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Foundation Repair Costs in Canada
Published Canadian data puts a single crack injection at roughly $400 to $2,500, structural underpinning at $500 to $800 per linear foot, and major foundation projects anywhere from $8,000 to $86,000 depending on scope.
Foundation pricing spans a wider range than almost any other home repair because 'foundation repair' covers everything from a $500 crack injection to a $60,000 underpinning project. The first job is figuring out which problem you actually have, and that is what most of this page is about.
Every figure comes from a published Canadian source, named beside each row and linked at the bottom. Foundation work is heavily site-specific, so treat these ranges as a sanity check on quotes, never as a substitute for an inspection.
Typical foundation repair costs in Canada
Published ranges in Canadian dollars. Foundation pricing depends on soil, access and the actual failure, so an inspection always comes before a real quote.
| Job | Low | Typical | High | Source |
|---|---|---|---|---|
| Crack injection, per crack (Ontario guide)Epoxy or polyurethane, depending on whether the crack is structural | $400 | $400 to $2,500 | $2,500 | Ontario Foundations |
| Polyurethane crack injection (GTA)Standard non-structural leaking crack repair | $750 | $750 to $1,500 | $1,500 | DryShield |
| Underpinning, per linear foot (GTA)Structural work requiring engineering and permits | $500 per linear ft | $500 to $800 per linear ft | $800 per linear ft | DryShield |
| Typical foundation repair project (national data)Aggregated project data across four provinces | $10,650 | $10,650 to $24,175 | $24,175 | Canada Construction Network |
| Full underpinning project (national data)Basement lowering and full perimeter work sit at the top | $36,667 | $36,667 to $86,667 | $86,667 | Canada Construction Network |
| Underpinning project (Ontario guide)Partial underpinning at the low end, full perimeter above | $8,000 | $8,000 to $30,000 and up | $30,000 and up | Ontario Foundations |
Figures gathered October 2026. Published third-party ranges, not CentFix pricing.
First figure out which problem you have
Most foundation cracks in Canadian homes are not structural. Poured concrete shrinks as it cures, and the vertical hairline cracks that result are common in homes of every age. They leak, which is annoying and worth fixing, but a polyurethane injection handles them at the low end of the ranges above.
The cracks that matter run horizontally, stair-step through block mortar, or come with a wall that is visibly bowing, tilting or shearing at the bottom. Those point to soil pressure or settlement, and they are structural. The repair is not an injection, it is reinforcement or underpinning, and the pricing is in the tens of thousands, not the hundreds.
If you are not sure which you have, pay for an independent assessment before accepting any repair quote. A structural engineer who does not sell repairs has no reason to upsell you, and their report makes every subsequent quote comparable.
What actually drives a foundation repair quote
Access decides more than homeowners expect. An interior crack injection on an unfinished basement wall is quick. The same crack behind finished drywall, a furnace and ten years of storage means demolition and rebuild around the repair. Exterior excavation goes further: digging to the footing by hand around gas lines and gardens is slow, expensive work.
Soil and water conditions set the underlying difficulty. Expansive clay, high water tables and poor grading are behind most Canadian foundation failures, and a repair that does not address the drainage that caused the problem is a repair you will pay for twice.
- Whether the issue is a leaking crack or structural movement
- Interior versus exterior access to the failed section
- Depth of excavation required to reach the footing
- Soil type and water table on the property
- Engineering reports and permits for structural work
- Finishing restoration: drywall, flooring, landscaping, driveways
Repair options from cheapest to most involved
Crack injection sits at the bottom: epoxy for structural bonding, polyurethane for active leaks, a few hundred to a couple of thousand dollars per crack in published Ontario data. It solves the crack, not the cause, which is fine when the cause was curing shrinkage.
Reinforcement comes next: carbon fibre straps or steel braces for walls that are bowing but not yet failed. Underpinning, where new footings are placed beneath the existing foundation, is the top of the ladder. Published GTA data prices it at $500 to $800 per linear foot, and full-perimeter jobs in national aggregated data run from the high thirties into the eighties of thousands. It is also the work that adds basement height or stabilizes a settling home permanently, which is why people do it.
What a fair foundation quote should itemize
Foundation quotes are where vague paperwork costs homeowners the most. Anything structural should come with engineering, permits and a written scope.
- The diagnosis: what failed, and what evidence supports that
- The repair method, named specifically, not 'foundation repair'
- Linear footage or crack count the price is based on
- Engineering and permit costs for structural work
- What restoration is included afterwards and what is not
- The warranty: length, whether it transfers to a buyer, and what voids it
Why foundation warranties matter at resale
Foundation work with a transferable, written warranty becomes part of the documented history of the house. When you sell, buyers and their inspectors will ask about any past water or structural issues, and a warranted repair with paperwork answers the question. An undocumented repair answers it the other way.
Common questions
Published Ontario data puts crack injection at roughly $400 to $2,500 per crack, with standard polyurethane injections in the GTA running $750 to $1,500. Hairline shrinkage cracks sit at the low end.
Published GTA data prices structural underpinning at $500 to $800 per linear foot. National aggregated data puts full underpinning projects at $36,667 to $86,667, with partial projects from around $8,000.
Vertical hairline cracks are usually curing shrinkage and mostly a leaking problem. Horizontal cracks, stair-step cracks in block walls, and any crack with a bowing or shifting wall behind it are structural warning signs. When in doubt, pay for an independent structural assessment before accepting a repair quote.
Standard home policies in Canada generally exclude gradual settlement and cracking. Sudden damage from an insured event may be different. Check your policy before assuming either way.
No. CentFix does not set prices or do the work. These figures come from the published Canadian sources listed at the bottom of this page. Quotes through CentFix come from independent local contractors, with no obligation to hire.
Sources
- Ontario Foundations, Foundation Repair Cost Guide Ontario
- DryShield, Foundation Repair Cost Calculator
- Canada Construction Network, Foundation Repair Costs
Prices move. These figures were gathered in October 2026 and are national or city level references from third-party publishers. CentFix does not set prices or perform the work.