Last updated: By ConcreteFinder Research Team
In Mississauga, ConcreteFinder counts 6 foundation contractors averaging 4.9★ on Google, drawn from 451 reviews collected for July 2026. A typical foundation contractor on this list carries 53 Google reviews, enough history to judge real workmanship, and our ranking weighs that volume, not just stars. There are no advertiser slots here: every input to the order is published, and claiming a listing costs nothing.
ConcreteFinder lists 6 contractors in Mississauga here, sorted so steady, well-reviewed operators lead and thin one-off ratings do not. Every card links a profile and a quote request.
168/100 ConcreteFinder Score
31 reviews · 4.7
Mississauga
3 of 4 details on file · A foundation contractor working Mississauga, 31 Google reviews average 4.7★, also listed under concrete contractors and concrete repair & leveling.
267/100 ConcreteFinder Score
174 reviews · 5.0
Mississauga
3 of 4 details on file · A foundation contractor working Mississauga, 174 Google reviews average 5.0★, posted working hours.
365/100 ConcreteFinder Score
44 reviews · 4.8
Mississauga
3 of 4 details on file · Pours in Mississauga as a foundation contractor, 44 Google reviews average 4.8★, posted working hours.
464/100 ConcreteFinder Score
53 reviews · 5.0
Mississauga
3 of 4 details on file · Mississauga foundation contractor, 53 Google reviews average 5.0★, also listed under concrete contractors.
560/100 ConcreteFinder Score
23 reviews · 5.0
Mississauga
3 of 4 details on file · Pours in Mississauga as a foundation contractor, 23 Google reviews average 5.0★, posted working hours.
60/100 ConcreteFinder Score
126 reviews · 4.9
Mississauga
2 of 4 details on file · Listed for foundation contractor work around Mississauga, 126 Google reviews average 4.9★, posted working hours.
Homeowners pricing foundation and underpinning work here can anchor on two line items: foundation crack repair - structural epoxy injection runs $750–$1,500 per crack (DryShield Basement Waterproofing (Toronto/GTA, 2026)) and exterior waterproofing, as part of a basement-lowering project runs $10,000–$15,000 per project (Nusite Group (Toronto underpinning contractor)). Quotes in Mississauga generally track the wider GTA range. Add 13% HST before comparing quotes.
| Item | Typical range | Unit | Source |
|---|---|---|---|
| Structural engineering drawings for underpinning permitStrong Basements' Toronto figure for the engineer to design the underpinning around the home's structure and soil and produce a drawing set for the permit application and construction. Some design-build firms fold it into a project package instead of billing it separately. Neither the $1,500 floor nor the $6,000 ceiling this guide used to show is on their page. | $2,000–$5,000 | per project | Strong Basements (Toronto) |
| Structural engineer hourly rate (Toronto/GTA)An hourly consultation rate for advice only. SEPCO puts Toronto and the GTA at the top of the provincial band, $150 to $300 per hour, for highest demand and fastest turnaround. | $150–$300 | per hour | SEPCO Engineering |
| Foundation crack repair - polyurethane injection (leaking crack)DryShield's polyurethane tier, for stopping active leaks with a flexible seal that tolerates seasonal movement. HST and finishing work are not included unless quoted. The $500 floor this guide used to show is not on their page. | $750–$1,000 | per crack | DryShield Basement Waterproofing (Toronto/GTA, 2026) |
| Building permit line as quoted by contractorsWhat a contractor bills for the permit, not what the City charges. Nusite lists it inside a $2,000 to $5,000 permits-and-engineering line, alongside $1,000 to $3,500 for the engineer's assessment and drawings; the direct City of Toronto minimum fee is $214.79. | $1,000–$1,500 | per project | Nusite Group (Toronto underpinning contractor) |
| Foundation crack repair - structural epoxy injectionDryShield's epoxy tier, for bonding structural cracks where strength restoration is the goal. Same floor as polyurethane, higher ceiling. Neither the $800 floor nor the $2,500 ceiling this guide used to show is on their page. | $750–$1,500 | per crack | DryShield Basement Waterproofing (Toronto/GTA, 2026) |
| Structural engineer site inspection / assessmentOpen-ended at the top: SEPCO writes $600 to $1,200+. Covers a site visit, assessment and an optional letter or report. | $600–$1,200+ | per visit | SEPCO Engineering |
Positions here reflect a published score that weighs how many reviews back each rating, not just the average, across the 6 foundation contractors on this page. The median company here carries 53 Google reviews. What a company states on its own site and the state of its record count too, but placement is never for sale. Read our full methodology.
A Mississauga homeowner can anchor on this line item: basement underpinning - turn-key project (engineering, permits, waterproofing, plumbing, new slab), $80–$100 per sq ft (Strong Basements (low end: Nusite Group)). Quotes there usually track that GTA range. Add 13% HST, then compare quotes against the full cost guide.
In Mississauga, 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.
Look for a quote that spells out preparation, slab thickness, reinforcement, finish and haulaway, plus deposit, payment stages and warranty. When two Mississauga bids differ a lot, it is usually the scope, so read the line items before choosing.
Confirm any local foundation contractor carries active WSIB coverage and liability insurance before the deposit, and ask to see the certificates. ConcreteFinder shows verification signals on each profile, but that paperwork is worth a direct check.
Free estimates are the norm for local foundation contractors, usually after a short site visit. ConcreteFinder does not book them for you; it ranks the companies and publishes how to reach each one.
Yes. Underpinning, bench footings and any structural foundation work in Mississauga need a building permit plus stamped drawings from a licensed Ontario structural engineer under the Building Code, and the city inspects in stages. That process is why an underpinning job is scoped very differently from flatwork, and because it is excavation work it runs year-round.
If none of the Mississauga shortlist suits, check foundation and underpinning work in adjacent areas or ConcreteFinder's other rankings nearby.
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