317 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in East Gwillimbury: Groundworks, CR Score 93/100; 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 #3 of 317.
Most-reviewed: Aquatech Basement Waterproofing Toronto, 655 Google reviews at 5.0★, the most of 317 ranked after Groundworks; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
317 East Gwillimbury foundation repair companies are ranked here by CR Score, from 8 published factors. 126 are open 24/7, 266 open Saturdays and 198 open Sundays, based on posted hours. The median Google rating is 5.0★ across 317 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Groundworks | 93 | 4.9★ (1,412) | East Gwillimbury | Sat · Sun · Evenings | Overall |
| 2 | Pro-Leak Solutions | 90 | 5.0★ (208) | East Gwillimbury | Sat · Sun · Evenings | — |
| 3 | RCC Waterproofing Toronto | 90 | 4.8★ (634) | Toronto, 43 km away | 24/7 | Emergencies |
| 4 | RCC Waterproofing Vaughan | 89 | 4.9★ (180) | Concord, 39 km away | 24/7 | — |
| 5 | Aquatech Waterproofing | 88 | 5.0★ (78) | Vaughan, 33 km away | 24/7 | — |
| 6 | Aquatech Basement Waterproofing Toronto | 88 | 5.0★ (655) | Toronto, 47 km away | Sat · Sun · Evenings | Most reviews |
| 7 | RCC Waterproofing North York | 87 | 4.9★ (77) | Toronto, 37 km away | 24/7 | — |
| 8 | Lympia Contracting Inc | 87 | 5.0★ (30) | Richmond Hill, 24 km away | 24/7 | — |
| 9 | Aquamaster Basement Waterproofing Barrie | 87 | 5.0★ (93) | Barrie, 50 km away | 24/7 | — |
| 10 | RCC Waterproofing Markham | 87 | 5.0★ (32) | Markham, 28 km away | 24/7 | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 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 East Gwillimbury
Ranked #2 because of its Google rating and trade focus: 5.0★ from 208 Google reviews, listed on Google as “Waterproofing service”.
Based in Toronto, 43 km away
Ranked #3 because of its Google rating and availability: 4.8★ from 634 Google reviews, open 24/7.
Based in Concord, 39 km away
Ranked #4 because of its Google rating and availability: 4.9★ from 180 Google reviews, open 24/7.
Based in Vaughan, 33 km away
Ranked #5 because of its Google rating and availability: 5.0★ from 78 Google reviews, open 24/7.
Based in Toronto, 47 km away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 655 Google reviews, listed on Google as “Waterproofing service”.
Based in Toronto, 37 km away
Ranked #7 because of its Google rating and availability: 4.9★ from 77 Google reviews, open 24/7.
Based in Richmond Hill, 24 km away
Ranked #8 because of its Google rating and availability: 5.0★ from 30 Google reviews, open 24/7.
Based in Barrie, 50 km away
Ranked #9 because of its Google rating and availability: 5.0★ from 93 Google reviews, open 24/7.
Based in Markham, 28 km away
Ranked #10 because of its Google rating and availability: 5.0★ from 32 Google reviews, open 24/7.
Based in North York, 40 km away
Ranked #11 because of its Google rating and availability: 4.8★ from 97 Google reviews, open 24/7.
Based in Barrie, 9 km away
Ranked #12 because of its Google rating and availability: 5.0★ from 9 Google reviews, open 24/7.
Based in Mississauga, 63 km away
Ranked #13 because of its Google rating and availability: 5.0★ from 121 Google reviews, open 24/7.
Based in Mississauga, 61 km away
Ranked #14 because of its Google rating and availability: 5.0★ from 109 Google reviews, open 24/7.
Based in Mississauga, 64 km away
Ranked #15 because of its Google rating and availability: 5.0★ from 123 Google reviews, open 24/7.
Based in Mississauga, 59 km away
Ranked #16 because of its Google rating and availability: 4.9★ from 121 Google reviews, open 24/7.
Based in Mississauga, 54 km away
Ranked #17 because of its Google rating and availability: 5.0★ from 70 Google reviews, open 24/7.
Based in North York, 39 km away
Ranked #18 because of its Google rating and trade focus: 4.9★ from 245 Google reviews, listed on Google as “Waterproofing service”.
Based in Toronto, 49 km away
Ranked #19 because of its Google rating and availability: 5.0★ from 51 Google reviews, open 24/7.
Based in Toronto, 50 km away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 271 Google reviews, listed on Google as “Waterproofing service”.
Based in Angus, 41 km away
Ranked #21 because of its Google rating and availability: 4.8★ from 49 Google reviews, open 24/7.
Based in Toronto, 51 km away
Ranked #22 because of its Google rating and availability: 5.0★ from 51 Google reviews, open 24/7.
Based in Etobicoke, 52 km away
Ranked #23 because of its Google rating and availability: 5.0★ from 50 Google reviews, open 24/7.
Based in Keswick, 15 km away
Ranked #24 because of its Google rating and availability: 5.0★ from 97 Google reviews, open 24/7.
Based in Barrie, 26 km away
Ranked #25 because of its Google rating and availability: 5.0★ from 11 Google reviews, open 24/7.
#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 317 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 |
|---|---|---|
| ALLCONCRETE LTD | 4.7★ (66) | In East Gwillimbury |
| Black Forest | 4.8★ (532) | In East Gwillimbury |
| Build for You | 4.7★ (12) | In East Gwillimbury |
| DQ Renovations | 5.0★ (10) | In East Gwillimbury |
| Elite Ceilings Drywall Repair Services | 4.4★ (13) | In East Gwillimbury |
| Fox Services | 5.0★ (22) | In East Gwillimbury |
| Gorilla Insulation- Spray Foam and Drywall | 5.0★ (22) | In East Gwillimbury |
| Green Machine Inc | 4.9★ (35) | In East Gwillimbury |
| IPN Construction | 5.0★ (11) | In East Gwillimbury |
| JP Concrete Solutions | 5.0★ (61) | In East Gwillimbury |
| Mars kitchen cabinet | 5.0★ (42) | In East Gwillimbury |
| Mokdad Contracting Inc. | 4.9★ (27) | In East Gwillimbury |
| Moldtech Inc - Mold Inspection and Mold Removal Company | 5.0★ (32) | In East Gwillimbury |
| NAVOTE HOME IMPROVEMENT INC | 5.0★ (17) | In East Gwillimbury |
| Northern Building Services - Masonry - Newmarket, Richmond Hill, Markham | 5.0★ (17) | In East Gwillimbury |
| Remove My Walls | 5.0★ (69) | In East Gwillimbury |
| Renomar Inc | 5.0★ (17) | In East Gwillimbury |
| SONCE HOMES | 5.0★ (51) | In East Gwillimbury |
| TPM construction | 4.6★ (53) | In East Gwillimbury |
| Yorkland Homes | 5.0★ (81) | In East Gwillimbury |
US national ranges converted to CAD, not adjusted for East Gwillimbury. 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 317 East Gwillimbury foundation repair companies on 8 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. Unknown factors are left out of the score, 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 East Gwillimbury data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |