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WaterproofingIndex

Best Underpinning & Basement Lowering Contractors in Toronto, Ranked (2026)

Last updated: By Below-Grade Records Desk

27 underpinning contractors cover Toronto, compiled August 2026.

1,180 Google reviews · median 4.9★ · typical $350–$480 per linear foot (Strong Basements (Toronto)) · 85% of rated companies at 4.8★ or above · scheduling: year-round; the work is inside the basement

Companies

Who does underpinning and basement lowering in Toronto?

  1. Above & Beyond Construction1

    Above & Beyond Construction

    79/100 WaterproofingIndex Score

    1.2 km from The Kingsway centre

    Underpinning & Basement Lowering
    • Says it is licensed
    • Says it is insured

    Its own website describes below-grade water work

    Request a quote
  4. The Reno Pros4

    The Reno Pros

    73/100 WaterproofingIndex Score

    0.1 km from Yonge & St. Clair centre

    Underpinning & Basement Lowering
    • Says it is insured
    • Says about 25 years going

    Its own website describes below-grade water work

    Request a quote
  5. Samara Construction Group5

    Samara Construction Group

    71/100 WaterproofingIndex Score

    1.1 km from The Danforth (Greektown) centre

    Underpinning & Basement Lowering
    • Says it carries WSIB coverage
    • Says about 21 years going

    Its own website describes below-grade water work

    Request a quote
  7. Barakah Waterproofing7

    Barakah Waterproofing

    67/100 WaterproofingIndex Score

    2.1 km from Don Mills centre

    Underpinning & Basement Lowering
    • Says it has been going since 1999

    Its own website describes below-grade water work

    Request a quote
  10. True North Underpinning10

    True North Underpinning

    66/100 WaterproofingIndex Score

    0.7 km from Leaside centre

    Underpinning & Basement Lowering
    • Says it is licensed
    • Says it is insured

    Its own website describes below-grade water work

    Request a quote
  12. Addison Design & Build12

    Addison Design & Build

    65/100 WaterproofingIndex Score

    0.1 km from The Danforth (Greektown) centre

    Underpinning & Basement Lowering
    • Says it is licensed
    • Says it is with Tarion warranty (new-home builder)

    Its own website describes below-grade water work

    Request a quote
  14. City Wide Group14

    City Wide Group

    63/100 WaterproofingIndex Score

    3.4 km from Don Mills centre

    Underpinning & Basement Lowering
    • Says it has been going since 1961

    Its own website describes below-grade water work

    Request a quote
  15. Rock Bottom Underpinning15

    Rock Bottom Underpinning

    63/100 WaterproofingIndex Score

    3.7 km from Islington-City Centre West centre

    Underpinning & Basement Lowering
    • Says it is licensed
    • Says it is insured

    Its own website describes below-grade water work

    Request a quote
  18. CFC Construction18

    CFC Construction

    60/100 WaterproofingIndex Score

    1.7 km from Mimico centre

    Underpinning & Basement Lowering
    • Says it has been going since 2020

    Its own website describes below-grade water work

    Request a quote
  20. SDM Contractor20

    SDM Contractor

    57/100 WaterproofingIndex Score

    2.0 km from Don Mills centre

    Underpinning & Basement Lowering

    Its own website describes below-grade water work

    Request a quote
  24. Concrete Master24

    Concrete Master

    53/100 WaterproofingIndex Score

    0.6 km from Mimico centre

    Underpinning & Basement Lowering
    • Says it is licensed
    • Says it is insured

    Its own website describes below-grade water work

    Request a quote

August 2026 count for Toronto: 27 underpinning contractors, 4.9★ average on Google, 1,180 reviews in total. Half carry more than 25 Google reviews and half fewer. Full underpinning & basement lowering cost guide.

Ranking

What decides the order on this page?

The WaterproofingIndex Score orders these 27 underpinning contractors, whose median review count is 25. Position is not for sale. How the score is built.

Rules

Permits and subsidies for underpinning and basement lowering

Permit rules and subsidies do not change between Toronto and the rest of the GTA, so they are answered once, on the underpinning & basement lowering page.

Coverage

Nearby areas and related work in Toronto