Trusted Basement, Foundation & Crawlspace Waterproofing Contractors in Ajax, ON

The highest-rated Basement Waterproofing & Crawlspace Repair companies out of 47 vetted & reviewed in the Ajax area.

Crawford & Son's

Crawford & Son's

(5)
“The crew that came to fix our water issue were so professional and did a amazing job. Every thing was done to our satisfaction and the the clean up was great. They all worked like a team and and were very friendly. GREAT JOB PETER AND CREW,!!! ...”
Free Initial Consultation
In Business Since 2002
170 Fuller Rd #4, Ajax, ON L1S 7G8
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Canadian Concrete Leveling

Canadian Concrete Leveling

(50)
  • Stairs
  • Levelling
  • Results
“Cameron was able to answer my questions about the process and materials that were being used. He was knowledgeable, did a great job and very accommodating. Thank you Cameron!”
Locally Owned & Operated
Free Initial Consultation
Serving Ajax Area
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Northland Paving Toronto

Northland Paving Toronto

(21)
  • Quality
  • Office Manager
  • Product
“I've dealt with Northland 22 years ago. They did a fine job than and I have 2 more places which I required to be done. Also recommend to my next door neighbor.”
Licensed, BBB Accredited
30+ Years Experience
70 Minuk Acres, Toronto, ON M1E 4Y6
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Wrench it Up

Wrench it Up

(49)
Laundry Machine Service, Faucet Services, Water Pump Services
“I have used Wrench it up plumbing on two occasions over the years and both times they exceeded my expectations. Prompt, professional, cost effective and completely trustworthy, They have provided me with a customer experience that is positive in ev...”
Emergency Services
Licensed
In Business Since 2017
390 Progress Ave Unit# 2, Toronto, ON M1P 2Z6
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Aluneed Ltd

Aluneed Ltd

(48)
Drain, Foundation, Waterproofing
“Great customer service.. Alex made me feel really comfortable and I immediately felt that I can trust him. Price is great and the work was clean and quick. Positive Quality”
Family Business
Free Initial Consultation
Licensed
In Business Since 2020
Serving Ajax Area
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Act Fast Waterproofing Corp.

Act Fast Waterproofing Corp.

(50)
External Waterproofing, Masonry Services, Crack Injection Sealing
“Hard working and attention to detail. These guys really care about doing a good job. The owner was right in there working to make sure everything was perfect. Very satisfied and reasonably priced.”
Free Initial Consultation
In Business Since 2012
2 Red Deer Ave, Toronto, ON M1N 2Y7
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Restoration Mate

Restoration Mate

(37)
Radon Testing & Mitigation, Crime Scene Cleanup, Odour Removal
“What an amazing experience... they were fast and affordable. I now have my basement back just like I had it before, all my headaches are gone.They were really friendly too... this has been one of my more pleasant experiences finding a company through...”
Free Initial Consultation
Emergency Services
In Business Since 2019
80 Dynamic Dr Unit 2, Scarborough, ON M1V 2V1
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City Wide Group

City Wide Group

(46)
Blindside Waterproofing Applications, Blocked Main Drains, Basement Lowering | Underpinning
“I contacted Tony Novara at City Wide in the Spring of 2021 for an estimate to waterproof the front of a house we moved into in May 2021. I had gotten a few quotes for the work and CityWide was cost competitive. The Team came two weeks after we confir...”
Family Business
Free Initial Consultation
63+ Years Experience
Serving Ajax Area
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Konstruction Group Inc.

Konstruction Group Inc.

(28)
  • Drywall
  • Insulation
  • House
“Konstruction did a fantastic job framing our project. The team is professional, knowledgable, and willing to work with you through challenging circumstances. Would highly recommend for any job. Positive Responsiveness, Quality, Professionalism”
Free Initial Consultation
1315 Lawrence Ave E #410, Toronto, ON M3A 3R3
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Chapman Builder's Supplies Ltd

Chapman Builder's Supplies Ltd

(42)
“Selection was good and staff were cheerful + attentive. Did a lot of business with them last summer when I renovated my patio and I intend to go back if/when I do any more work in the future.”
4189 Kingston Rd, West Hill, ON M1E 2M5
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Desa Contracting and Restoration

Desa Contracting and Restoration

(15)
  • Electrical
  • Floor
  • House
“I am an assistant property manager for MTCC1407. I highly recommend this company. They provide a fabulous service and excellent customer service. The quality of work is too too and superb.”
Free Initial Consultation
Emergency Services
IICRC, IICRC Certified
In Business Since 2017
145 Royal Crest Ct Unit 15, Markham, ON L3R 9Z4
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Durham Backhoe Basement Waterproofing

Durham Backhoe Basement Waterproofing

(40)
  • Warranty
  • Garden
  • Price
“George and his crew were amazing. They all were polite and knowledgeable. Service was outstanding. Job well done Positive Responsiveness, Quality, Professionalism”
Locally Owned & Operated
Free Initial Consultation
In Business Since 2009
Serving Ajax Area
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Aquaseal Foundation Crack Repair Wet Basement Solutions

Aquaseal Foundation Crack Repair Wet Basement Solutions

(39)
Window Well & Drain, Beam Pocket Leak Repair, Exterior Basement Waterproofing Application
“We used Aquaseal to repair a blocked window well last year on an emergency call. They excavated the area, dug the window well to the proper depth, cleared the drain and made sure that the drain was flowing properly. They were fast, reasonable and di...”
30+ Years Experience
Serving Ajax Area
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Hutchuk's Construction (Hutcon)

Hutchuk's Construction (Hutcon)

(12)
Living (Green) Roof, Demolition, Excavation
“Derek did an amazing job in the Front and Rear of my home. I was extremely pleased with the out come. I would highly recommend him. Positive Responsiveness, Professionalism”
Free Initial Consultation
37 Kawartha Ave, Oshawa, ON L1H 3Y7
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Huameiroofing

Huameiroofing

(3)
  • Property
  • Price
“This is the most cost-effective team in my opinion, and the price is also the best”
Free Initial Consultation
In Business Since 2023
3820 Midland Ave Unit, Scarborough, ON M1V 4S9
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Brad Duggans Waterproofing Inc

Brad Duggans Waterproofing Inc

(13)
Window Wells & Egress Window Wells, Sump Pump Installation Button, Interior Waterproofing
“Brad and his team were really great. We were in really good hands and trusted the quality of his work. He did waterproofing around our home.... excavated, added in weeping tile, membranes, etc. He was always punctual and professional. We feel really ...”
701 Rossland Rd E Suite 633, Whitby, ON L1N 9K3
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Sierra Stone GTA Rubber Stone

Sierra Stone GTA Rubber Stone

(17)
  • Floor
  • Deck
  • Porch
“Kudos to Michelle. Great work and she provided professional service. We had a birthday party coming up and she was able to fit us in. It's nice to deal with a company that cares !”
Free Initial Consultation
In Business Since 2023
Serving Ajax Area
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Tri-City Roofing & Waterproofing Inc

Tri-City Roofing & Waterproofing Inc

(6)
Leaf Guard, Seamless Eavestrough, Vinyl & Aluminum Siding
“Used Tri-City roofing to repair my roof. Good honest dude. Highly recommended. He also replaced my parents roof. Positive Responsiveness, Punctuality, Quality, Professionalism, Value Services Roof repair”
10+ Years Experience
5 Sorrento Dr, Richmond Hill, ON L4C 0J8
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Concrete Markham

Concrete Markham

(1)
Concrete Retaining Walls, Concrete Foundations, Concrete Pool Deck
“Really glad I got a stamped concrete patio and driveway done. These guys were amazing concrete contractors to work with! Positive Responsiveness, Punctuality, Quality, Professionalism, Value Services Driveway installation, Concrete sidewalk building,...”
Free Initial Consultation
10 Radcliffe Rd, Markham, ON L3R 7X7
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Canadian Sanitary Systems

Canadian Sanitary Systems

(14)
Welland, ON, ST Catharines, ON, Peterborough, ON
“I had a sump pump fail at my moms house. Ville De Caries, came over and replaced it very quickly. Pump was better than original. Very impressed. Thanks for helping us out. Services Service not listed”
Licensed
In Business Since 2018
10 Milner Business Ct #300, Scarborough, ON M1B 3C6
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ASG Construction & Restoration

ASG Construction & Restoration

(4)
“Would definitely recommend Gary and his crew. It was just a small job, laying concrete pad for a shed. On time, courteous, did a great job, cleaned up completely on completion and was a good listener !”
Free Initial Consultation
Licensed
In Business Since 2012
Serving Ajax Area
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Barakah Waterproofing

Barakah Waterproofing

(7)
“Very professionals highly recommend 😊😊 … Positive Quality”
200 Gateway Blvd, Toronto, ON M3C 1B5
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Guardian Seal Ltd

Guardian Seal Ltd

(2)
  • Price
“U will not b disappointed with the price and quality of work. Positive Responsiveness, Punctuality, Quality, Professionalism, Value”
Free Initial Consultation
3583 Sheppard Ave E Suite # 316, Toronto, ON M1T 3K8
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Last King Construction Inc

Last King Construction Inc

(11)
  • Porch
  • Contractor
  • Team
“Thanks for doing the interlocking and installing the backyard door for us. We are very happy with your work. Very excellent work and the team is very dedicated. Thanks again and I highly recommend last king construction team. Positive Responsiveness,...”
Family Business
Toronto, ON
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Basement Waterproofing Services in Ajax, ON Cost Estimates

Minimum cost
$849
Maximum cost
$16269
National Average
$6084
$2830
$9196
Typical price range is based on 360 cost profiles
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Average Cost $6084
Minimum cost $849
Maximum cost $16269

Typical range $2830 to $9196 is based on 360 cost profiles.

Why these companies made our list

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