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Best Foundation & Underpinning Contractors in North York (2026)

Last updated: By ConcreteFinder Research Team

In North York, ConcreteFinder counts 22 foundation contractors averaging 4.88★ on Google, drawn from 1,297 reviews collected for July 2026. Roughly 100% of the field here publishes a working website, which we treat as one trust signal among several. There are no advertiser slots here: every input to the order is published, and claiming a listing costs nothing.

Which foundation contractors rank highest in North York?

ConcreteFinder lists 22 contractors in North York here, sorted so steady, well-reviewed operators lead and thin one-off ratings do not. Every card links a profile and a quote request.

  1. Dryshield Basement Waterproofing: concrete work photographed at the business1

    Dryshield Basement Waterproofing

    86/100 ConcreteFinder Score

    282 reviews · 4.9

    Willowdale

    • Foundations & Underpinning
    • Concrete Repair & Leveling
    • Polished Concrete & Epoxy Floors
    • 7 days, Open 24 hours
    • Says it is licensed
    • Says it is insured

    3 of 4 details on file · Listed for foundation contractor work around Willowdale, 282 Google reviews average 4.9★, also listed under concrete repair & leveling and polished concrete & epoxy floors.

  2. SolidCore Inc.: concrete work photographed at the business2

    SolidCore Inc.

    76/100 ConcreteFinder Score

    46 reviews · 5.0

    Willowdale

    • Foundations & Underpinning
    • Concrete Driveways
    • Concrete Patios & Walkways
    • Mon to Fri, 8 a.m. to 5 p.m.
    • Says it is insured
    • Says it carries WSIB coverage

    3 of 4 details on file · A foundation contractor working Willowdale, 46 Google reviews average 5.0★, also listed under concrete driveways and concrete patios & walkways.

  3. Last King Construction Inc: concrete work photographed at the business3

    Last King Construction Inc

    70/100 ConcreteFinder Score

    31 reviews · 5.0

    Bayview Village

    • Foundations & Underpinning
    • Concrete Contractors
    • Says it is licensed
    • Says it is insured

    2 of 4 details on file · Pours in Bayview Village as a foundation contractor, 31 Google reviews average 5.0★, also listed under concrete contractors.

    Same phone number, separate branch profile: Last King Construction. (Don Mills)

  4. Maximum General Contracting: concrete work photographed at the business4

    Maximum General Contracting

    69/100 ConcreteFinder Score

    5 reviews · 5.0

    Don Mills

    • Foundations & Underpinning
    • Mon to Fri, 9 a.m. to 6 p.m.
    • Says it is licensed
    • Says it is insured

    3 of 4 details on file · Don Mills foundation contractor, 5 Google reviews average 5.0★, posted working hours.

  5. NTL Contracting and Waterproofing Inc.: concrete work photographed at the business5

    NTL Contracting and Waterproofing Inc.

    67/100 ConcreteFinder Score

    51 reviews · 4.8

    Willowdale

    • Foundations & Underpinning
    • Concrete Contractors
    • 6 days a week, 7 a.m. to 5 p.m.
    • Says it is insured
    • Says about 20 years going

    3 of 4 details on file · Listed for foundation contractor work around Willowdale, 51 Google reviews average 4.8★, also listed under concrete contractors.

  6. C6

    City Wide Group

    67/100 ConcreteFinder Score

    184 reviews · 4.8

    Don Mills

    • Foundations & Underpinning
    • 7 days, 8 a.m. to 8 p.m.
    • Says it has been going since 1961

    2 of 4 details on file · A foundation contractor working Don Mills, 184 Google reviews average 4.8★, posted working hours.

  7. Dryshield Basement Waterproofing Vaughan: concrete work photographed at the business7

    Dryshield Basement Waterproofing Vaughan

    67/100 ConcreteFinder Score

    69 reviews · 4.5

    Willowdale

    • Concrete Repair & Leveling
    • Foundations & Underpinning
    • 7 days, 6 a.m. to 11 p.m.
    • Says it is licensed
    • Says it is insured

    3 of 4 details on file · A concrete repair contractor working Willowdale, 69 Google reviews average 4.5★, also listed under foundations & underpinning.

  8. Barakah Waterproofing: concrete work photographed at the business8

    Barakah Waterproofing

    64/100 ConcreteFinder Score

    19 reviews · 4.9

    Don Mills

    • Foundations & Underpinning
    • 7 days, Open 24 hours
    • Says it has been going since 1999

    3 of 4 details on file · Listed for foundation contractor work around Don Mills, 19 Google reviews average 4.9★, posted working hours.

  9. R10

    RCC Waterproofing Vaughan

    61/100 ConcreteFinder Score

    205 reviews · 4.9

    Willowdale

    • Foundations & Underpinning
    • 7 days, Open 24 hours

    2 of 4 details on file · Pours in Willowdale as a foundation contractor, 205 Google reviews average 4.9★, posted working hours.

  10. Look No Further Contracting & Design Inc: concrete work photographed at the business11

    Look No Further Contracting & Design Inc

    61/100 ConcreteFinder Score

    10 reviews · 5.0

    Willowdale

    • Stamped & Decorative Concrete
    • Concrete Contractors
    • Foundations & Underpinning
    • Mon to Sat, 7 a.m. to 6 p.m.
    • Says about 21 years going

    3 of 4 details on file · Pours in Willowdale as a stamped concrete contractor, 10 Google reviews average 5.0★, also listed under concrete contractors and foundations & underpinning.

  11. Maple Leaf Construction: concrete work photographed at the business12

    Maple Leaf Construction

    60/100 ConcreteFinder Score

    25 reviews · 5.0

    Don Mills

    • Foundations & Underpinning
    • Concrete Contractors
    • Mon to Fri, 8 a.m. to 6 p.m.

    3 of 4 details on file · Listed for foundation contractor work around Don Mills, 25 Google reviews average 5.0★, also listed under concrete contractors.

  12. Stay Dry Waterproofing: concrete work photographed at the business13

    Stay Dry Waterproofing

    59/100 ConcreteFinder Score

    105 reviews · 4.8

    York Mills

    • Foundations & Underpinning
    • 7 days, Open 24 hours

    3 of 4 details on file · A foundation contractor working York Mills, 105 Google reviews average 4.8★, posted working hours.

  13. SDM Contractor: concrete work photographed at the business15

    SDM Contractor

    58/100 ConcreteFinder Score

    16 reviews · 5.0

    Don Mills

    • Foundations & Underpinning
    • Concrete Contractors
    • Stamped & Decorative Concrete
    • 7 days, 9 a.m. to 5 p.m.

    3 of 4 details on file · Don Mills foundation contractor, 16 Google reviews average 5.0★, also listed under concrete contractors and stamped & decorative concrete.

  14. Nova Landscaping: concrete work photographed at the business16

    Nova Landscaping

    56/100 ConcreteFinder Score

    10 reviews · 5.0

    Don Mills

    • Concrete Contractors
    • Foundations & Underpinning
    • 7 days, Open 24 hours

    3 of 4 details on file · A concrete contractor working Don Mills, 10 Google reviews average 5.0★, also listed under foundations & underpinning.

  15. Direct Waterproofing Vaughan: concrete work photographed at the business17

    Direct Waterproofing Vaughan

    55/100 ConcreteFinder Score

    10 reviews · 5.0

    Willowdale

    • Foundations & Underpinning
    • Mon to Sat, 7 a.m. to 9 p.m.

    3 of 4 details on file · Listed for foundation contractor work around Willowdale, 10 Google reviews average 5.0★, posted working hours.

  16. 24/7 Pros Inc.: concrete work photographed at the business18

    24/7 Pros Inc.

    54/100 ConcreteFinder Score

    2 reviews · 5.0

    Willowdale

    • Foundations & Underpinning
    • Mon to Sat, 7:30 a.m. to 7 p.m.
    • Says it carries WSIB coverage
    • Says about 35 years going

    3 of 4 details on file · Listed for foundation contractor work around Willowdale, 2 Google reviews average 5.0★, posted working hours.

  17. Ferreira And Sons Construction: concrete work photographed at the business19

    Ferreira And Sons Construction

    54/100 ConcreteFinder Score

    34 reviews · 4.1

    Bayview Village

    • Foundations & Underpinning
    • Concrete Contractors
    • Concrete Repair & Leveling
    • Says about 20 years going

    2 of 4 details on file · Bayview Village foundation contractor, 34 Google reviews average 4.1★, also listed under concrete contractors and concrete repair & leveling.

  18. R20

    RCC Waterproofing Scarborough

    54/100 ConcreteFinder Score

    19 reviews · 4.9

    Don Mills

    • Foundations & Underpinning
    • 7 days, Open 24 hours

    2 of 4 details on file · Listed for foundation contractor work around Don Mills, 19 Google reviews average 4.9★, posted working hours.

  19. T21

    Toronto Foundation Repair

    52/100 ConcreteFinder Score

    8 reviews · 5.0

    Willowdale

    • Foundations & Underpinning
    • 7 days, 9 a.m. to 6 p.m.

    2 of 4 details on file · A foundation contractor working Willowdale, 8 Google reviews average 5.0★, posted working hours.

  20. Stone Mason Toronto: concrete work photographed at the business22

    Stone Mason Toronto

    49/100 ConcreteFinder Score

    No reviews yet

    Bayview Village

    • Concrete Patios & Walkways
    • Foundations & Underpinning
    • Concrete Repair & Leveling
    • 7 days, 9 a.m. to 8 p.m.
    • Says it is licensed

    3 of 4 details on file · Bayview Village concrete patio contractor, also listed under foundations & underpinning and concrete repair & leveling, posted working hours.

How much does foundation and underpinning work cost in North York?

For the area, our July 2026 dataset puts structural engineering drawings for underpinning permit runs $2,000–$5,000 per project (Strong Basements (Toronto)) and structural engineer hourly rate (Toronto/GTA) runs $150–$300 per hour (SEPCO Engineering). Inside Toronto, tighter site access and disposal fees can push North York quotes toward the top of these ranges. Those ranges exclude 13% HST.

Typical GTA foundations & underpinning prices for North York, July 2026. Each row cites its source.
ItemTypical rangeUnitSource
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–$1,500per projectNusite Group (Toronto underpinning contractor)
Exterior waterproofing, as part of a basement-lowering projectNusite prices this only where exterior work is needed; an interior waterproofing system on the same job is $5,000 to $8,000, and the waterproofing line as a whole is $5,000 to $15,000.$10,000–$15,000per projectNusite Group (Toronto underpinning contractor)
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 visitSEPCO Engineering
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–$5,000per projectStrong 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–$300per hourSEPCO 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–$1,000per crackDryShield Basement Waterproofing (Toronto/GTA, 2026)

See the full Foundations & Underpinning cost guide

How does ConcreteFinder rank foundation contractors in North York?

Positions here reflect a published score that weighs how many reviews back each rating, not just the average, across the 22 foundation contractors on this page. The median company here carries 34 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.

Frequently asked questions

What should a written foundation and underpinning work quote include in North York?

An honest North York 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.

How does ConcreteFinder rank foundation contractors in North York?

No, placement can't be bought. We rank the 22 North York foundation contractors here on a published score out of 100: reviews with volume weighed, what the company states on its own site, and the state of its record. In North York, 90% of rated companies clear 4.8★, so small gaps matter.

How much choice do I have for foundation and underpinning work in North York?

ConcreteFinder lists 22 foundation contractors actively serving North York as of July 2026, at an average Google rating of 4.88★ and a median of 34 reviews each. Compare at least three of these quotes before hiring.

Do I need a permit to underpin a basement in North York?

A North York underpinning project cannot proceed without a permit. Structural foundation work requires engineered, stamped drawings from a licensed Ontario engineer and staged inspections under the Building Code. Budget for that engineering and oversight up front; the upside is that this excavation work can be done in any season.

How much does foundation and underpinning work cost in North York?

Building permit line as quoted by contractors runs $1,000–$1,500 per project across the GTA, per Nusite Group (Toronto underpinning contractor). Quotes there can sit at the higher end. Figures exclude 13% HST; our foundations & underpinning cost guide breaks down every line item for North York.

What's the best time of year for foundation and underpinning work in North York?

Frost does not stop foundation and underpinning work here: crews work through winter on interior and below-grade jobs. Reputable North York foundation contractors still book ahead, so start early and compare a few.

Questions to ask your contractor

  • Will you provide stamped engineering drawings and pull the building permit? Engineering and permit cost benchmarks
  • How do you protect the existing structure and the neighbours during excavation?
  • What is the inspection schedule, and who books the city inspections?
  • What waterproofing and drainage go in while the foundation is open?

Where else can you compare foundation contractors near North York?

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