1Verified listingTop rated
Direct Waterproofing Inc
Foundations & Underpinning
Reliable leaky basement waterproofing services in Markham. Transparent prices, Free on-site inspection, 25 years of warranty. Book a Free quote today!
Best Foundation & Underpinning Contractors in Markham (2026)
Last updated: By ConcreteFinder Research Team
4 foundation contractors currently serve Markham, averaging 4.97★ on Google across 95 combined reviews, per ConcreteFinder's July 2026 dataset. Roughly 100% of the field here publishes a working website, which we treat as one trust signal among several. As reviews accumulate, we update the order, so it stays current.
Which foundation contractors rank highest in Markham?
All 4 foundation contractors we track appear below in ranked order, with review volume weighed alongside the star average. Each card leads to a full profile and a free quote.
- 1
2Verified listingConcrete Markham
Concrete ContractorsResidential and commercial concrete contractor services in Markham, ON & York Region. Driveways, patios, pool decks, stamped concrete, foundations. Call us today for a FREE no obligation quote! 647-694-9551.
3Verified listingTop ratedRCC Waterproofing Markham
Foundations & UnderpinningUncover the superior quality of RCC Waterproofing Markham, your go-to source for elite basement waterproofing solutions. We offer an extensive selection of services, products, and customized projects specifically designed for the Markham area. Trust our expertise to keep your property's foundation dry and secure with unparalleled precision and care.
4Verified listingACCL Wet Basement, Foundation Crack Repair and Waterproofing
Foundations & Underpinning
How much does foundation and underpinning work cost in Markham?
For the area, our July 2026 dataset puts bench footing (basement lowering alternative) runs $75–$400 per linear foot (CSG Renovation (high end: Strong Basements)) and bench footing - priced by floor area runs $35–$60 per sq ft (Nusite Group). Pricing across Markham usually lands near the GTA midpoint. Those ranges exclude 13% HST.
| Item | Typical range | Unit | Source |
|---|---|---|---|
| Foundation crack repair - structural epoxy injection | $800–$2,500(typ. $1,000–$1,800) | per crack | DryShield Water Solutions |
| Structural engineer site inspection / assessment | $600–$1,200(typ. $700–$1,000) | per visit | SEPCO Engineering |
| Structural engineer hourly rate (Toronto/GTA) | $150–$300(typ. $200–$250) | per hour | SEPCO Engineering |
| Screw pile / helical pier underpinning | $3,000–$5,000(typ. $3,500–$4,500) | per pile | Capable Group Inc. |
| Bench footing (basement lowering alternative) | $75–$400(typ. $250–$350) | per linear foot | CSG Renovation (high end: Strong Basements) |
| City of Toronto building permit - underpinning (direct city fee) | $214.79–~$400(typ. under $400 for a standard house) | per permit ($12.37/linear metre, $214.79 minimum, 2026) | City of Toronto Building Permit Fee Schedule |
How does ConcreteFinder rank foundation contractors in Markham?
Every foundation contractor here is ranked by the same public formula: a review-volume-weighted Google rating plus small, checkable verification boosts. The median company here carries 38 Google reviews. That keeps the list of 4 honest, and no spot is ever paid for. Read our full methodology.
Frequently asked questions
What should a written foundation and underpinning work quote include in Markham?
- An honest Markham quote names the prep, mix and thickness, reinforcement, finish, joints and disposal, then deposit, stages and warranty. If a bid is a single lump sum with no breakdown, ask for the itemized version before you sign.
Are these Markham rankings paid placements?
- Markham rankings are not paid. The 4 companies here are ordered by a review-volume-weighted Google score and light verification checks, and no one can pay to move up. Full details live on our methodology page.
Do I need a permit to underpin a basement in Markham?
- Always. Lowering a basement by underpinning or bench footing is structural: it needs a building permit, stamped engineering under the Ontario Building Code, and staged municipal inspections. Expect a longer, controlled Markham schedule than flatwork, though the below-grade nature means it is not limited to the pour season.
What should I budget for foundation and underpinning work in Markham?
- For Markham, one July 2026 benchmark: permits + engineering as bundled by contractors runs $2,000–$5,000 per project in the GTA (Nusite Group). Quotes there usually track that GTA range. Add 13% HST, and see the full foundations & underpinning cost guide.
How far ahead do foundation contractors in Markham book up?
- In Markham, this is year-round work, since it happens indoors or below grade rather than on open ground. Good local foundation contractors book up in peak weeks, so request quotes with some lead time.
Do foundation contractors in Markham give free quotes?
- Yes. A free on-site estimate is standard among local foundation contractors. ConcreteFinder routes your Markham request to up to three matched pros so you compare real quotes without paying to shop around.
Questions to ask your contractor
- What is the inspection schedule, and who books the city inspections?
- How do you protect the existing structure and the neighbours during excavation?
- What waterproofing and drainage go in while the foundation is open?
- Is this underpinning or bench footing, and why is that right for my house?
Where else can you compare foundation contractors near Markham?
Not finding the right Markham fit? Browse foundation and underpinning work in nearby areas, or compare other ConcreteFinder service rankings in the area.
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