Austin, TX · Travis, Williamson counties · USDA soil survey 2026-08-28
Foundation repair in Austin, TX: what the soil says, what it should cost
44% of the mapped ground in Travis, Williamson counties is high or very high shrink-swell soil (USDA soil survey; acre-weighted LEP 6.92%, class high). Published national ranges put a typical repair at $2,224–$8,134, piers at $1,000–$3,000 each. Check the soil under your own address below; then read what an independent engineer costs before you sign.
- 44% high or very high shrink-swell
- 183 map units with data
- Every price cited
- No contractor rankings
How much does foundation repair cost in Austin?
We do not have Austin-specific price data and won't invent an “average for Austin.” What published national guides report, with the figures the guides themselves publish:
- Typical job: $2,224–$8,134, average $5,179. Source: This Old House — Foundation Repair Cost, updated 2026-03-06
- Piering / underpinning: $1,000–$3,000 per pier. Source: This Old House — Foundation Repair Cost, updated 2026-03-06
The pier count and depth move a Austin number, and they depend on the soil under that specific house and how far down stable material sits. On high shrink-swell soil, quotes for the same house commonly differ on pier count alone; an engineer's report is what pins it.
| Repair | Published range | Source |
|---|---|---|
| Crack repair (epoxy / polyurethane injection) | $250–$800 per crack | Bob Vila — How Much Does Foundation Repair Cost?, updated 2024-05-29 |
| Mudjacking / slabjacking | $500–$1,300 per job | Bob Vila — How Much Does Foundation Repair Cost?, updated 2024-05-29 |
| Piering / underpinning | $1,000–$3,000 per pier | This Old House — Foundation Repair Cost, updated 2026-03-06 |
| Drainage system | $2,800–$6,500 per job | Bob Vila — How Much Does Foundation Repair Cost?, updated 2024-05-29 |
| Settling / sinking repair (all methods) | $4,500–$20,000 per job | Bob Vila — How Much Does Foundation Repair Cost?, updated 2024-05-29 |
Holding a Austin quote? Read it against the Travis, Williamson counties soil record before you sign.
What the soil under Travis, Williamson counties does
Source: USDA NRCS SSURGO, county legends TX453, TX491, top 152 cm, weighted by mapped acreage. Coverage: 97% of mapped acres carry usable data across 183 map units. Built 2026-08-28.
- very high32%
- high12%
- moderate44%
- low12%
The largest mapped unit in Travis, Williamson counties is Brackett-Rock outcrop complex, 1 to 12 percent slopes (8% of surveyed acres, moderate, LEP 3.1%, well drained); next is Houston Black clay, 1 to 3 percent slopes at 5%, very high with LEP 12%.
Where the expansive soil is: largest map units in Travis, Williamson counties
The hyper-local view: Austin neighborhoods sit on different ground, and the address lookup tells you which unit is under a given house.
| Map unit | Share of surveyed acres | LEP | Class | Drainage |
|---|---|---|---|---|
| Brackett-Rock outcrop complex, 1 to 12 percent slopes | 8% | 3.1% | moderate | Well drained |
| Houston Black clay, 1 to 3 percent slopes | 5% | 12% | very high | Moderately well drained |
| Brackett-Rock outcrop-Real complex, 8 to 30 percent slopes | 4% | 1.94% | low | Well drained |
| Eckrant cobbly clay, 1 to 8 percent slopes | 4% | 5.67% | moderate | Well drained |
| Eckrant stony clay, 0 to 3 percent slopes, stony | 4% | 4.46% | moderate | Well drained |
| Houston Black clay, 1 to 3 percent slopes | 3% | 12% | very high | Moderately well drained |
| Branyon clay, 1 to 3 percent slopes | 3% | 12.37% | very high | Moderately well drained |
| Branyon clay, 0 to 1 percent slopes | 3% | 12.37% | very high | Moderately well drained |
| Eckrant very stony clay, 5 to 18 percent slopes | 3% | 3.95% | moderate | Well drained |
| Doss silty clay, moist, 1 to 5 percent slopes | 3% | 4.93% | moderate | Well drained |
By county
| County | Coverage | LEP (acre-wt) | High + very high | Drainage |
|---|---|---|---|---|
| Travis | 96% | 6.44% | 36% | Well drained |
| Williamson | 99% | 7.35% | 51% | Well drained |
Check the soil under an address
USDA soil survey, read for the top 60 inches under the address. Free, no account, nothing is sent to a contractor.
Usually 1–3 seconds. The USDA service occasionally takes longer.
Is it worth fixing? Do you actually need this?
Soil in this class swells and shrinks noticeably with moisture. Movement is common; whether your house needs structural work is a question for an engineer, not a salesperson.
- An independent engineer's report costs a few hundred dollars and tells you whether the movement is active and what, if anything, to do.
- Drainage, grading and consistent watering around the slab are the first, cheapest interventions on this soil.
- If piers are recommended, ask for the pier count in writing and compare it to the engineer's.
We are not engineers and this is not an engineering opinion. We report public soil-survey data and published price ranges. Nothing here states that a specific house is or is not structurally sound; a licensed structural engineer who has seen the house can.
Does homeowners insurance cover foundation repair in Texas?
Usually no. Standard homeowners policies exclude earth movement (settling, shrinking, expanding and cracking of the foundation), so damage from expansive soil is not covered. Damage that results from a covered sudden event, such as a burst pipe flooding under a slab, can be, and separate earthquake or flood policies cover those perils.
Full answer for Texas → Source: HO-3 Special Form policy text (exclusion: "settling, shrinking, bulging or expansion, including resultant cracking, of pavements, patios, foundations, walls, floors, roofs or ceilings"), as filed with the Oklahoma Insurance Department
Finding a structural engineer in Austin for an independent opinion
A contractor's free inspection produces a bid. A licensed structural engineer who does not sell repairs produces the scope that bid should be written to: whether movement is active, what is causing it, and the pier count and depth if any. Published cost: $300–$1,000. Source: Bob Vila — How Much Does Foundation Repair Cost?, updated 2024-05-29
People in Austin search for a structural engineer about 390 times a month, more than they search for a “foundation inspection” (140). Verify a license with the Texas board; what the report should contain →
Foundation repair types people in Austin search for
Monthly Google searches for each phrase with “Austin” attached (Google Ads, pulled 2026-08-28). Each links to the cited cost range and when that repair is the right one.
- Slab foundation repair in Austin, about 40/mo: piers under the slab edge or interior, priced per pier; the count is the whole argument.
- House leveling in Austin, about 20/mo: a sales word, not a method. It means either piers or slabjacking, which are priced very differently; ask which.
- Pier and beam foundation repair in Austin, about 10/mo: shimming or replacing interior piers and sills; usually cheaper than slab piering, and the first thing to rule out on an older house with sloping floors.
- Basement waterproofing in Austin, about 10/mo: gutters, downspouts and grading before any system; interior drain and sump on slowly drained soil.
Finding and comparing foundation repair companies in Austin
Google shows a map pack of 3 contractors for “foundation repair Austin”; we don't rank them and don't take money to list them. A good bid and an aggressive one differ in scope, not in company name, so get the engineer's scope first and have every Austin company bid to it. On expansive clay, a bid with no moisture plan is treating half the problem. What a comparable quote itemizes →
Austin foundation repair: questions people ask
How much does foundation repair cost in Austin?
We don't have Austin-specific price data. Published national figures put a typical job at $2,224–$8,134 (average $5,179); piers run $1,000–$3,000 each, and the pier count is what moves a Austin quote.
Does homeowners insurance cover foundation repair in Texas?
Usually no. Standard homeowners policies exclude earth movement (settling, shrinking, expanding and cracking of the foundation), so damage from expansive soil is not covered. Damage that results from a covered sudden event, such as a burst pipe flooding under a slab, can be, and separate earthquake or flood policies cover those perils.
Is it worth fixing foundation issues? Do I actually need this?
Soil in this class swells and shrinks noticeably with moisture. Movement is common; whether your house needs structural work is a question for an engineer, not a salesperson.
How do I compare foundation repair companies in Austin?
Get an independent engineer's report first, then have every company bid to that scope: same pier type, count and depth. Compare the warranty terms (transferable? covers the house or only the pier?) and the moisture plan, not the sales pitch. We don't rank contractors.
Where do I get an independent opinion in Austin?
A licensed structural engineer who is not selling the repair. A report costs about $300–$1,000 and specifies whether movement is active and what work, if any, is warranted.
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