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

Handpicked from 195 vetted & reviewed Basement Waterproofing & Crawlspace Repair contractors in the Ajax area, explore the top 5 standout choices among the selected group of 24 finalists.

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Crawford & Son's

(4)

“From the quote to the completion of the job, these guys are top notch. Professional, honest, hard working, friendly, tidy and so much more. Peter explained everything to me during the process and all questions were welcome. They went above and beyond...”

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Northland Paving Toronto

(18)

Quality
Company
Team

“Work was done on time and professionally. Only issue was we thought it was a bit overpriced. We paid extra for piece of mind going with a reputable company.”

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Accl Wet Basement Waterproofing

(8)

Drains, Basement Lowering and Underpinning, Acclwaterproofing.com

“Accl never ceases to amaze me, this company was recommended to a friend of mine they did a great job by salvaging the leaking basement. A thumb up for you ACCL for your professionalism. Keep soaring high.”

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Waterproofing Basements Toronto

(1)

Foundation and Structural Repair, Sump Pump and Backwater Valve, Drain Cleaning and Repair

“Book Now 20% Off”

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Konstruction Group Inc.

(18)

Price
Project
House

“Konstruction Group was an integral part of our home renovation project. Their staff and management who oversaw our the framing and drywalling stages of our project were incredibly easy to work with and responsive to our needs. Their prices were com...”

Best of 2023

Qualification Criteria for best of Winners

Minimum Overall Score

96 (100)

Minimum Reputation Rank

98.8 Percentile

All of our award winners are based on identifiable facts - reviews, performance, and experience - collected by scientific means. We use this data to assess each business’s essential features, weighting them according to their importance to customers.

Read our methodology

Prominent finalists

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Drain Domain

(4)

“Outstanding and knowledgeable service. Billy was very thorough! definingly calling him for all my future plumbing and drain needs. Marilyn”

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Tri-City Roofing & Waterproofing Inc

(4)

Leaf Guard, Seamless Eavestrough, Vinyl & Aluminum Siding

“Kun and his team replaced my roof and my connected neighbor in a single day. He was clear and honest about issues that needed to be addressed with the roof board. He has a growing reputation in my neighborhood for being good at his work and standing ...”

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Restoration Mate

(30)

Home
Efficient
Price

“I would definitely recommend Restoratiin Mate to anyone. Justin and Andrew go the extra mile for their customers They are professional and worth every penny. I have used this company several times (my house is old and has many problems) and will c...”

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Act Fast Waterproofing Corporation

(30)

External Waterproofing, Masonry Services, Crack Injection Sealing

“We had an amazing experience working with Colm. He started his work on time as promised and finished it within time. His approach is very professional and did a very excellent job of waterproofing my basement from outside. I highly recommend him. 10/...”

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City Wide Group

(29)

Leak
Well
Crew

“This was my first experience with City Wide company and they did an awesome job. Responses were quick and everything was done on time. Tony and his crew were friendly and worked very quickly (took less than a day) in fixing the foundation leak. Glad ...”

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Aluneed Ltd

(28)

House
Mind
Price

“Thank you Alex and your team! You guys did an awesome waterproof job in my basement! Your team was amazing!! You were on time and always available when I needed to ask questions. Thank you for cleaning the basement when the work was completed! I real...”

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Chapman Builder's Supplies Ltd

(26)

Delivery
Business
Big Box Stores

“Best place in the city for anything landscaping or masonry! Prices are great and exceptional staff which make it a very positive experience. Deliveries are quick and easy and picking up is great too as staff members load your vehicle for you.”

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Toronto Waterproofing Inc

(13)

Side Walk, Lower Basement, Foundation Repair

“Moses and his team were extremely professional and punctual. They were fair and the cost was the best comparing to the other companies. We highly recommend them.”

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Waterman

(22)

Water Service, Basement Waterproofing, Camera Drain Inspection

“Jim came and solved my issue quickly. Also gave valuable information on what should have happened. Better than the other plumber who gave the song and dance but didn't solve it. Call Jim first, get it done right from the start!”

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Canadian Concrete Leveling

(30)

Deck
Office
Slabs

“Wow! What an incredible difference this work has made to my garage floor! From start to finish the ease of working with Canadian Concrete Leveling has been refreshing to say the least! Professional, personable and dependable! Excellent work, thank ...”

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Maple Leaf Construction

(12)

Waterproofing, Underpinning, Restoration

“I am very grateful to have worked with the team at Maple Leaf for an extended period. They are very serious about growing their teams leadership skills in an effort to provide professional service.”

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1anddonecontracting

(4)

“1AndDone Contracting truly knows how to get the job done right, the first time. The Friendly, knowledgeable team was great from start to finish. Highly recommend their services!”

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Interhome Waterproofing

(9)

Your Trust

“Hi we called interhome water proofing when we had a big leak in our basement. They were only a call away from us. They came right away analyze the problem and waterproof the entire exterior wall. We are very pleased with their service.”

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Brad Duggans Waterproofing Inc

(7)

Window Wells & Egress Window Wells, Sump Pump Installation Button, Interior Waterproofing

“Great service, Great price! Brad and his team are professional, friendly and efficient. I wish all company's were this easy to deal with. They had my leak fixed quicker and cheaper than any other quotes I received. Thanks Brad.”

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RBZ Contracting

(5)

“These guys did a fantastic job sealing up a leak in my foundation. The owner Romeo and his crew where very courteous and polite. I was so impressed with there work I am having them come back when it is warmer to parge the rest of my foundation.”

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Idealwaterproofing

(9)

“I have work done with Dusan ..he is very professional in Water proofing work I recommend him to everyone who have leaking basement problem”

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ASG Construction & Restoration

(3)

“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 !”

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Barakah Waterproofing

(6)

“Very professionals highly recommend 😊😊”

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Bonikar Building Solutions

(2)

“We had a great experience working with them. Will definitely use their services again.”

Average Cost	$6084
Minimum cost	$849
Maximum cost	$16269

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