19 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Lambton Shores: Basement Waterproofing Solutions, CR Score 60/100; 5.0★ from 6 Google reviews; open 24/7.
Best for emergencies (open 24/7): RCC Waterproofing London, posts 24/7 hours; ranked #2 of 19.
Most-reviewed: Advanced Basement Systems, 172 Google reviews at 4.9★, the most of 19 ranked; ranked #10.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
19 Lambton Shores foundation repair companies are ranked here by CR Score, from ten published factors. 8 are open 24/7, 10 open Saturdays and 9 open Sundays, based on posted hours. The median Google rating is 4.9★ across 19 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Basement Waterproofing Solutions | 60 | 5.0★ (6) | Lambton Shores | 24/7 | Overall |
| 2 | RCC Waterproofing London | 56 | 4.5★ (20) | London, 61 km away | 24/7 | Emergencies |
| 3 | Power Foundation Systems Ltd | 55 | 4.7★ (52) | Lambton Shores | — | — |
| 4 | Wallace Basement Waterproofing | 55 | 5.0★ (6) | Port Huron, 46 km away | 24/7 | — |
| 5 | ROYAL RESTORATION EPOXY FLOORS & CONCRETE RESURFACING | 55 | 5.0★ (143) | London, 56 km away | Sat · Sun · Evenings | — |
| 6 | Miller Brothers Mini Excavation | 55 | 4.4★ (47) | Sarnia, 34 km away | — | — |
| 7 | Best Plumbing and Drainage Contractors | 54 | 4.8★ (85) | London, 60 km away | 24/7 | — |
| 8 | Jumbo Plumbing | 52 | 5.0★ (35) | London, 60 km away | 24/7 | — |
| 9 | Basement Boss | 51 | 4.6★ (14) | Sarnia, 45 km away | — | — |
| 10 | Advanced Basement Systems | 51 | 4.9★ (172) | London, 61 km away | — | Most reviews |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London, 61 km away
Ranked #2 because of its Google rating and trade focus: 4.5★ from 20 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lambton Shores
Ranked #3 because of its Google rating and review volume: 4.7★ from 52 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Port Huron, 46 km away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London, 56 km away
Ranked #5 because of its Google rating and review volume: 5.0★ from 143 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 34 km away
Ranked #6 because of its Google rating and trade focus: 4.4★ from 47 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London, 60 km away
Ranked #7 because of its Google rating and review volume: 4.8★ from 85 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London, 60 km away
Ranked #8 because of its Google rating and review volume: 5.0★ from 35 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 45 km away
Ranked #9 because of its Google rating and trade focus: 4.6★ from 14 Google reviews, listed on Google as “Waterproofing service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London, 61 km away
Ranked #10 because of its Google rating and review volume: 4.9★ from 172 Google reviews, the most in Lambton Shores.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 40 km away
Ranked #11 because of its Google rating and availability: 5.0★ from 6 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 38 km away
Ranked #12 because of its Google rating and availability: 5.0★ from 5 Google reviews, open 24/7.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London, 62 km away
Ranked #13 because of its Google rating and review volume: 5.0★ from 13 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Ancaster, 63 km away
Ranked #14 because of its Google rating and review volume: 4.9★ from 39 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia, 41 km away
Ranked #15 because of its Google rating and trade focus: 2.7★ from 7 Google reviews, listed on Google as “Concrete contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in London, 63 km away
Ranked #16 because of its Google rating and review volume: 4.7★ from 34 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Marysville, 54 km away
Ranked #17 because of its Google rating and trade focus: 4.3★ from 3 Google reviews, listed on Google as “Concrete contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in London, 58 km away
Ranked #18 because of its Google rating and trade focus: 3.1★ from 9 Google reviews, listed on Google as “Concrete contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in London, 58 km away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Concrete contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
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 |
|---|---|---|
| B-Dry Waterproofing | 52 km | |
| Bob Magee Plumbing | 4.6★ (44) | In Lambton Shores |
| Brosco Concrete | 4.7★ (168) | In Lambton Shores |
| Coldstream Concrete Ltd. | 4.4★ (8) | In Lambton Shores |
| Concrete Sarnia: Concrete Contractors | 5.0★ (1) | 44 km |
| Dpa Contracting Ltd | 5.0★ (2) | 58 km |
| Hunterstone Masonry | In Lambton Shores | |
| JVBC Custom Kitchens & Renovations | 5.0★ (6) | In Lambton Shores |
| Majestic Home Renovations And Improvements | 4.4★ (14) | In Lambton Shores |
| Maxx Contracting Brick Chimney Repairs Waterproofing | 5.0★ (1) | 45 km |
| Middlesex Concrete Forming Ltd | 3.8★ (13) | In Lambton Shores |
| Millworks Custom Carpentry and Stone | 4.8★ (21) | In Lambton Shores |
| Paquette Carpentry | 5.0★ (15) | In Lambton Shores |
| Point-Up Masonry | 5.0★ (2) | 44 km |
| Pranger Construction | 5.0★ (4) | In Lambton Shores |
| Prime Concrete Solutions | 5.0★ (16) | In Lambton Shores |
| Ryco Contracting LTD | 5.0★ (11) | In Lambton Shores |
| ServiceMaster Restore of London | 4.6★ (38) | In Lambton Shores |
| Stopleak Basement Waterproofing | 59 km | |
| We Seal That | 58 km |
US national ranges converted to CAD, not adjusted for Lambton Shores. 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 19 Lambton Shores 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 Lambton Shores 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 |