Foundation services
Slab foundation repair: diagnose before piers
Slab foundation repair fixes a house sitting on a concrete slab that has settled, heaved or cracked.
Find a Foundation Professional What it costs
Written by HyreFoundation Research Desk Primary-source research and fact checking
The short answer
Slab foundation repair fixes a house sitting on a concrete slab that has settled, heaved or cracked. The right repair depends on the cause: soil drying or swelling, a plumbing leak under the slab, poor drainage, or weak fill. Piers are one answer among several, and a structural engineer should diagnose first.
If this is happening now
A new wide crack, floors that slope suddenly, or doors that jam overnight need a structural engineer promptly. If you smell gas near a cracked slab, leave the house and call the gas utility. You can also reach HyreFoundation on (866) 582-8523.
Key takeaways
and not structural.
and need opposite fixes.
can drive movement. Test before repair.
Signs a slab foundation is moving
How is a slab foundation repaired?
An elevation survey shows the shape of the slab.
Plumbing tests, drainage review and soil information.
Leaks, drainage and soil moisture.
Piers under the perimeter beam, slab leveling, or monitoring, as engineered. See foundation repair.
What moves the price
Diagnosis and the fix chosen set the price. We publish no price figures until we hold enough sourced, dated quotes; see what drives foundation costs.
| Factor | Why it changes the number |
|---|---|
| Engineering | Survey and report. |
| Plumbing tests | Leak testing under the slab. |
| Repair type | Piers, leveling, or drainage only. |
HyreFoundation publishes no national average price for this work. Depth to bearing, soil, access and method vary enough between two houses on the same street that a single figure would mislead.
Settlement or heave?
For settlement, piers can help. Heave from swelling clay needs moisture control; piers can make it worse. Whether a particular wall, slab, beam or pier is safe is a question for a licensed structural engineer who has seen it, not for this page or for a sales visit.
What to ask before you sign
The full checklist is on choosing a foundation contractor.
Where this goes wrong
Wrong diagnosis, wrong fix.
A leak can keep moving the slab.
Most hairline slab cracks are shrinkage.
Get connected
Tell us about the work
Three short steps: the job, your home, and how to reach you. Nothing goes to a foundation company unless you agree.
A straight answer first. A person reads it and replies by email, free and with no obligation. Matching is not live yet, so this is not a quote. If a wall is moving or a door frame has racked out of square this week, call a structural engineer first.
Find a Foundation Professional
A person at HyreFoundation reads the request and replies. Matching is not live yet, so this is not a quote.
Questions
Can a slab foundation be fixed?
Are slab cracks normal?
Do I need an engineer for slab repair?
Will insurance cover slab repair?
Written and audited by
HyreFoundation Research Desk
Primary-source research and fact checking
We read the model building code, the federal soil and moisture guidance and the insurer position ourselves, and we publish each figure with the document it came from and the date we retrieved it.
Where a number cannot be traced to a primary source, we say so instead of printing it. HyreFoundation does not inspect, engineer or repair foundations. Authorship is organizational: this desk, not a named persona.
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- pages published on this site
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- free tools, each showing its assumptions
- 0
- foundation repairs we perform or sell
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- paid placements or rankings
How this desk works
- Primary sources only. Code statements come from the International Residential Code, Chapter 4, as the model code. Soil statements come from USDA and USGS. Insurance statements come from the policy language and the Insurance Information Institute. We open the source rather than cite a blog that cites it.
- The code is a model, and adoption is local. Your jurisdiction adopts an edition and amends it, and foundation chapters are amended more than most because frost depth and soil are local facts. Every code figure says so.
- We hold no job data. We have no dataset of bids, pier counts or invoices, so no page claims an average from one. Calculators show the arithmetic and the inputs they assumed, and label the result as an estimate.
- We do not diagnose your house. A crack guide can tell you which pattern to measure and when to call a structural engineer. It cannot tell you whether your foundation is failing. An engineer on site does that work.
- We do not repair foundations, and we take no payment for placement, ranking or a favorable mention. Nobody buys a position on this site.
Authorship on this site is organizational: the analysis belongs to the desk rather than to a named individual, and we do not publish credentials we do not hold. Our editorial policy sets out how we source, date and correct what we publish.
Sources & retrieval dates
Information on this page is general and varies with soil, climate, foundation type, building code, insurance policy and circumstance.
It is not engineering, insurance or legal advice, and no page can tell you whether your house has a structural problem: that needs a licensed professional on site.
HyreFoundation is an independent foundation resource, not a repair contractor or an engineering firm, and does not perform, supervise or warrant foundation work.