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Pricing · Updated Nov 5, 2026

Foundation repair cost in San Antonio: the 2026 guide

Victorian mansion with a turret in the King William Historic District, San Antonio
A Victorian mansion in the King William Historic District, San Antonio. Photo: Carol M. Highsmith, Public domain.

Short answer: nationally, most homeowners pay $2,225–$8,133 for foundation repair, and the 2026 average is $5,175 (Angi). Pier jobs, the most common major fix on San Antonio clay, run about $1,000–$3,000 per pier. Here's what moves your number up or down.

2026 cost ranges at a glance

RepairTypical 2026 rangeSource
Foundation repair, typical$2,225–$8,133 (avg $5,175)Angi
Piering or underpinning, per pier$1,000–$3,000Angi
Concrete slab repairs$350–$20,000Angi
Pier and beam repairs$750–$25,000Angi
Pier and beam, typical$6,000–$14,000 (avg $10,000)Angi
Home settling repairs$5,000–$25,000Angi
Foundation crack repair$250–$800Angi
Mudjacking / slab-jacking$500–$1,300Angi
Drainage system$2,800–$6,500Angi
Soil report$500–$3,000Angi

For comparison, Angi lists Houston, the closest Texas city in its table, at $3,300–$6,800 (Angi). It does not publish a San Antonio figure.

Why San Antonio foundations move

Most Bexar County soil is thick Blackland Prairie clay (Houston Black Clay) that expands when wet and shrinks when dry, and that shrink-swell is the primary reason for foundation issues in the county (Texas Master Naturalist). Texas regulators describe the same pattern: high moisture causes heave, low moisture causes settlement (TDLR).

5 things that set your price

  1. Number of piers. The biggest single driver. Try scenarios in the cost calculator.
  2. Pier type. Angi lists average costs of about $1,000 (segmented concrete), $2,000 (steel) and $3,000 (helical) per pier. See steel vs concrete piers.
  3. Foundation type. Slab vs pier and beam changes the whole approach. See pier and beam vs slab.
  4. Access. Interior piers, patios and landscaping add labor.
  5. The cause. If drainage or a plumbing leak is driving movement, fixing that is part of the job.

How to save without cutting corners

  • Get the cause diagnosed before you compare prices.
  • Compare quotes on pier count, depth and warranty, not just the total. Use our contractor checklist.
  • Ask whether drainage fixes can reduce the scope.
  • Ask about payment plans; Angi notes some contractors offer them.

Want a real number for your home?

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Frequently asked questions

How much does foundation repair cost in San Antonio?

No public source publishes a reliable San Antonio-only average. Nationally, Angi's 2026 data shows an average of $5,175, with most homeowners paying $2,225–$8,133. Pier jobs scale with the number of piers at about $1,000–$3,000 each.

Why do quotes vary so much?

Different causes call for different fixes. Pier count, pier type and depth, access, drainage work, and permits all change the total.

Is the inspection really free?

Yes. The match costs you nothing, and the contractors in our network offer a free inspection. Contractors pay us a referral fee.

Keep reading

Sources cited on this page: Angi, How Much Does Foundation Repair Cost? (updated Oct 26, 2026); Angi, How Much Does Pier and Beam Foundation Repair Cost? (updated Sep 18, 2026); Texas Master Naturalist, Alamo Area Chapter: Bexar County Soils; Texas Dept. of Licensing & Regulation, Technical Bulletin IHB TB 10-01 (Foundations on Expansive Soils). Cost figures are national, not San Antonio quotes.

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