Foundation Crack Repair Cost
Typical price ranges for sealing and repairing foundation cracks, and how to make sure you only pay for the repair you actually need.
Typical ranges (US, 2026): DIY injection kit about $50–$150. Professional injection of a single crack about $250–$900, with many guides citing an average around $500–$600. An engineer's evaluation usually costs a few hundred dollars. Structural wall repairs typically run into the thousands. Prices vary widely by region, access and crack length, so get at least two or three written quotes.
Cost by repair type
| Repair | Typical cost | Used for |
|---|---|---|
| DIY injection kit | $50–$150 per kit (~10 ft of crack) | Single non-structural leaking crack |
| Professional polyurethane injection | ~$250–$800 per crack | Leaking non-structural cracks |
| Professional epoxy injection | ~$400–$900+ per crack | Structural bonding of dry cracks |
| Structural engineer evaluation | Typically a few hundred dollars, more for detailed reports | Diagnosing serious or uncertain cracks |
| Carbon fiber wall straps | Often low thousands for a typical wall | Stabilizing walls with modest bowing |
| Wall anchors or braces | Often several thousand dollars per wall | Walls that need holding or straightening |
| Underpinning or piers | Varies widely, often the largest foundation expense | Settlement that needs the foundation supported |
One contractor comparison for a 40-foot basement wall put wall anchors at about $7,000 and carbon fiber straps at about $3,000. Treat single examples like this as a sense of scale, not a quote.
What drives the price
- Crack length and width: more length means more ports and more resin
- Access: finished basements may need drywall removed and replaced
- Wet vs. dry: actively leaking cracks may need polyurethane and extra labor
- Structural vs. cosmetic: stabilizing a wall costs far more than sealing a crack
- Warranty: transferable lifetime warranties are often priced in
- Region: labor rates vary widely
How to avoid overpaying
- Get an independent engineer's report for anything structural. It costs a few hundred dollars and can save thousands. Repair companies that offer "free inspections" also sell the repair.
- Get two or three written, itemized quotes based on the same scope: the number of cracks, linear feet, the number of straps or anchors, and the warranty.
- Ask what's causing it, and whether drainage fixes such as gutters, downspouts and grading are included or needed.
- Check the warranty: what it covers, whether it transfers to a buyer, and who honors it if the company closes.
- Be wary of pressure tactics, like "today-only" pricing or claims that your house is unsafe without evidence.
Is DIY worth it?
For a single, dry or leaking vertical crack under 1/8" that isn't growing, a DIY kit is very cost-effective. For anything structural, DIY sealing can hide movement and make a later diagnosis harder. See our DIY repair steps, and when in doubt, start with the Crack Checker.
Price ranges are compiled from published US contractor and cost-guide figures as of November 2026 and are estimates only.