How much does basement waterproofing cost in Toronto?

Interior solutions like crack injection or a sump pump system typically run in the low thousands. Full exterior waterproofing, which involves excavating the foundation, adding a membrane and new weeping tile, costs significantly more since it involves digging, disposal, and landscaping repair afterward. Get quotes for both approaches if your basement issue allows it, since the right fix depends on where the water is actually coming from.

How often does a foundation need waterproofing?

A properly installed exterior membrane and weeping tile system is meant to last decades, often 25 years or more, though older clay tile systems can clog or crack over time. Interior fixes like crack injections can need revisiting if new cracks form elsewhere in the foundation, especially in houses with ongoing settling.

What should I expect during an exterior waterproofing job?

Expect excavation along the foundation wall down to the footing, removal or replacement of old weeping tile, application of a waterproof membrane, and backfilling. It's disruptive: landscaping, walkways, or fences near the foundation may need to come out temporarily, and the job can take anywhere from a few days to a couple of weeks depending on access and foundation length.

How do I judge if a waterproofing contractor did quality work?

Ask for photos during excavation showing the membrane and drainage layer before backfilling, since that's the part you can't inspect later. A quality job also includes proper grading away from the house afterward and a written warranty on both materials and labor, not just a verbal promise.

Waterproofing Service in toronto

Waterproofing Service in Greater Toronto Area

Toronto's clay-heavy soil, high water table in older neighborhoods, and freeze-thaw winters put a lot of stress on basements and foundations. Waterproofing covers the work that keeps water out of those spaces: exterior membrane and weeping tile installation, interior drainage systems tied into a sump pump, foundation crack injection, window well and window well drain fixes, and grading or downspout adjustments that keep water moving away from the house. Some of it is preventive, some is a direct response to a wet basement, efflorescence on the walls, or a musty smell that won't go away.

There are 72 waterproofing businesses listed in this category, ranging from small crack-injection specialists to larger crews that dig up the full perimeter of a foundation. Before hiring, ask whether the quote is for interior or exterior work, since they solve different problems and cost very differently. Get a clear scope of what's being excavated or opened up, what drainage layer or membrane product is used, whether a permit is needed for exterior digging, and what warranty covers the workmanship versus the material. Ask to see a recent job with similar soil conditions or house age, and get the warranty terms in writing before any deposit changes hands.

Our ranking weighs how each company handles licensing, warranty terms, response time, and verified customer feedback, so you can shortlist based on more than a sales pitch. See the ranked guide to Toronto renovation contractors for the full list, and check our methodology for how we score and verify each business.

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All waterproofing service in toronto, ranked by score and relevance

We found 72 businesses offering waterproofing service in toronto; 8 met the criteria for the scored directory. The order weighs each business's overall score by how much of its reviewed work is waterproofing service, so a lower-scored specialist can rank above a higher-scored generalist.

Direct Basement Waterproofing Toronto

5.0(127)✓ Google-verifiedPublishes prices

Jack, Sergei, Vlodomir, Greg, and Terry lead crews that arrive on schedule and finish faster than quoted, protecting floors and leaving properties cleaner than they started. Eight years of 5-star reviews show zero leaks return; customers consistently cite honesty about pricing and thorough explanations of work before it begins. Their depth spans exterior and interior waterproofing, weeping tile systems, foundation crack repair, sump pumps, and drainage solutions. Work appears booked a week out; same-day quotes are common. The team protects floors during jobs and handles cleanup as part of their standard process.

Basement Renovation & FinishingEmergency & Quick-Turnaround RepairsWater Damage Restoration Service

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Aquamaster Basement Waterproofing Toronto

4.9(281)✓ Google-verifiedPublishes prices

Aquamaster's strength lies in thorough diagnosis followed by permanent solutions. Inspectors like Roman, Albert, Kevin, and Alex walk homeowners through the actual problem rather than pushing unnecessary work, then crews execute interior drainage, sump systems, and exterior membranes with meticulous grading and cleanup. Named technicians (John, Peter, Mike, Daniel, Andrew, Yurii, Mark) appear consistently across multi-month projects and exterior excavations. One reviewer reported two cancelled appointments; nearly all others praise on-time execution, clean sites, and basements staying dry through heavy storms months later. The business holds Master Plumber and Plumbing Contractor licenses and claims operation since 2009. Their website lists 12 service types from interior waterproofing to foundation underpinning, with published rates starting at $30 per square foot for crawlspace encapsulation and $80–$100 per linear foot for waterproofing. Sump pumps begin at $700 per system. Follow-up and photo documentation appear routine for the crew.

Basement Renovation & FinishingHome Additions & Second StoreysEmergency & Quick-Turnaround Repairs

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All Painting Toronto

5.0(244)✓ Google-verified

Edy and his crew handle interior and exterior painting across condos and homes in the GTA with consistent precision. Reviewers repeatedly praise fast turnarounds, thorough surface prep, protective floor coverings, colour testing, and spotless finishing-traits that have made them a go-to choice for last-minute rentals and home sales alike. Work spans wall and ceiling paint, popcorn removal, drywall repair, floor refinishing, staircase staining, and exterior siding and brick. Staff are named in reviews as responsive and solution-oriented, and the 20-year family business keeps costs competitive while maintaining accountability from estimate to final cleanup.

Kitchen RenovationBasement Renovation & FinishingHome Additions & Second Storeys

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Eastern Western Construction Design & Build Toronto

5.0(71)✓ Google-verified

Across 20 recent reviews, customers consistently report projects completed on schedule with high-quality finishes, clean work areas, and crews that communicate clearly throughout. The team-notably including Yannis-combines technical skill with respect for clients' homes, delivering everything from kitchen and bathroom updates to full renovations and room additions that reviewers say transform and modernize their spaces. Work spans kitchen, bathroom, basement, and whole-home renovations, plus room additions, flooring, drywall, and attic insulation. Reviewers praise fair pricing, reliable timelines, and professional finishing touches. No complaints appear in recent reviews.

Kitchen RenovationBathroom RenovationBasement Renovation & Finishing

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IcyReno Waterproofing & Underpinning Leslieville

5.0(10)✓ Google-verifiedPublishes prices

All ten reviews are five-star, with customers praising efficiency, courtesy, and clear explanations throughout projects. Basement waterproofing work is completed on time with attention to detail, leaving owners confident and satisfied.

Water Damage Restoration ServiceWaterproofing ServiceFlooring Contractor

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FoundationGuard Inc.

5.0(35)✓ Google-verified

FoundationGuard delivers basement underpinning and waterproofing with the speed and precision owners need. Loren and his team respond fast, explain the work clearly, and hit their timelines and budgets consistently. The business handles interior and exterior waterproofing, foundation cracks, and basement lowering across Toronto and surrounding areas. Reviewers from the Beaches to the Annex to Lawrence Park praise the crew's attention to detail, willingness to walk owners through unfamiliar processes, and ability to work alongside other trades without disruption.

Emergency & Quick-Turnaround RepairsWaterproofing ServiceKitchen Renovation

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GTA Restoration Corp.

3.8(25)✓ Google-verified

When the crew shows up, they work fast and know their trade: basement floods cleared in hours, mold removed properly, burst pipes fixed with precision. But reviewers warn the office frequently bills two to three times the initial quote, charges travel time without warning, and leaves customers confused about what labour and equipment actually cost. A few mention language barriers with crews. The pattern is clear: strong fieldwork undermined by billing surprises and poor upfront communication.

Kitchen RenovationBathroom RenovationEmergency & Quick-Turnaround Repairs

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64 low data

CJ Drain & Plumbing (Toronto)

5.0(4)✓ Google-verified

All four reviews are five-star, citing fast response, clear diagnosis, and reasonable costs. Staff like Jimmy and Ricardo treated customers with respect and handled emergencies well, from sewage backups to urgent fixture repairs.

Emergency & Quick-Turnaround RepairsDrainage ServiceFlooring Contractor

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Common questions about waterproofing service

How much does basement waterproofing cost in Toronto?: Interior solutions like crack injection or a sump pump system typically run in the low thousands. Full exterior waterproofing, which involves excavating the foundation, adding a membrane and new weeping tile, costs significantly more since it involves digging, disposal, and landscaping repair afterward. Get quotes for both approaches if your basement issue allows it, since the right fix depends on where the water is actually coming from.
How often does a foundation need waterproofing?: A properly installed exterior membrane and weeping tile system is meant to last decades, often 25 years or more, though older clay tile systems can clog or crack over time. Interior fixes like crack injections can need revisiting if new cracks form elsewhere in the foundation, especially in houses with ongoing settling.
What should I expect during an exterior waterproofing job?: Expect excavation along the foundation wall down to the footing, removal or replacement of old weeping tile, application of a waterproof membrane, and backfilling. It's disruptive: landscaping, walkways, or fences near the foundation may need to come out temporarily, and the job can take anywhere from a few days to a couple of weeks depending on access and foundation length.
How do I judge if a waterproofing contractor did quality work?: Ask for photos during excavation showing the membrane and drainage layer before backfilling, since that's the part you can't inspect later. A quality job also includes proper grading away from the house afterward and a written warranty on both materials and labor, not just a verbal promise.