345 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in King: Groundworks, CR Score 64/100; 4.9★ from 1,412 Google reviews; open 7 days a week.
Best for emergencies (open 24/7): RCC Waterproofing Toronto, posts 24/7 hours; ranked #2 of 345.
Most-reviewed: Aquatech Basement Waterproofing Toronto, 655 Google reviews at 5.0★, the most of 345 ranked after Groundworks; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
345 King foundation repair companies are ranked here by CR Score, from ten published factors. 138 are open 24/7, 281 open Saturdays and 209 open Sundays, based on posted hours. The median Google rating is 5.0★ across 345 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Groundworks | 64 | 4.9★ (1,412) | East Gwillimbury, 23 km away | Sat · Sun · Evenings | Overall |
| 2 | RCC Waterproofing Toronto | 63 | 4.8★ (634) | Toronto, 32 km away | 24/7 | Emergencies |
| 3 | Pro-Leak Solutions | 63 | 5.0★ (208) | East Gwillimbury, 9 km away | Sat · Sun · Evenings | — |
| 4 | Aquatech Basement Waterproofing Toronto | 63 | 5.0★ (655) | Toronto, 33 km away | Sat · Sun · Evenings | Most reviews |
| 5 | RCC Waterproofing Vaughan | 62 | 4.9★ (180) | Concord, 22 km away | 24/7 | — |
| 6 | Aquatech Waterproofing | 62 | 5.0★ (78) | Vaughan, 17 km away | 24/7 | — |
| 7 | Dryshield Waterproofing Toronto | 61 | 4.9★ (245) | North York, 23 km away | Sat · Sun · Evenings | — |
| 8 | RCC Waterproofing North York | 61 | 4.9★ (77) | Toronto, 22 km away | 24/7 | — |
| 9 | Direct Basement Waterproofing Toronto | 61 | 5.0★ (271) | Toronto, 34 km away | Sat · Sun · Evenings | — |
| 10 | Stay Dry Waterproofing | 61 | 4.8★ (97) | North York, 25 km away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 1,412 Google reviews, listed on Google as “Waterproofing service”.
Based in Toronto, 32 km away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 634 Google reviews, listed on Google as “Waterproofing service”.
Based in East Gwillimbury, 9 km away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 208 Google reviews, listed on Google as “Waterproofing service”.
Based in Toronto, 33 km away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 655 Google reviews, listed on Google as “Waterproofing service”.
Based in Concord, 22 km away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 180 Google reviews, listed on Google as “Waterproofing service”.
Based in Vaughan, 17 km away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 78 Google reviews, listed on Google as “Waterproofing service”.
Based in North York, 23 km away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 245 Google reviews, listed on Google as “Waterproofing service”.
Based in Toronto, 22 km away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 77 Google reviews, listed on Google as “Waterproofing service”.
Based in Toronto, 34 km away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 271 Google reviews, listed on Google as “Waterproofing service”.
Based in North York, 25 km away
Ranked #10 because of its Google rating and trade focus: 4.8★ from 97 Google reviews, listed on Google as “Waterproofing service”.
Based in Mississauga, 45 km away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 316 Google reviews, listed on Google as “Waterproofing service”.
Based in Toronto, 39 km away
Ranked #12 because of its Google rating and trade focus: 4.9★ from 274 Google reviews, listed on Google as “Waterproofing service”.
Based in Mississauga, 44 km away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 109 Google reviews, listed on Google as “Waterproofing service”.
Based in Mississauga, 42 km away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 121 Google reviews, listed on Google as “Waterproofing service”.
Based in Mississauga, 46 km away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 121 Google reviews, listed on Google as “Waterproofing service”.
Based in Mississauga, 36 km away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 70 Google reviews, listed on Google as “Waterproofing service”.
Based in Mississauga, 48 km away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 123 Google reviews, listed on Google as “Waterproofing service”.
Based in Markham, 22 km away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 32 Google reviews, listed on Google as “Waterproofing service”.
Based in Mississauga, 38 km away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 166 Google reviews, listed on Google as “Waterproofing service”.
Based in Richmond Hill, 22 km away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Waterproofing service”.
Based in Mississauga, 40 km away
Ranked #21 because of its Google rating and trade focus: 5.0★ from 161 Google reviews, listed on Google as “Waterproofing service”.
Based in Toronto, 36 km away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 51 Google reviews, listed on Google as “Waterproofing service”.
Based in Etobicoke, 37 km away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 50 Google reviews, listed on Google as “Waterproofing service”.
Based in East York, 36 km away
Ranked #24 because of its Google rating and trade focus: 4.8★ from 177 Google reviews, listed on Google as “Waterproofing service”.
Based in Toronto, 39 km away
Ranked #25 because of its Google rating and trade focus: 5.0★ from 51 Google reviews, listed on Google as “Waterproofing service”.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 345 ranked foundation repair companies here; the rest are on their profiles.
20 more foundation repair companies within 64 km that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Adems Restoration | In King | |
| Advanced Construction Techniques Ltd | 4.8★ (4) | In King |
| Banz Renovation in Vaughan | 5.0★ (61) | In King |
| Basement Waterproofing Markham | 5.0★ (2) | 24 km |
| Dakota Contracting and Improvements Limited | In King | |
| First Base Construction inc. | 5.0★ (2) | 25 km |
| Homepros basement waterproofing Concord | 5.0★ (2) | 24 km |
| King Cross Contracting Limited | 5.0★ (1) | In King |
| Kings Haven Construction | In King | |
| Kings Restoration Group | 4.7★ (12) | In King |
| Look No Further Contracting & Design Inc | 5.0★ (10) | In King |
| MT Drains & Plumbers Newmarket : Foundation Repair & Basement Waterproofing Aurora | 5.0★ (2) | 12 km |
| Myles Fisher Masonry | 5.0★ (3) | In King |
| Noble King Medical Group | In King | |
| ProModel Construction Inc. | 5.0★ (3) | In King |
| Regalia Concrete LTD | In King | |
| ROM Masonry | 5.0★ (1) | In King |
| Roof Wise Roofing & Masonry | 3.0★ (2) | 22 km |
| Top To Bottom Maintenance and Renovations | 5.0★ (3) | In King |
| Tradecon Services | 5.0★ (25) | In King |
US national ranges converted to CAD, not adjusted for King. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Foundation repair | CA$3,130 | CA$7,270 | CA$11,430 | Per project: typical range of customer-reported repairs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | October 2026 |
We scored 345 King foundation repair companies on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In King data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |