Foundation Repair Cost
Foundation repair costs $4,500–$20,000 for structural problems — mudjacking an uneven slab runs $4,500–$9,000, bowing-wall repair $5,000–$15,000, and piering a sinking foundation $10,000–$20,000. Price your repair and see why the engineer comes first.
Foundation pricing follows the repair the damage calls for — releveling a slab, anchoring a bowing wall, or underpinning a sinking corner are different jobs at different money. The other thing that moves your number: whether you already hold a structural engineer's report — the document that decides which repair you actually need, from someone who doesn't profit from the answer.
What's the foundation doing?
Match the symptom: floors sloping toward one corner and doors that won't latch point to sinking (piers). A cracked, uneven slab or sunken garage floor is leveling territory (mudjacking). A basement wall curving inward is bowing. Stabilization stops further movement when the foundation hasn't failed yet.
Do you have a structural engineer's report?
The report ($500–$3,000) is what determines the right repair — and it should come from an independent engineer, not the repair company's free inspection, which is a sales document. If you don't have one yet, we include it.
Cost of piers and underpinning
$10,500–$23,000
structural repair plus the independent engineer's report that prescribes it
Get the engineer before the repair company
Foundation repair's classic trap: the repair company's free inspection is a sales document, and it reliably prescribes what the company sells. An independent structural engineer ($500–$3,000) tells you what the foundation actually needs — sometimes that's $15,000 of piers, and sometimes it's monitoring a stable crack for a year. On five-figure structural work, it's the best-value line on the whole bill.
Cheaper problems, and pricier ones
Isolated cracks without movement run $250–$800 per crack to inject and seal — a different, smaller project. At the other end: severe settlement can require house lifting ($10,000–$40,000) or full foundation replacement (up to $100,000), and chronic water problems need waterproofing ($6,000–$18,000) fixed alongside the structure — water is usually why foundations move in the first place.
Method-level national ranges: piering runs $10,000–$20,000 with pier count as the real driver (a three-pier corner sits near the floor; a full perimeter can exceed the band). Mudjacking runs $4–$9 per square foot within its range. Diagnostics beyond the engineer: foundation inspection $400–$750, soil testing $10–$500. Excludes waterproofing, drainage correction, and cosmetic repairs to finishes cracked by the movement.
💡About this calculator▼
No home problem generates more fear per crack than a foundation issue — and fear is exactly what parts of the repair industry price into their quotes. The antidote is knowing two things before anyone walks your basement: which repair your symptoms actually point to, and what that repair honestly costs.
The repairs have distinct price lanes. Mudjacking — pumping structural fill under a settled slab to float it level — runs $4,500–$9,000 and fixes the classic cracked, uneven garage or basement floor. Stabilization (braces and anchors that stop further movement) runs $5,000–$10,000. Bowing basement walls — the inward curve that soil pressure carves over decades — cost $5,000–$15,000 to anchor with wall plates, carbon-fiber straps, or helical tiebacks. And true sinking or settling, where a corner of the house drops and doors stop latching, gets piers driven to stable soil at $10,000–$20,000.
One line belongs in every one of those budgets: an independent structural engineer's report at $500–$3,000. Not the repair company's free inspection — a free inspection from someone selling piers has a way of finding pier problems. The engineer prescribes the repair; the contractors bid on the prescription. On five-figure structural work, no line item pays for itself faster.
And before assuming the worst: hairline cracks without movement are a $250–$800-per-crack injection job, not a structural project. Pick what your foundation is doing below, and get the honest range for fixing it.
The symptom picks the repair, the repair sets the band, and the engineer's report rides along until you have one.
Matching symptom to repair. Sloping floors, doors and windows that won't latch, stair-step cracks in brick — that's settlement, fixed by underpinning: steel push piers or screw-like helical piers driven down to load-bearing soil, then the foundation jacked back toward level ($10,000–$20,000, with pier count driving where you land). A cracked or sunken concrete slab with the house otherwise sound is a leveling problem — mudjacking injects fill at $4–$9 per square foot to float it back ($4,500–$9,000 typical). A basement wall curving inward is bowing, answered with wall anchors, carbon-fiber straps, or helical tiebacks ($5,000–$15,000 by severity). When the goal is stopping movement before failure, bracing and anchoring runs $5,000–$10,000.
Why the engineer is in the math. The report ($500–$3,000) determines which of those repairs — if any — the foundation needs, from someone with no stake in the answer. The calculator includes it unless you say you already have one, because buying structural repair without independent diagnosis is how monitoring-grade cracks become $15,000 pier jobs.
The extremes, for context. Foundations too far gone for repair enter house-lifting territory: $10,000–$40,000 to lift, $20,000–$100,000 to lift and replace the foundation entirely. If quotes are heading there, a second engineer's opinion is worth its weight.
📐How it's calculated▼
Total = structural repair + engineer's report (if you don't have one yet).
Repair bands by method: mudjacking / slab leveling $4,500–$9,000 (at $4–$9 per square foot of slab) · stabilization with braces or anchors $5,000–$10,000 · bowing-wall repair $5,000–$15,000 · underpinning / piering $10,000–$20,000.
Structural engineer's report: +$500–$3,000 when not already in hand.
Context from the same published data: foundation-type ranges tell the matching story — concrete slab repairs run $1,000–$10,000, crawlspace foundations $2,500–$8,000, pier-and-beam $2,000–$15,000, and major basement or block-wall repairs $2,500–$25,000. Simple crack injection ($250–$800 per crack), house lifting ($10,000–$40,000), and full foundation replacement (up to $100,000) sit outside this calculator's structural-repair scope, and the supporting diagnostics run $400–$750 for a foundation inspection and $10–$500 for soil testing.
🔍Finding your inputs▼
What's the foundation doing? Read the house's symptoms: doors that stopped latching, windows that stick, sloping floors, and stair-step cracks in exterior brick point to sinking — the piers lane. A garage or basement slab that's cracked and settled while the walls stay true is the mudjacking lane. A basement wall with a visible inward curve (hold a level against it) is bowing. If an engineer has told you the foundation is stable but at risk, stabilization is the preventive lane.
Do you have a structural engineer's report? If yes, the estimate is the repair alone — bring the report to two or three repair contractors and let them bid the same prescription; that's the entire negotiating trick of foundation work. If no, the estimate includes it, and getting it first is the strong recommendation: hire the engineer directly (not through a repair company), expect $500–$3,000 depending on complexity, and treat any repair quote written before independent diagnosis as marketing.
⚠️Special situations▼
I have cracks but no other symptoms — do I need any of this?
Maybe not. Hairline and stable cracks are usually shrinkage, not structure — injection runs $250–$800 per crack, and an engineer will often prescribe monitoring: mark the crack ends, date them, and watch for a season. The escalation signals are cracks that widen, stair-step through block or brick, appear alongside sticking doors, or admit water. Movement plus cracks is a structural conversation; cracks alone usually aren't.
The repair company quoted piers, but the house feels fine
This is the exact scenario the independent engineer exists for. Free inspections from pier companies find pier problems at a rate statistics can't explain, and $500–$3,000 for an unbiased answer is cheap against a $15,000 repair you might not need. If the engineer agrees piers are warranted, you've lost nothing — their report becomes the spec sheet three contractors bid against, which routinely saves more than the report cost.
My foundation problems came with a wet basement
Fix both, in the right order — water is usually why foundations move: it swells clay soils, erodes support, and pressures walls into bowing. A structural repair over an unsolved water problem gets to fail twice. Budget the drainage correction (grading, gutters, drains) and basement waterproofing ($6,000–$18,000) alongside the structural work, and be suspicious of any repair plan that doesn't mention where the water goes.
I'm buying or selling a house with known foundation repairs
Repaired-and-documented beats undiscovered every time. As a buyer: ask for the engineer's report, the repair invoices, and — critically — whether the warranty transfers; a transferable lifetime pier warranty from an established company largely neutralizes the issue. As a seller: disclose fully and lead with the paperwork. What kills deals isn't repaired foundations; it's surprise, and lenders share that opinion.
Quotes vary wildly — $6,000 from one company, $22,000 from another
Foundation repair's quote spread is legendary, and it usually means the companies are proposing different repairs, not different prices for the same one. This is the tell that you're missing the engineer's report: without a prescription, each bidder diagnoses (and up-sells) independently. Get the report, then require bids against its specific scope — pier count, locations, method. The spread collapses when everyone prices the same job.
❓Common questions▼
How much does foundation repair cost?
Structural foundation repairs run $4,500–$20,000: mudjacking a settled slab costs $4,500–$9,000, stabilization with braces or anchors $5,000–$10,000, bowing-wall repair $5,000–$15,000, and underpinning a sinking foundation with piers $10,000–$20,000. Add $500–$3,000 for the structural engineer report that should precede any of them. Simple crack injection is far cheaper at $250–$800 per crack.
What are the signs of foundation problems?
The house tells you in order of severity: doors and windows that stick or won't latch, cracks radiating from door and window corners, stair-step cracks in brick or block, sloping or bouncy floors, gaps between walls and ceilings or crown molding, and a basement wall with a visible inward bow. One symptom alone is often nothing; symptoms arriving together and worsening is when an engineer's assessment earns its fee.
How much do foundation piers cost?
Underpinning runs $10,000–$20,000 for a typical job, and pier count is the real variable — each steel push pier or helical pier is a four-figure item installed, so a dropped corner needing three piers sits near the bottom of the range while a full perimeter needing ten or more can exceed it. Insist that bids itemize count and per-pier price; it's the only way to compare piering quotes honestly.
Is foundation repair covered by homeowners insurance?
Usually not for the common causes — settling, soil movement, and poor drainage are classed as maintenance and excluded. Coverage typically exists only when a covered peril caused the damage: a plumbing leak washing out soil under the slab is the classic payable claim. If a leak is anywhere in your foundation story, document it thoroughly before repairs begin — causation is what gets foundation claims paid.
Is it safe to live in a house during foundation repair?
Almost always yes — piering, mudjacking, and wall anchoring are exterior-side or basement work, and crews don't need you out. Expect noise, vibration, and a few days of disruption (typical jobs run 2–5 days). The question worth asking instead: is it safe to wait? Foundations rarely fail suddenly, but they never improve on their own, and repair costs track the damage — this year's stabilization job is next decade's piering job.
Does foundation repair hurt resale value?
Less than an unrepaired problem does — and with the right paperwork, sometimes not at all. A professionally repaired foundation with an engineer's report and a transferable warranty reads as a solved problem; an undisclosed or unaddressed one reads as an unpriced risk, and buyers price risk brutally. Keep the report, invoices, and warranty documents together; they're part of the house now.
🔗 Related Calculators
Basement Crack Repair Cost
Price a basement or foundation crack repair by what the crack actually looks like — $250–$800 per crack for injection, or thousands if it's horizontal. Includes which material works on your crack and when it's structural.
Basement Waterproofing Cost
Estimate basement waterproofing costs by method — interior sealant, interior drainage with a sump pump, or exterior membrane — priced per linear foot of wall, with an honest guide to which fix matches your problem.
Crawl Space Encapsulation Cost
Estimate crawl space encapsulation cost by area, vapor-barrier thickness (6/12/20-mil), and add-ons — dehumidifier, insulation, drainage. See what a real encapsulation includes and why mold and standing-water fixes are separate prerequisites.
Mold Remediation Cost
Mold remediation costs $15–$30 per square foot — $500–$2,000 for a bathroom, $1,500–$6,000 for a partial attic or basement, and $15,000+ for whole-house contamination. Price your situation by location and spread.