2026 Foundation Repair Cost Index, by Method
Updated 2026-07-02
Foundation repair in 2026 costs $250 to $25,000 or more, and the method matters far more than the house. Crack injection is the cheapest fix at $500 to $2,500. Slab jacking runs $600 to $2,000. A full pier underpinning project lands at $8,000 to $25,000. Waterproofing and drainage work spans $3,000 to $15,000 depending on scope. This index lines up our own guide pricing against two independent 2026 surveys, Angi and This Old House, so you can see where the numbers agree and where they diverge.
Summary table: cost by repair method
| Repair method | This site (2026) | Angi, updated Mar 17, 2026 | This Old House, updated Mar 6, 2026 |
|---|---|---|---|
| Crack repair (epoxy/polyurethane injection) | $500 to $2,500 | $250 to $800 | $200 to $800 (hairline) |
| Slab jacking / mudjacking | $600 to $2,000 | $500 to $1,300 | $550 to $1,300 |
| Piering / underpinning (per pier) | $1,000 to $3,500 | $1,000 to $3,000 | $1,000 to $3,000 |
| Waterproofing / drainage correction | $3,000 to $15,000 | $800 to $15,000 | $2,300 to $7,300 |
A downloadable CSV of this table is available, including the exact source notes behind each figure.
Why the ranges do not match exactly
Crack repair shows the widest spread because the category hides two very different jobs. This site's $500 to $2,500 range covers everything from a hairline pour crack to a wider structural crack needing hydraulic cement, which is why it runs higher than Angi's $250 to $800 hairline-only figure. This Old House splits the difference explicitly, listing $200 to $800 for hairline cracks and $10,000 to $15,000 or more once a crack requires carbon fiber reinforcement or wall anchors, a separate line item this index tracks under waterproofing and structural bracing rather than crack repair.
Piering is the one method where all three sources land close together, $1,000 to $3,000 or $3,500 per pier installed. A typical home needs 6 to 12 piers, which is how a per-pier price of roughly $1,500 turns into a total project cost of $8,000 to $25,000, the figure on this site's own pier repair guide.
Waterproofing is the least standardized category in the industry. Angi's $800 to $15,000 range spans a single interior crack seal at the low end and a full exterior excavation and membrane system at the high end. This Old House's $2,300 to $7,300 figure appears to describe a mid-scope drainage correction rather than the full range of possible jobs, which is why it sits inside the wider Angi and site figures rather than matching either endpoint.
Methodology: where these numbers come from
The "This site" column is drawn from figures already published on this site's own cost guides: the crack repair guide, the slab vs basement comparison, and the pier repair guide, all last updated 2026-07-02. Those figures are also reflected in the constants behind the home page calculator, which prices a typical settling repair at a base of $3,000 to $8,000 before applying multipliers for problem severity (0.35x for minor cracks up to 2.4x for major structural damage), repair method (0.5x for crack sealing up to 1.2x for wall anchors), home size, and a ZIP-code cost-of-living adjustment.
The two independent columns come from national cost guides published by Angi, "How Much Does Foundation Repair Cost?" (updated March 17, 2026), and This Old House, "How Much Does Foundation Repair Cost?" (updated March 6, 2026). Both report a national average total repair cost near $5,180 (Angi: $5,176, range $2,225 to $8,135; This Old House: $5,179, range $2,224 to $8,134), which is consistent with this site's own settling-repair baseline once average ZIP pricing and mid-severity damage are applied.
We did not use HomeAdvisor separately in this index because its foundation repair page is Angi-owned and shares Angi's underlying pricing data as of 2026.
Cite this page
Foundation Repair Cost, "2026 Foundation Repair Cost Index, by Method," 2026, https://foundationrepaircost.net/foundation-repair-cost-index-2026/