stopped moving. Sealing a crack that only leaks is waterproofing and is priced on the basement waterproofing cost page.
What else raises the price
These clearly change a quote, but no source publishes a reliable figure for how much, so they aren't in the estimator. Ask each contractor how their price accounts for them.
- How deep the piers go. Pier prices usually include a set depth. If firm soil or rock is deeper, contractors charge for every extra foot, so ask what depth the price assumes and what each extra foot costs.
- Piers inside the house. Interior piers mean coring the slab, digging by hand and patching the floor, which costs more than piers outside.
- Lifting vs. stabilizing. Stopping further settlement is the base job. Raising the house back toward level costs more and can crack drywall, bind doors and strain plumbing.
- Expansive clay. Clay that swells and shrinks often needs deeper piers and moisture control, and Fixr reports clay soil has the highest average repair costs.
- Block or stone walls. Concrete block walls crack and bow along their joints, and stone or rubble foundations in older homes need an engineer with preservation experience. Both tend to cost more than poured concrete.
- Access. A finished basement, decks, patios, landscaping or a tight crawl space all add removal and restoration work.
- Cosmetic repair afterward. Drywall, trim, doors and flooring that cracked or shifted are usually a separate bill.
Cost by region
| Region | Where | Settling corner | Full side |
|---|---|---|---|
| Lower-cost area | Rural South and Midwest | $4,000 – $7,750 | $9,750 – $19,250 |
| National average | Most metros | $4,750 – $9,250 | $11,500 – $22,500 |
| High-cost area | Coastal metros, Northeast, DC | $6,750 – $13,000 | $16,000 – $31,500 |
Codes and standards
- Where expansive, compressible or shifting soils are likely, the building official decides whether to require a soil test (2024 IRC R401.4).
- Exterior footings must sit at least 12 in. below undisturbed ground and below the frost line, or be otherwise frost-protected (IRC R403.1.4, R403.1.4.1).
- Helical pile systems are evaluated under ICC-ES acceptance criteria AC358. Their evaluation reports require records of installation torque and final depth, and say settlement must be determined by a registered design professional.
- The Foundation Performance Association's guideline FPA-SC-13-1 (2015) suggests about 1% tilt and L/360 deflection as limits for a slab foundation. Texas Section ASCE guidance notes a floor slope over 1% is usually noticeable.
Red flags and questions to ask
Foundation repair is mostly sold through free inspections by the company that installs the product, so the unit count is set by the seller.
Red flags
- Piers or anchors quoted with no engineer's report or elevation survey
- A "lifetime warranty" backed only by the installer, with no manufacturer or trust behind it
- Same-day signing discounts, or "the price goes up tomorrow"
- Financing pitched before the scope is settled
- Piers recommended when gutters, grading, a plumbing leak or clay moisture swings are the cause
- Lifting proposed for a house that only needs stabilizing
- Piers proposed for heave, which they cannot stop
- Crack injection sold on a crack that is still moving
Questions to ask
- What is causing the movement, and does your plan fix the cause or only the symptom?
- How many units, where (on a drawing), and why that count?
- Push or helical piers, and why for this soil?
- Is the per-pier price capped at a depth? What does extra depth cost?
- Will you stabilize only, or lift? What is the target, and what damage should I expect?
- For helical piers: is the product covered by an ICC-ES evaluation report (acceptance criteria AC358)?
- Who pulls the permit, and does an engineer sign off?
- Is the warranty transferable, and who honors it if your company closes?
Get it in writing
- A scope drawing with every unit located
- The product and model, the per-unit price and the depth it assumes
- Installation logs: depth of every pier, plus final hydraulic pressure (push piers) or final torque (helical)
- Lift amounts, if any
- Warranty terms and how it transfers when you sell
- Permit and inspection sign-off, and the engineer's letter after installation
Insurance and selling the house
Standard homeowners policies generally exclude settlement, earth movement, expansive soil, poor drainage and wear, so most foundation repair isn't covered. Damage from a covered event, such as a burst pipe or fire, may be. Whether a slow under-slab plumbing leak counts depends on the policy wording and the state: the Texas Department of Insurance said in 1997 that the old HO-B policy covered a foundation shift caused by a plumbing leak, but that applies to that form, not every current policy. Read the earth-movement and water exclusions and ask the insurer before assuming either way.
Most state seller disclosure forms ask about known structural defects and past repairs, so a completed repair generally has to be disclosed. Buyers will ask what caused the movement and whether the fix addressed it. An independent engineer's report, the permit sign-off, the installation logs and a transferable warranty backed by more than the installer are what make a disclosed repair read as resolved.
What you can do yourself
Reasonable DIY
- Monitoring cracks with marks, a gauge and dated photos
- Cleaning and extending gutters and downspouts
- Regrading soil so it slopes away from the house
- Keeping soil moisture steady on expansive clay; moving thirsty plantings away
- Sealing a confirmed cosmetic shrinkage crack
- A temporary screw jack under a crawl-space girder, only where an engineer says where and on what footing
Leave to a contractor
- Piers of any kind
- Wall anchors, tiebacks and steel braces
- Carbon-fiber wall systems
- Straightening a wall
- Lifting any part of the house
Forbes Home puts DIY repair of a minor crack at about $35–$575, with $200 typical. If regrading by hand isn't practical, a pro typically charges $500–$5,000 (HomeGuide).
What these ranges don't include
National ranges, materials + labor combined, for a typical single-family house. Structural work only: excludes waterproofing and drainage systems, mold remediation, plumbing repair, and cosmetic repair after the fix unless you add it.
- Waterproofing, leak repair, interior drain tile and sump pumps (see the basement waterproofing cost page)
- New foundations and additions (see the home addition cost page)
- Mold remediation
- Sewer, water-line and under-slab plumbing repair (get a plumber's leak test as a first step)
- Leveling historic timber-frame or stone foundations, which needs a preservation-experienced engineer
- Cosmetic repair after the fix (drywall, trim, doors, flooring)
See basement waterproofing cost and home addition cost.
Where these numbers come from
Unit prices reconcile Fixr, HomeGuide, This Old House, Forbes Home, Angi, HomeAdvisor and Today's Homeowner with published price sheets from Olshan, Ram Jack dealers and other repair contractors. Each project total is a unit count times the typical unit price, plus the engineer and permit where those normally apply. Where sources disagree by more than 40%, such as push-pier prices and whole-job totals for bowing walls, the national guides were used and the outliers are explained above. The estimator only adds costs that have a published range; factors without one are described in words instead of guessed at. Ranges are deliberately wide. The model is reviewed annually; this page was last computed from data updated .
Check what the code requires
Replacing a wall or footing? The free foundation wall calculator reads wall thickness and rebar from the IRC tables, and the footing size calculator sizes the footing under it. No signup.
Frequently Asked Questions
How much does foundation repair cost in 2026?
Most structural repairs fall between $1,500 and $22,500, and the number of piers, anchors or straps is the biggest driver. Stabilizing one settling corner with push piers runs $4,750 to $9,250; one full side of a house $11,500 to $22,500; a bowing basement wall with anchors $2,750 to $5,250; structural crack repair on one wall $1,500 to $3,000. National cost guides put the average foundation repair job near $5,200 (Fixr, This Old House, Forbes Home). Olshan, a national repair contractor, reports about $12,000; its jobs skew toward Texas slab piering and whole-house scopes.
How much does a foundation pier cost?
Steel push piers run about $1,000 – $3,000 each installed, and helical piers about $2,000 – $4,000 each. A settling corner usually takes 3–4 piers and one side of a house 8–10, spaced about 5–8 ft apart. A corner on helical piers runs $7,500 to $15,000. Per-pier prices usually assume a depth, so ask what extra depth costs.
Push piers or helical piers: which is better?
Neither is better everywhere. Push piers are driven down using the weight of the house as the reaction, so they suit heavier structures and cost less per pier ($1,000 – $3,000). Helical piers are screwed in to a target torque, so they work for lighter loads like porches, additions and decks, and cost more ($2,000 – $4,000). The soil and the load decide; ask the engineer or contractor why they chose one for your house.
How much does it cost to fix a bowing basement wall?
For a ~30 ft wall, wall anchors run $2,750 to $5,250 and carbon-fiber straps $4,000 to $8,000, including the engineer and permit. Straps suit walls bowed less than about 2 in.; anchors, steel braces or helical tiebacks handle more, and walls bowed past about 4–6 in. usually need straightening or rebuilding. Fixing the drainage that pushed the wall in matters as much as the bracing.
Is a crack in my foundation serious?
Usually not if it is a hairline vertical crack under ⅛ in. with level edges; that is normal concrete shrinkage. Call a structural engineer for any horizontal crack, a crack where one side is offset, one wider at one end, one that keeps growing, or one wider than about ¼ in. An engineer's report costs about $300 – $1,000 and has no stake in selling you piers.
How much does it cost to lift a sunken concrete slab?
For a ~250 sq ft garage or patio slab, mudjacking runs $1,000 to $1,900 (about $3 – $9 per sq ft) and polyurethane foam $2,000 to $4,000 (about $5 – $25 per sq ft). Small jobs hit a contractor minimum. Lifting a house slab is a much bigger job, often several thousand dollars or more. Lifting doesn't fix the soil or water problem that let the slab sink.
How much does it cost to fix a sagging floor over a crawl space?
Adding about four adjustable steel support posts and sistering six joists runs $4,000 to $8,000 with an engineer's report. Posts cost about $500 – $2,500 each and sistering about $150 – $1,000 per joist. If the crawl space is wet, fix the moisture too, or the new wood will rot like the old.
Does homeowners insurance cover foundation repair?
Usually not. Standard policies exclude settlement, earth movement, expansive soil, poor drainage and wear. Damage from a covered event, such as a burst pipe or fire, may be covered. Whether an under-slab plumbing leak qualifies depends on your policy and state, so read the earth-movement and water exclusions and ask your insurer.