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Slab Foundation Repair Cost (2026)

6 min readUpdated June 2026By Ricardo Chamorro · ICC-certified Residential Building Contractor

SLAB REPAIR SCOPES & TYPICAL 2026 RANGES (NOT QUOTES)

Settled corner (4–6 piers)$2,500–$6,000The most common slab job, method depending
Full side (8–12 piers)$5,000–$12,000Deep-clay seasonal movement along one elevation
Severe multi-side movement$10,000–$35,000The exception · usually after years of deferral
Per pier (by method)$600–$1,000 / pierConcrete lowest, steel highest, hybrid between
Interior piers / tunneling accessadds labor / pierTunneling avoids tearing up finished floors
Plumbing test & drainage extrasa few hundred–low thousandsRule out an under-slab leak; fix grading so it lasts
Slab repair is priced by the piers that make the fix permanent. Count × type, adjusted for access. Everything else is a line you can see.

Slab foundation repair cost in 2026 runs from about $2,500 for a settled corner to $35,000 for full-perimeter work, set almost entirely by pier count. Most San Antonio and Central Texas homes built since the 1950s sit on a slab, and when the clay under one edge dries out and drops, the fix is slab foundation repair: piers under the settled edge, then a staged lift. Our foundation repair cost guide covers the universal math; this is the slab-specific layer, with 2026 ranges. This page is slab pricing only. If your home is an older crawlspace house, the numbers are different and cheaper. See pier and beam foundation repair cost instead.

Exterior slab-edge crack and separation documented during a foundation inspection
The symptom that starts most slab-repair quotes: a cracked, separated slab edge where the clay dried out.

What slab foundation repair actually costs

A slab quote is three numbers multiplied together: how many piers, what type, and how hard the access is. Pier count comes from the elevation survey, affected footage ÷ 6, plus corner logic. Pier type sets the per-pier price: concrete-and-rebar at the value end, steel driven to refusal at the premium end, hybrid in between. Access is everything around the work line: rocky digging, mature trees, decks and pools, and whether interior piers need tunneling under the slab or breaking through finished floors.

Pier hole excavated at the base of a wall to access the slab grade beam for repair
Each excavated pier location is a unit of cost. The count comes from the elevation map.

Tunneling vs. interior breakout

When a settled area sits in the middle of the house rather than at the perimeter, the piers underneath it can be reached two ways. Tunneling (digging in from outside, under the slab) costs more in labor but leaves your floors untouched. Interior breakout (cutting through the slab and finished flooring inside) is cheaper to access but means repairing floors afterward. Neither is universally “better”; the right call depends on your finishes and the pier locations, and the quote should show you the trade.

Compare bids pier-for-pier. Two quotes for “foundation repair” mean nothing side by side; two quotes that each say how many piers, what type, and where can be compared in minutes against the same elevation map. If a bid hides the pier plan or leans on an expiring discount, treat it as an exit, or get a free second opinion.
Square pier pit dug at a slab foundation edge with broken concrete removed
Broken concrete and tight access push per-pier pricing toward the high end of the range.

What makes a slab repair cheaper or more expensive

  • Catching it early: the biggest lever you control. A two-pier corner today beats a ten-pier side after three more droughts.
  • Access: open perimeters and easy digging sit at the cheap end; tight side yards, river-rock beds, broken concrete, and utility lines add labor hours.
  • Method: concrete piers cost less per unit than steel; the soil and structure decide which is appropriate, not the budget alone.
  • The extras: a hydrostatic plumbing test when a leak is suspected, a drainage correction so the soil stops swinging, an engineer letter when a sale needs one, each itemized.
Concrete pier cap set in an excavated pit beneath a slab grade beam
A pier capped beneath the grade beam, the per-pier unit behind every slab quote.

Getting your real number

The free inspection produces it the same day for most homes: an elevation map, a marked pier plan, a per-pier price, and a firm total. No phone estimates pretending to be quotes. The measurement comes first and the price follows from it. The calculator gives you a defensible starting figure tonight, before anyone visits.

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Cracked slab edge, sloping floors, or a quote that feels high? Free elevation survey and a firm per-pier number, usually same visit.Get My Slab Repair Number

Straight answers

Related questions.

Pier count drives it. A settled corner (the most common slab job) needs 4–6 piers and runs about $2,500–$6,000 depending on method and access. A full side (8–12 piers) runs $5,000–$12,000, and severe multi-side movement can reach $35,000, though that's the exception, usually after years of deferral. The free elevation survey turns these ranges into a firm per-pier number for your house.
Roughly $600–$1,000 per pier installed, depending on method and access. Concrete-and-rebar piers sit at the lower end, steel piers driven to refusal at the higher end, and hybrid piers in between. Tough access (tunneling under the slab, breaking through interior concrete, or rocky digging) adds labor per pier. The pier count comes from the elevation survey, not a guess.
Because the price is pier count × pier type, adjusted for access, and the pier count comes from a measured floor elevation survey. A number given before anyone measures your floor is a guess dressed up as a quote. We give a ballpark range on the phone gladly, but the firm number comes from the free on-site inspection.
Only when they're needed, and itemized when they are. A hydrostatic plumbing test (a few hundred dollars) is worth it when the symptom pattern suggests a leak under the slab. Sometimes fixing the leak is the whole repair. An engineer's letter is added when a buyer, lender, or city requires one. Neither is hidden in the per-pier price.

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