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St. Catharines · updated October 2026

Foundation Repair Companies in St. Catharines: the standings

20 foundation repair companies serving St. Catharines, ranked by Google rating and review count. The bar shows each one's review volume against the leader. Arrows show movement since Sep 6. Nobody can pay to move up.

Featured slot — open

One labelled spot above these standings, reserved for a claimed St. Catharines business. It never changes the ranking below. Claim your listing to take it.

Who leads foundation repair companies in St. Catharines right now

  1. 1

    Ontario Concrete Raising Ltd.

    ★★★★★ 5 · 268 reviews · St. Catharines · (289) 969-5438
    new 0 reviews since Sep 6
  2. 2

    Proseal Waterproofing & Contracting Inc.

    ★★★★★ 4.8 · 125 reviews · Niagara Falls · (905) 380-7122
    — +3 reviews since Sep 6
  3. 3

    Aquatech Waterproofing

    ★★★★★ 5 · 76 reviews · St. Catharines · (289) 277-5497
    — 0 reviews since Sep 6
  4. 4

    McMillan Waterproofing Niagara

    ★★★★★ 5 · 64 reviews · Niagara Falls · (905) 714-6789
    — 0 reviews since Sep 6
  5. 5

    Foundation Fix Inc.

    ★★★★★ 4.8 · 75 reviews · St. Catharines · (905) 931-0303
    — +3 reviews since Sep 6
  6. 6

    Mitchell's Stucco and Parging

    ★★★★★ 4.8 · 66 reviews · St. Catharines · (289) 929-1032
    — +3 reviews since Sep 6
  7. 7

    CCR Crack injections

    ★★★★★ 5 · 44 reviews · Niagara Falls · (289) 981-3178
    — +2 reviews since Sep 6
  8. 8

    Basement Waterproofing Niagara Falls

    ★★★★★ 5 · 43 reviews · Niagara Falls · (647) 372-2854
    new 0 reviews since Sep 6
  9. 9

    Complete Casa Construction

    ★★★★★ 5 · 32 reviews · St. Catharines · (289) 929-8988
    ▼1 0 reviews since Sep 6
  10. 10

    Basement Waterproofing St. Catharines

    ★★★★★ 5 · 28 reviews · St. Catharines · (289) 906-3714
    ▼1 0 reviews since Sep 6
  11. 11

    Structured Restoration - Niagara

    ★★★★★ 5 · 20 reviews · St. Catharines · (833) 677-5070
    — +2 reviews since Sep 6
  12. 12

    Robson Foundations

    ★★★★★ 4.6 · 21 reviews · St. Catharines · (905) 732-7445
    — 0 reviews since Sep 6
  13. 13

    Sfd Concrete

    ★★★★★ 4.8 · 15 reviews · St. Catharines · (905) 650-4966
    new 0 reviews since Sep 6
  14. 14

    Foundation Expert

    ★★★★★ 5 · 12 reviews · St. Catharines · (289) 438-6369
    ▼1 0 reviews since Sep 6
  15. 15

    Seal-Tite Quality Concrete

    ★★★★★ 5 · 12 reviews · St. Catharines · (905) 937-3338
    ▼1 0 reviews since Sep 6
  16. 16

    All-Pro Waterproofing & Excavating Inc

    ★★★★★ 4.5 · 13 reviews · Niagara Falls · (905) 933-6021
    ▼1 0 reviews since Sep 6
  17. 17

    Moffat Foundations & Repair

    ★★★★☆ 4 · 13 reviews · Niagara Falls · (289) 783-3233
    ▼1 0 reviews since Sep 6
  18. 18

    Joe Shultz Waterproofing

    ★★★★★ 5 · 4 reviews · St. Catharines · (905) 646-4285
    — 0 reviews since Sep 6
  19. 19

    Classic Waterproofing Unclaimed

    ★★★★★ 5 · 3 reviews · St. Catharines · 063 678 7098
    — 0 reviews since Sep 6
  20. 20

    Rocco Concrete Inc

    ★★★★★ 5 · 2 reviews · St. Catharines · (289) 228-8182
    — 0 reviews since Sep 6
How the standings work. Rank = Google rating × review volume, observed for the St. Catharines area in October 2026. No submissions, no fees, no exceptions — a business moves up by earning reviews, not by paying us. Refreshed monthly. 6 of 20 changed rank since Sep 6. See this month's movers.

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