Last updated: By ConcreteFinder Research Team
There are 6 foundation contractors on ConcreteFinder's Oshawa list, rated 4.92★ on average, supported by 331 Google reviews this July 2026. With 5 companies carrying enough reviews to rate, the small differences in position here are meaningful. There are no advertiser slots and no paid boosts here: the order is set by the data alone.
All 6 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.
1Leaky basement repair, Interior and exterior basement waterproofing, and window wells. Locally owned and operated in the Oshawa area for the past 40 years with a Lifetime Warranty. Call your local basement leak repair specialist today!
2Aquaphobia Foundation Repair proudly serves homeowners throughout Durham Region, including Pickering, Ajax, Whitby, Oshawa, Courtice, Bowmanville, and Newcastle
3Welcome To Elite Foundations FOUNDATION CRACK REPAIR Do you have a leaky basement? We can fix it. Call Elite Foundations, the specialist in foundation crack repairs. Speak With a Foundation Sepcialist About Elite Foundation At Elite Foundations, we specialize in repairing foundation cracks and protecting homes from water damage. We understand that foundation issues can […]
4Reliable basement waterproofing in Oshawa. Stop water leaks, repair foundation cracks, and protect your home from moisture damage.
5As a Family Owned Business we've taken pride in being part of our customers projects for over 40 years in Ontario. No project is to big or to small for our concr
6We are one of the largest basement waterproofing & foundation crack repair companies, serving Toronto, Ajax, Pickering, Oshawa, & surrounding areas.
Pricing foundation and underpinning work locally is easiest to judge from real line items. Basement underpinning - turn-key project (engineering, permits, waterproofing, plumbing, new slab) runs $50–$105 per sq ft, per Strong Basements (low end: Nusite Group), and full-basement underpinning - total project cost runs $50,000–$120,000 per project, per Capable Group Inc.. Pricing across Oshawa usually lands near the GTA midpoint. All figures come before 13% HST.
| Item | Typical range | Unit | Source |
|---|---|---|---|
| Structural engineering drawings for underpinning permit | $1,500–$6,000(typ. $2,000–$5,000) | per project | Strong Basements (corroborated by SEPCO Engineering $1,500–$4,000+) |
| 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 |
| 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 |
| Screw pile / helical pier underpinning | $3,000–$5,000(typ. $3,500–$4,500) | per pile | Capable Group Inc. |
| Bench footing - priced by floor area | $35–$60(typ. $40–$55) | per sq ft | Nusite Group |
The ranking on this page blends each firm's star average with its review count, so the 6 companies in Oshawa are judged on durable reputation. The median company here carries 79 Google reviews. ConcreteFinder adds minor boosts for verifiable details and sells no placements. Read our full methodology.
If none of the Oshawa shortlist suits, check foundation and underpinning work in adjacent areas or ConcreteFinder's other rankings nearby.
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