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Best Foundation Repair Companies in Scarborough, ON (2026)

337 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Scarborough: RCC Waterproofing Toronto, CR Score 65/100; 4.8★ from 634 Google reviews; open 24/7.

  2. 4

    Best for emergencies (open 24/7): RCC Waterproofing Vaughan, posts 24/7 hours; ranked #4 of 337.

  3. 49

    Most-reviewed: New Canadian Drain and Plumbing Ltd, 1,463 Google reviews at 4.7★, the most of 337 ranked; ranked #49.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

337 Scarborough foundation repair companies are ranked here by CR Score, from ten published factors. 135 are open 24/7, 274 open Saturdays and 206 open Sundays, based on posted hours. The median Google rating is 5.0★ across 337 rated businesses.

Top 10 foundation repair companies in Scarborough at a glance

Top 10 foundation repair companies in Scarborough at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1RCC Waterproofing Toronto654.8★ (634)Toronto, 14 km away24/7Overall
2Groundworks654.9★ (1,412)East Gwillimbury, 20 km awaySat · Sun · Evenings—
3Aquatech Basement Waterproofing Toronto645.0★ (655)Toronto, 20 km awaySat · Sun · Evenings—
4RCC Waterproofing Vaughan624.9★ (180)Concord, 26 km away24/7Emergencies
5Aquamaster Basement Waterproofing Toronto624.9★ (274)Toronto, 18 km awaySat · Sun · Evenings—
6City Wide Group624.8★ (177)East York, 8 km awaySat · Sun · Evenings—
7Direct Basement Waterproofing Toronto615.0★ (271)Toronto, 28 km awaySat · Sun · Evenings—
8Dryshield Waterproofing Toronto614.9★ (245)North York, 24 km awaySat · Sun · Evenings—
9Aquatech Waterproofing615.0★ (78)Vaughan, 25 km away24/7—
10RCC Waterproofing North York614.9★ (77)Toronto, 22 km away24/7—

The 337 best foundation repair companies in Scarborough, ranked

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.

  2. #2 Groundworks

    Based in East Gwillimbury, 20 km away

    65/100CR Score

    Ranked #2 because of its Google rating and trade focus: 4.9★ from 1,412 Google reviews, listed on Google as “Waterproofing service”.

    • 4.9★ from 1,412 Google reviews
    Hours
    Mon–Fri 7 AM–11 PM · Sat 8 AM–11 PM · Sun 10 AM–11 PM
    Address
    12029 McCowan Rd, Whitchurch-Stouffville, ON L4A 7X5
    View profile for Groundworks(365) 363-9900

  6. #6 City Wide Group

    Based in East York, 8 km away

    62/100CR Score

    Ranked #6 because of its Google rating and trade focus: 4.8★ from 177 Google reviews, listed on Google as “Waterproofing service”.

    • 4.8★ from 177 Google reviews
    Hours
    Mon–Sat 8 AM–8 PM · Sun 9 AM–3 PM
    Address
    25 Hollinger Rd #3, East York, ON M4B 3N4
    View profile for City Wide Group(416) 283-5500

  11. #11 Stay Dry Waterproofing

    Based in North York, 22 km away

    61/100CR Score

    Ranked #11 because of its Google rating and trade focus: 4.8★ from 97 Google reviews, listed on Google as “Waterproofing service”.

    • 4.8★ from 97 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    168A Oakdale Rd Unit 7, North York, ON M3N 1V9
    View profile for Stay Dry Waterproofing(416) 782-9379

  15. #15 ROOTERWORX

    Based in Mississauga, 37 km away

    61/100CR Score

    Ranked #15 because of its Google rating and trade focus: 5.0★ from 121 Google reviews, listed on Google as “Waterproofing service”.

    • 5.0★ from 121 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    34 Queen St W unit 4, Mississauga, ON L5H 1L4
    View profile for ROOTERWORX(416) 400-2685

  16. #16 Canada Waterproofers

    Based in Mississauga, 39 km away

    61/100CR Score

    Ranked #16 because of its Google rating and trade focus: 5.0★ from 316 Google reviews, listed on Google as “Waterproofing service”.

    • 5.0★ from 316 Google reviews
    Hours
    Mon–Sat 7 AM–9 PM · Sun 10 AM–4 PM
    Address
    3410 Semenyk Ct #9, Mississauga, ON L5C 4P8
    View profile for Canada Waterproofers(905) 270-5325

  22. #22 ESK Waterproofing

    Based in Toronto, 9 km away

    60/100CR Score

    Ranked #22 because of its Google rating and trade focus: 4.6★ from 35 Google reviews, listed on Google as “Waterproofing service”.

    • 4.6★ from 35 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    10 Grenoble Dr, Toronto, ON M3C 1C6
    View profile for ESK Waterproofing

  24. #24 Water Pro Group - Plumbing | Drain Repair & Drain Cleaning | Drain Backup | Main Drain Repair

    Based in Mississauga, 34 km away

    60/100CR Score

    Ranked #24 because of its Google rating and trade focus: 5.0★ from 70 Google reviews, listed on Google as “Waterproofing service”.

    • 5.0★ from 70 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1251-A Kamato Rd, Mississauga, ON L4W 2M2
    View profile for Water Pro Group - Plumbing | Drain Repair & Drain Cleaning | Drain Backup | Main Drain Repair(647) 554-4356

  25. #25 PRIME Waterproofing

    Based in Mississauga, 34 km away

    60/100CR Score

    Ranked #25 because of its Google rating and trade focus: 5.0★ from 161 Google reviews, listed on Google as “Waterproofing service”.

    • 5.0★ from 161 Google reviews
    Hours
    Mon–Sat 7 AM–9 PM · Sun 8 AM–9 PM
    Address
    3453 Cedar Creek Dr, Mississauga, ON L4Y 2Y2
    View profile for PRIME Waterproofing(647) 629-3756

Foundation repair companies ranked #26 to #50

#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 337 ranked foundation repair companies here; the rest are on their profiles.

foundation repair companies in Scarborough, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Sign Waterproofing604.9★ (42)7 km
27Aquatech Waterproofing605.0★ (43)12 km
28Pro-Leak Solutions605.0★ (208)43 km
29Aquatech Basement Waterproofing Etobicoke595.0★ (79)27 km
30Leaky Basement595.0★ (12)11 km
31IcyReno Waterproofing & Underpinning594.9★ (29)28 km
32Aquatech Basement Waterproofing Oshawa585.0★ (49)27 km
33Canada Waterproofers Toronto585.0★ (78)18 km
34DrainCom Basement Waterproofing584.8★ (92)34 km
35Waterproofing my job585.0★ (17)10 km
36GTA EPOXY INJECTIONS584.1★ (17)13 km
37SDM Contractor585.0★ (16)8 km
38WillFix - Basement Underpinning Mississauga584.7★ (34)34 km
39Direct Waterproofing | Basement Waterproofing Scarborough585.0★ (54)In Scarborough
40Royal Work Basement Waterproofing585.0★ (47)34 km
41Dryshield Basement Waterproofing584.5★ (63)22 km
42Aquaphobia Foundation Repair & Crack Injections585.0★ (102)49 km
43FoundationGuard Inc.585.0★ (35)13 km
44Drain 1 Plumbers Inc.574.9★ (288)17 km
45Gord's Basement Waterproofing Ltd574.9★ (33)42 km
46Rooter-Man Drain & Sewer Repair Services Toronto574.8★ (570)25 km
47Waterproof Basement Mississauga575.0★ (41)34 km
48Nelsons waterproofing and masonry574.3★ (6)11 km
49New Canadian Drain and Plumbing Ltd574.7★ (1,463)20 km
50Durham Backhoe Basement Waterproofing575.0★ (67)44 km

Also serving Scarborough

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.

Unranked foundation repair companies serving Scarborough
BusinessGoogle ratingDistance
All Stars Construction Inc.5.0★ (41)In Scarborough
Apex Construction Group4.8★ (16)In Scarborough
Arham Home Builder & Renovator Inc5.0★ (22)In Scarborough
Casacon5.0★ (34)In Scarborough
Dynamic Building Restorations5.0★ (3)In Scarborough
Empire Building Restoration Inc.5.0★ (8)In Scarborough
Gta Roofing and Waterproofing// Toronto Waterproofing5.0★ (2)In Scarborough
Impactt Construction5.0★ (8)In Scarborough
Interhome Construction Inc.5.0★ (5)In Scarborough
Mango Construction and Contracting Inc.5.0★ (15)In Scarborough
Microcement by Adastra Construction Group ~ Stucco & Stone Contractors5.0★ (22)In Scarborough
NexGen Construction5.0★ (17)In Scarborough
Niramaya Constructions Inc5.0★ (33)In Scarborough
OlegHome5.0★ (3)In Scarborough
S.W.P Construction Ltd.5.0★ (24)In Scarborough
St Joseph's Master Construction5.0★ (27)In Scarborough
Structural Restoration Systems5.0★ (9)In Scarborough
TGR Brothers5.0★ (24)In Scarborough
Toronto Renovation Contractor5.0★ (4)In Scarborough
Vanguard Build Limited.5.0★ (12)In Scarborough

How much do foundation repair companies cost in Scarborough?

US national ranges converted to CAD, not adjusted for Scarborough. Each row names its basis and the month we checked it.

How much do foundation repair companies cost in Scarborough?
JobLowTypicalHighBasisChecked
Foundation repairCA$3,130CA$7,270CA$11,430Per 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

How we ranked Scarborough foundation repair companies

We scored 337 Scarborough 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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Scarborough data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Credentials15%Active state license, bond and workers’ comp on fileNot yet collected
Review volume10%Number of Google reviews, compared with the most-reviewed business on the listMeasured
Recency5%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%How clearly the business does this trade (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)Measured
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodicallyMeasured
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there areMeasured

Foundation repair companies in Scarborough: frequently asked questions

Who is the best foundation repair company in Scarborough?

By CR Score, the highest-ranked foundation repair company in Scarborough, ON is RCC Waterproofing Toronto with a CR Score of 65/100. It has 4.8★ from 634 Google reviews. It is open 24/7. Groundworks (#2) and Aquatech Basement Waterproofing Toronto (#3) follow. We ranked 337 foundation repair companies on ten factors, last updated October 22, 2026.

How many foundation repair companies are there in Scarborough?

ContractorsRanked ranks 337 foundation repair companies serving Scarborough, ON. 1 of them is based in Scarborough; the rest serve it from nearby towns. Another 20 within 64 km are listed but not ranked yet. Counts are as of October 2026.

Which foundation repair companies in Scarborough are open 24/7?

135 ranked foundation repair companies in Scarborough post 24/7 hours. The highest-ranked are RCC Waterproofing Toronto (#1), RCC Waterproofing Vaughan (#4) and Aquatech Waterproofing (#9). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which foundation repair companies in Scarborough work on weekends?

274 of 337 ranked foundation repair companies post Saturday hours and 206 post Sunday hours. The highest-ranked open Saturdays are RCC Waterproofing Toronto (#1), Groundworks (#2) and Aquatech Basement Waterproofing Toronto (#3). Posted hours are office hours; crews may book weekend jobs separately.

How much does foundation repair cost in Scarborough?

Foundation repair typically costs CA$3,130 to CA$11,430, with CA$7,270 typical (Per project: typical range of customer-reported repairs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)). This is a national range, not adjusted for Scarborough. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Scarborough foundation repair companies have?

The median Google rating among 337 rated foundation repair companies in Scarborough is 5.0★, with a median of 25 reviews. New Canadian Drain and Plumbing Ltd has the most, 1,463 reviews, and ranks #49. We adjust ratings for review count, so a few five-star reviews cannot top the list.

How does ContractorsRanked rank foundation repair companies?

Each foundation repair company gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.

Do foundation repair companies outside Scarborough count in this ranking?

Yes, if they are within 64 km of the Scarborough city centre, our service radius for foundation repair companies. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.

Update log for Scarborough

  1. October 2026: CR Scores recalculated for 337 foundation repair companies serving Scarborough.
  2. October 2026: 1 duplicate listing merged.

More foundation repair companies and Scarborough pages

Other trades in Scarborough