How much does foundation repair cost?

At a glance

Typical repair, total: $2,225–$8,133; Angi, October 2026
Crack injection, per crack: $250–$800; HomeGuide and Angi
Steel push pier, per pier: $1,000–$3,000; HomeGuide, Angi, Ram Jack

A city or ZIP code and a phone number are enough.

A typical foundation repair in the U.S. costs $2,225–$8,133, about $5,175 on average, according to Angi (updated October 2026). Fixr gives a similar $2,200–$8,200. A full underpinning job with about 10 piers is a different scale, at $10,000–$30,000. So what you pay depends mostly on which repair your house needs and, for piers, how many.

How foundation repair pricing is structured

Foundation work is priced in two ways. Some rows in the table below are per unit: per crack for injection, per pier for steel push piers and helical piers. Others are whole jobs: the typical repair total, full underpinning, a drainage system.

The overall range above the table runs from a few hundred dollars to tens of thousands. That is because it spans all of these at once. What matters for your house is which row your problem falls into and, for piers, the count. The figures come from national cost guides. Ram Jack, a pier maker headquartered in Ada, Oklahoma, also publishes national averages rather than state ones.

What drives the price up or down

The method. Sealing a non-structural crack by injection costs $250–$800 per crack. Lifting a settled section with piers is priced per pier, then multiplied by the number of piers. Angi’s per-pier estimates are about $1,000 for concrete, $2,000 for steel push piers and $3,000 for helical piers.

The number and depth of piers. Angi says around 10 piers is typical for underpinning a home. HomeGuide adds that helical piers driven deeper than planned cost about $20–$25 or more per extra foot.

The problem itself. Angi prices repairs by problem type: cracks $250–$800, leaks $2,000–$7,000, bowing walls $4,000–$12,000, and home settling $5,000–$25,000.

Slab or pier and beam. On pier-and-beam homes, HomeGuide gives $1,000–$1,600 per steel pier when rotted wood piers are replaced. Its inspection prices also differ by foundation type.

How a sunken slab is lifted. Slab jacking is priced per square foot rather than per job, so it is not a table row. HomeGuide gives $4–$9 per square foot for mudjacking and $8–$25 per square foot for polyurethane foam lifting. Minimums are around $300–$700 for mudjacking and $300–$700 or more for foam. Compare the area to be lifted as well as the price per square foot.

Repair company assessment or engineer’s inspection

For most homes the first step is a repair company’s assessment. Ask it to identify the movement, explain its proposed repair and give you a written quote to compare. When you schedule the visit, ask what it includes and whether any charge for it is credited against the job.

An independent structural engineer is worth paying for in these cases:

a complex or disputed case;
two companies proposing very different repairs;
a lender, buyer or insurer that wants a report.

HomeGuide (February 2026) puts a structural engineer’s foundation inspection at $300–$750, about $550 on average. It gives $300–$600 for a slab and $500–$1,000 for pier and beam, with hourly rates of $100–$220. Angi lists $300–$1,000 for a written structural report, and Fixr lists $300–$2,000 for a structural engineer. So ask whether the price covers a visit, a written report or both. If the engineer suspects the soil, Angi puts a geotechnical soil report at $500–$3,000.

City rules can affect the paperwork too. Tulsa’s residential guide says construction plans are required when damage is extensive or structural. Its plans examiner decides that. A company that already works under local rules can tell you whether your job is likely to need plans. It can also include them in the quote.

Common extras to check in your quote

The “Often extra” list under the table names the city permit and repairs to landscaping, drywall and trim once the foundation is stable. Two items deserve a line of their own:

The permit fee. National guides (Angi, HomeGuide, Fixr) commonly cite $75–$150. Angi gives $200–$1,000 for underpinning permits, and HomeGuide’s helical pier page gives $600–$3,600. Ask the company to name the permit it will pull and put the fee in the quote.
Drainage. If water around the house is part of the cause, Angi puts a drainage system at $2,800–$6,500.

How to compare foundation repair quotes

The diagnosis. Check that each company describes the same cause and the same affected area. If they disagree, that is the point to bring in an independent structural engineer.
Pier count, type and price per pier. Ask for each separately. Also ask for the planned depth and the charge if piers must go deeper.
Drainage and exclusions. See whether drainage work is included or left to you. Check what is excluded, such as drywall, trim and landscaping.
Licensing. The Oklahoma Construction Industries Board does not license foundation repair, and general contractors do not need a state license. So ask each company whether it is registered in your city.

Use the quote form to ask a local company to schedule a visit and price its proposed repair in writing. To make it comparable with other quotes, ask for these as separate lines:

the cause;
the method;
the pier count or square footage;
the drainage work;
the permit fee.

Foundation repair prices (U.S. cost guides)

The overall range is $250–$30,000.

Foundation repair prices (U.S. cost guides)
Option	Low estimate	High estimate	Notes
Typical foundation repair, total	$2,225	$8,133	Angi (updated October 2026); Fixr gives a similar $2,200–$8,200.
Crack injection, per crack	$250	$800	HomeGuide (2025) and Angi.
Steel push pier, per pier	$1,000	$3,000	HomeGuide, Angi and Ram Jack cost pages.
Helical pier, per pier	$2,000	$4,000	HomeGuide (February 2026), Ram Jack; Angi about $3,000.
Underpinning, whole job (about 10 piers)	$10,000	$30,000	Angi (July 2026) and HomeGuide.
Drainage system	$2,800	$6,500	Angi (October 2026).
Structural engineer foundation inspection	$300	$750	HomeGuide (February 2026); Angi lists $300–$1,000 for a structural report.

Usually included

National averages from Angi, HomeGuide, Fixr and Ram Jack

Often extra

City building permit, if your city requires one for the work
Landscaping, interior drywall and trim repair after the foundation is stabilized

Questions to ask a repair company

For a major repair, or if the problem is unclear, will a licensed engineer review the plan?
Engineering guidelines describe an engineer's evaluation as the way to tell cosmetic cracks from structural damage. ASCE Texas Section guidelines (2022)
What is causing the movement, and what will be done about the water?
On shrink–swell clay, keeping soil moisture even around and under the foundation is the main way to reduce movement, so drainage and leaks matter as much as the repair. ASCE Geo-Institute, Living With Shrink/Swell Soils (2022)
Will the plumbing be tested after lifting, and who pays if a leak is found?
Engineering guidelines call for leak tests of water and sewer lines after a foundation is lifted. ASCE Texas Section guidelines (2022)
Will you measure floor levels before and after the repair?
Engineering guidelines call for an elevation survey after the work, which gives you a before-and-after record. ASCE Texas Section guidelines (2022)
Is the warranty in writing, what does it exclude, and does it transfer if I sell the house?
The FTC notes that a warranty won't necessarily cover all situations or repairs and advises getting spoken promises in writing. FTC, Warranties
Does this job need a city permit, and who will get it?
Oklahoma's Construction Industries Board tells homeowners to check whether a permit is needed and to see it before work begins. Oklahoma CIB, Home Repair Tips
Can I get three written estimates for the same plan?
Oklahoma's Construction Industries Board and Emergency Management recommend at least three estimates based on the same specifications. Oklahoma CIB, Home Repair Tips

Frequently asked questions

Is lifting a sunken slab cheaper than piers?

Compare the proposed work as well as the total: slab lifting is priced by area, while piers are priced individually. HomeGuide gives $4–$9 per square foot for mudjacking and $8–$25 for foam, with minimum jobs around $300–$700 for mudjacking and $300–$700 or more for foam. Each steel push pier, by comparison, is $1,000–$3,000. HomeGuide's 1,500-square-foot foundation examples are $6,000–$13,500 with mudjacking and $12,000–$37,500 with foam. Ask the assessor which problem the proposed method would address.

How much does a structural engineer charge to look at a foundation?

HomeGuide (February 2026) puts a structural engineer's foundation inspection at $300–$750, about $550 on average. It gives $300–$600 for a slab and $500–$1,000 for a pier-and-beam house. Angi lists $300–$1,000 for a written structural report.

Why do pier prices look so different from whole-job prices?

Piers are priced one at a time, and the total depends on how many the job needs. Angi says the average underpinning job uses around 10 piers. That is how $1,000–$3,000 per steel push pier turns into $10,000–$30,000 for the whole job.

Does foundation repair need a city permit in Oklahoma?

It depends on the city and the scope. Moore requires building permits for most residential remodels and improvements. Tulsa's guide says repair permits are applied for in person. It also says construction plans are required if damage is extensive or structural, as decided by the plans examiner. Ask the company to confirm the permit it will pull and to put the fee in the written quote.

Does a foundation repair company need a state license in Oklahoma?

No. The Oklahoma Construction Industries Board does not license foundation repair, and general contractors do not need a state license. Ask the company which local licensing or registration rules apply and whether it meets them.