Best Basement Waterproofing Contractors near Richmond Hill, ON

3 of these contractors are based in Richmond Hill; the others serve Richmond Hill from towns including Toronto (15 km), North York (15 km) and Thornhill (8 km).

5 open 24/7 · 17 open weekends · 22 rated 4.5+ · 7 show a licence

Data verified October 18, 2026

MT Drains & Plumbing LTD

MT Drains & Plumbing LTD

(49)
  • Basement
  • Sink
  • Sump Pump
“The quality of the work done was great, they installed a new window well for us and there was not a single thing left out of place after they were done the work as well as completely explaining everything that they did and the steps they took.”
In Business Since 2010
Free Initial Consultation
Coupons & Offers
Licensed
604 Edward Ave Unit #5, Richmond Hill, ON L4C 9Y7
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Drain Target

Drain Target

(2)
“From the first discussion they were knowledgeable, very professional and efficient.”
In Business Since 2014
Free Initial Consultation
Licensed
44-10 Crown Hill Pl, Etobicoke, ON M8Y 4C6
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Tri-City Roofing & Waterproofing Inc

Tri-City Roofing & Waterproofing Inc

(6)
  • Phone
  • Price
  • Parents
“He discovered other issues with my roof and addressed the most pressing issue ( raccoons had eaten some piping / seal around the vents and posed a serious leak threat) in addition to the original job I commissioned him to complete.”
10+ Years Experience
5 Sorrento Dr, Richmond Hill, ON L4C 0J8
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Masonry Richmond Hill

Masonry Richmond Hill

(5)
  • Company
“These guys did a fantastic job, their prices reasonable, they were on time, efficient and were professional throughout the entire process.”
157 Silverwood Ave Unit C, Richmond Hill, ON L4S
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Drain 1 Plumbers Inc.

Drain 1 Plumbers Inc.

(48)
  • Job
  • Business
  • Project
“Throughout the whole experience, everyone was professional and friendly, and patiently walked me through the work that would be done, answering all my questions.”
Emergency Services
Family Business
Coupons & Offers
718 Wilson Ave, North York, ON M3K
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Harmony Basements

Harmony Basements

(45)
  • Team
  • Project Manager
  • Contract
“We had some interesting discussions throughout the process, what I came away with was appreciation for the open communication, timely updates shared, and when things were not going according to plan - how he went about communicating that and making s...”
Remote Consultations Available
Free Initial Consultation
Offers Financing Options
156 Chrislea Rd #4, Woodbridge, ON L4L 8V1
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The 24 contractors listed for Richmond Hill, ON work on wet basements, foundations and crawl spaces. Warranty claims, free inspection offers and hours come from each company's own website. Ask each one how the proposed repair holds up through frost, because that is where local systems fail.

Area overview: Richmond Hill, ON

The 24 contractors on this page are rated from 4.1 to 5.0 across 3,347 reviews; 19 have 50 or more reviews and 22 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (91%), quality (88%) and responsiveness (81%). The topics that come up most in reviews of the contractors on this page are "price", "efficient" and "estimates". 5 are open around the clock; 17 are open on Saturdays and 14 on Sundays. The services the contractors on this page list most often on their websites are backwater valve installation (3), waterproofing (3), exterior waterproofing (2), foundation (2) and foundation repair (2). 7 show a licence on their websites and 1 lists staff certifications (IICRC). Domain records put 13 websites of the contractors on this page at ten or more years old; the oldest dates from 2004. 7 offer emergency call-outs; 2 offer financing or payment plans; 15 give free estimates; 7 are family- or locally-owned and 3 list coupons or special offers. We count these figures across the contractors on this page; distances are straight-line, and hours and prices change, so confirm the details with the contractor before you book.

How many opinions should I get for a damp problem?

There are 24 listings for Richmond Hill. Get more than one assessment before committing, because diagnoses here differ more than prices do, and one crew's interior system is another crew's regrading and downspout job. Compare what each one says is causing the water rather than the number at the bottom.

Aluneed Ltd

Aluneed Ltd

(48)
  • Team
  • Job
  • Foundation
“They diagnosed the problem with all the necessary tools and instruments, came up with the appropriate plan of actions and executed it within just a couple of days with no empty promises, delays or unnecessary work imposed on you.”
In Business Since 2020
Family Business
Free Initial Consultation
Licensed
Serving Richmond Hill Area
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New Canadian Drain and Plumbing Ltd

New Canadian Drain and Plumbing Ltd

(48)
  • Basement
  • Snake
  • Backwater Valve
“Excellent service he understood our situation since we shut off our water line and needed immediate service, he answered all of our questions and helped us by giving us the proper recommendations, very quick service”
In Business Since 2004
Locally Owned & Operated
Free Initial Consultation
Licensed
184 St Helens Ave, Toronto, ON M6H 4A1
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Canadian Concrete Leveling

Canadian Concrete Leveling

(50)
  • Pool
  • Technicians
  • Foam
“The team from Canadian concrete leveling went above and beyond taking care of customers needs they explained how the product worked, they left the site immaculate clean, I am a general contractor in construction field and my first experience using cc...”
Free Initial Consultation
Locally Owned & Operated
Serving Richmond Hill Area
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Aquatech Basement Waterproofing Toronto

Aquatech Basement Waterproofing Toronto

(50)
  • Job
  • Fair
  • Trench
“The team dug out a deep trench alongside the house, by hand, removed the crumbling brick faces, parged the entire surface, installed water-proofing membrane, and replaced all of the soil and river rock exactly as it was before.”
In Business Since 2013
Free Initial Consultation
Coupons & Offers
Emergency Services
20 Hyde Ave, Toronto, ON M6M 1J3
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Act Fast Waterproofing Corp.

Act Fast Waterproofing Corp.

(50)
  • Basement
  • Leak
  • Rebate
“Colm showed up the same day to look at the issue and then he told me that my basement leak would need to be addressed and fixed from the exterior of my basement and it would not fall under any of the services he offers, however, he still took his tim...”
In Business Since 2012
Free Initial Consultation
2 Red Deer Ave, Toronto, ON M1N 2Y7
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Direct Waterproofing

Direct Waterproofing

(49)
  • Team
  • Contractor
  • Warranty
“He and his team delivered exactly what they said they would, within budget, schedule and took the time to return to the job when the final inspection was needed and make minor adjustments for the next phase of our landscaping project.”
In Business Since 2015
Free Initial Consultation
Licensed
4 Faversham Crescent, Toronto, ON M9C 3X4
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Danar Co. GTA

Danar Co. GTA

(49)
  • Porch
  • Railing
  • Backyard
“Several contractors have approached me before but Daren made me feel at ease with his explanations on how the work would be done, what kind of equipment and materials would they use, when they would start, what kind of quality would we expect, how mu...”
Licensed
Offers Financing Options
Serving Richmond Hill Area
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ADP Toronto Plumbing

ADP Toronto Plumbing

(44)
  • Team
  • Sewer
  • Root
“Andrew has quoted us a fair price, professionally explained new codes in plumbing and draining industry and made recommendations how would be beneficial to use trench free technology to replace sewer line underneath of our front garden without excava...”
In Business Since 2011
Locally Owned & Operated
Emergency Services
51 Homewood Ave #1, Toronto, ON M4Y 2K1
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Canadian Rooter Toronto Plumbing

Canadian Rooter Toronto Plumbing

(48)
  • Team
  • Work
  • Backup
“Andrew and a fellow employee got started and worked from the beginning to the project completion The did not leave one spec of concrete or mess after removing and replacing the concrete and pipes the floor from the front door to the basement was cove...”
In Business Since 2014
Free Initial Consultation
Emergency Services
678 Huron St, Toronto, ON M5R 2R9
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Dryshield

Dryshield

(48)
  • Team
  • Foundation
  • Sales
“Gave me a heads up on how long it would take, I had already known what work was to be done when Tony assessed the work the week before, with his recommendations, he was very informative and gave a fair quote.”
IICRC Certified
60 Millwick Dr, North York, ON M9L 1Y3
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Pro-Leak Solutions

Pro-Leak Solutions

(50)
  • Basement
  • Contractor
  • Peace
“Jody was highly recommended by a co-worker, with his professionalism and friendliness of his work he explained each step of the process, he is very knowledgeable and professional, the job was done very efficiently and everything was cleaned up once d...”
In Business Since 2010
Free Initial Consultation
Serving Richmond Hill Area
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City Wide Group

City Wide Group

(46)
  • Job
  • Leak
  • Reviews
“When we initially discovered the water-leaking issues on our basement, we were confused of the root cause, as none of the other contractors were confident of the actual cause, but then we had the privilege of interacting with Jamie from City Wide ...”
63+ Years Experience
Family Business
Free Initial Consultation
Serving Richmond Hill Area
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Nusite Contractors Ltd.

Nusite Contractors Ltd.

(47)
  • Job
  • Sump Pump
  • Well
“From the first phone call to the company's incredible Office Manager Vanessa, to Justin who got back to me within an hour, came out the next day (working around my schedule), to assess and come up with a solution, and then was able to coordinate with...”
In Business Since 2011
24 Rivalda Rd, North York, ON M9M 2M3
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Oasis Stamped Concrete Inc

Oasis Stamped Concrete Inc

(43)
  • Team
  • Results
  • Walkway
“Professional courteous concrete contractors-Sid came in a timely manner, listened to what we wanted then laid it out conceptually for us to see-He kept the timeframe he gave us, and left our property like he was never there when completed.”
In Business Since 2017
Free Initial Consultation
150 Clark Blvd, Brampton, ON L6T 4Y8
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Stay Dry Waterproofing

Stay Dry Waterproofing

(43)
  • Basement
  • Project
  • Job
“After meeting with different companies' representatives we chose Stay Dry Waterproofing because Domenic and Stephano offered a very efficient solution to our problem, backed by many successful years of experience, as well as excellent warranty terms.”
In Business Since 2015
Emergency Services
Licensed
168A Oakdale Rd Unit 7, North York, ON M3N 1V9
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Pryde. Group Corp. Basement Drains and Waterproofing in Toronto

Pryde. Group Corp. Basement Drains and Waterproofing in Toronto

(32)
  • Team
  • Quotes
  • Camera
“What sets them apart is their commitment to thoroughness—they start work early each morning, maintain continuous progress throughout the day, uphold a vigilant cleanup routine, and leave the job site clean upon completion.”
In Business Since 2021
Free Initial Consultation
Emergency Services
4279 Woodington Dr, Mississauga, ON L4Z 1M1
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Royal Partners Group

Royal Partners Group

(50)
  • Price
  • Quality
  • Shower
“The whole crew were fantastic and professional from start to finish I would recommend them to anyone who's looking to get their basement waterproofed!”
In Business Since 2021
Free Initial Consultation
Emergency Services
Serving Richmond Hill Area
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Three Little Pigs Masonry

Three Little Pigs Masonry

(47)
  • Job
  • Result
  • Concrete
“As an attentive and caring crew, they made aesthetically pleasing, great concrete walkway and steps which are perfectly suited for an elderly member of the family, who had difficulty walking up broken, uneven paving stones that sunk so low below the ...”
50+ Years Experience
Family Business
18 King Street East, Toronto, ON, M5C 1C4
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HomeWaterproofing ContractorsOntarioRichmond Hill, ON

Basement Waterproofing Services in Richmond Hill, ON Cost Estimates

Minimum cost
$852
Maximum cost
$16322
National Average
$6104
$2839
$9225
Fair price range is based on 502 cost profiles
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Average Cost $6104
Minimum cost $852
Maximum cost $16322

Fair range $2839 to $9225 is based on 502 cost profiles.

Why these companies made our list

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