TL;DR
- Waterproofing PD (Best Overall): A 5/5 HomeStars rating, published starting prices, itemized estimates within 24 hours, and help with the City of Toronto flood-protection subsidy.
- Aquatech Basement Waterproofing: Best suited for homeowners who want a very large review base, BBB A+ accreditation and a price-match guarantee.
- RCC Waterproofing: Best suited for homeowners who value a long company history, the largest HomeStars review count of the three, and in-house financing.
- Ratings, and review counts were checked on 6 October 2026 and change over time.
A wet Toronto basement rarely has a single cause, so basement waterproofing starts with diagnosis. Clay soil, ageing weeping tile, foundation cracks, and overloaded sewers can all push water inside, and the City reports that severe rainfall in 2024 flooded more than 1,000 homes. Choosing a contractor means comparing more than a price per foot. Look at how a company diagnoses the leak, which methods it offers, what its warranty covers, and whether its quote can be compared line by line.
This guide compares Waterproofing PD, Aquatech Basement Waterproofing and RCC Waterproofing. All three offer interior and exterior waterproofing, sump pump work, and foundation services, so the differences come down to reviews, warranty terms, coverage, and pricing transparency.
How We Compared These Companies
We compared the three companies across six criteria: service scope, Toronto coverage, customer reviews, awards, published warranty terms and quotation transparency. All ratings are from HomeStars for consistency. Awards are labelled verified when confirmed on the issuing organisation’s website; otherwise, they are identified as company-stated.
This comparison draws on publicly available review profiles, company websites and official City of Toronto sources. We did not conduct site inspections, obtain quotes or independently test any company’s work.
Side-by-Side Overview
The table summarizes what each company publishes, and what third-party profiles show. Missing information is not a sign of poor service.
| Waterproofing PD | Aquatech Basement Waterproofing | RCC Waterproofing | |
| Best suited for | Best Overall | Large review base and third-party accreditation | Long company history and financing |
| Core services | Interior and exterior waterproofing, crack and foundation repair, sump pumps, underpinning, basement lowering, egress windows, inspections | Interior and exterior waterproofing, crack repair, sump pumps, backwater valves, drain repair, underpinning, basement lowering | Interior and exterior waterproofing, crack and foundation repair, sump pumps, backwater valves, underpinning, basement lowering |
| HomeStars rating (6 Oct 2026) | 5/5 from 148 reviews | 5/5 from 853 reviews | 4.9/5 from 1,054 reviews |
| Verified awards | HomeStars Best of 2024 | HomeStars Best of the Best 2025 and Best of Awards 2026; BBB A+ | HomeStars Best of the Best 2025 and Best of Awards 2025 |
| Published warranty | Transferable lifetime warranty on its Supreme Waterproofing Package (company-stated) | 25-year transferable warranty, described by the company as lifetime (company-stated) | Transferable lifetime warranty (company-stated) |
| Service area | Toronto, Mississauga, Brampton, Vaughan, Richmond Hill, Markham, Oakville, Burlington, Milton and Hamilton | Toronto, the GTA and wider Ontario | Toronto and southern Ontario, including Hamilton, Niagara, London, Oshawa and Barrie |
The 3 Top Basement Waterproofing Companies in Toronto
1. Waterproofing PD – Best overall basement waterproofing
Waterproofing PD is a Toronto basement waterproofing and foundation contractor that says it has operated since 2010, first as Edko Enterprise. It serves homeowners, landlords, property managers, builders and commercial property owners, and its stated approach is to find where water is entering before recommending a fix. From an Etobicoke office, it handles exterior and interior foundation waterproofing, crack repair, sump pumps, basement underpinning in Toronto homes, basement lowering, parging and egress windows, so the crew that diagnoses a leak can also address structural problems found during excavation.
Published starting prices set a baseline before the site visit: interior waterproofing from $64 per linear foot, exterior from $100, sump pump installation from $349 and a wet basement inspection report from $179. The company says estimates are itemized and sent within 24 hours, and it offers a 5% discount for seniors and first responders.
Awards and features
- HomeStars Best of Award Winner 2024.
- Waterproofing PD displays Fully Insured, Toronto City Rebates and WSIB Ontario badges on its website.
- Transferable lifetime warranty. The website attaches it to the Supreme Waterproofing Package, while the company’s HomeStars description mentions a 25-year transferable warranty on waterproofing jobs. A warranty that passes to the next owner can help at resale, so ask which term applies to your package.
- Toronto Subsidy Program. The City’s Basement Flooding Protection Subsidy Program offers up to $6,650 per property for eligible work such as backwater valves, sump pumps and a home plumbing assessment. Waterproofing PD says it lists eligible items separately on estimates and helps with the application.
- Veteran-owned business. The company describes itself as family-owned and veteran-owned. We could not verify this independently.
The company also states that its crews are licensed, insured and covered by WSIB.
What customers say:
Waterproofing PD holds a 5/5 rating from 148 HomeStars reviews (checked 6 October 2026). Recurring themes include clear communication, punctuality and tidy job sites:
“Edgar was incredibly knowledgeable and the team worked incredibly hard.” – Roslin, Scarborough, 5⭐on HomeStars, November 2025
“Clear statement of work, responsible crew, high quality and detailed, very professional including a clean-up afterwards” – (name not displayed), 5⭐on HomeStars reviewer (January 2025)
Why it is our overall recommendation: Waterproofing PD pairs a 5/5 HomeStars rating with published starting prices, fast itemized estimates, subsidy guidance built into the quote and a Toronto-focused service area.
Where It Excels:
- Published starting prices and a low-cost inspection report.
- Waterproofing, foundation and underpinning work from one company.
- Itemized estimates that separate subsidy-eligible work.
Where It Falls Short:
- Its review count is much smaller than Aquatech’s or RCC’s.
- Warranty length is described differently on its website, and HomeStars profile.
- Licence numbers are not published on its homepage, so ask for them.
Best suited for: Toronto-area homeowners and property owners who want a diagnosis-first assessment, an itemized quote and one contractor for waterproofing and foundation work.
Phone: 416-333-8222
Website: https://www.waterproofingpd.ca
2. Aquatech Basement Waterproofing – Best for large review base and third-party accreditation
Aquatech offers interior and exterior waterproofing, crack repair, backwater valves, sump pumps with battery backup, drain repair, underpinning and basement lowering across Toronto, and much of Ontario. Its website publishes a City of Toronto building renovator licence number, a starting-price table and a price-match guarantee for equivalent written quotes from licensed competitors.
HomeStars and the BBB both document Aquatech’s track record. It holds 5/5 from 853 HomeStars reviews (checked 6 October 2026), with reviews posted as recently as September 2026. HomeStars named it the Ontario winner of its first Best of the Best award in 2019, and its current listing shows Best of the Best 2025 and Best of Awards 2026 badges. The Better Business Bureau rates it A+ and lists it as accredited since 2013.
Where It Excels:
- Large, recent HomeStars review base.
- BBB A+ accreditation and a published licence number.
- Price-match guarantee on comparable written quotes.
Where It Falls Short:
- Its warranty is described as both “25-year” and “lifetime,” so confirm the written term.
- Its published Toronto licence is a building renovator licence; under City subsidy rules, that licence type covers sump pumps but not backwater valves, so ask which licence applies to your job.
Best suited for: Homeowners who want an extensive third-party review history and accreditation, and who plan to compare several written quotes.
Address: 20 Hyde Ave, Toronto, ON
Phone: 416-300-2191
Website: https://aquatechwaterproofing.ca
3. RCC Waterproofing – Best for long company history and financing
RCC Waterproofing provides interior and exterior waterproofing, foundation and crack repair, sump pumps, backwater valves, underpinning and basement lowering in Toronto and across southern Ontario. The company says it is family-owned and has operated since 1920, which would make it the longest-running firm in this comparison.
RCC has the largest HomeStars review count of the three: 4.9/5 from 1,054 reviews (checked 6 October 2026). Its current listing shows HomeStars Best of the Best 2025 and Best of Awards 2025 badges, plus a 2018 Giving Back Award. RCC states that every waterproofing project carries a transferable lifetime warranty, and that it offers a price-match guarantee and in-house 0% financing subject to approval.
Where It Excels:
- Largest HomeStars review count of the three.
- Transferable lifetime warranty presented as standard on waterproofing work.
- In-house financing for homeowners who want to spread costs.
Where It Falls Short:
- Its HomeStars average sits slightly below the other two companies’ 5/5.
- Founding date, financing and warranty terms are company-stated, so review them in writing.
- A wide service territory means you should confirm which crew serves your area.
Best suited for: Homeowners who value a long operating history and financing options, including those outside central Toronto.
Address: 4101 Steeles Avenue West, Suite 201, Toronto, ON
Phone: 416-747-1920
What to Ask a Toronto Basement Waterproofing Company Before Hiring
What is causing the leak? Request a written diagnosis, ideally with photos.
Why this solution? Ask why interior, exterior or combined waterproofing suits your foundation and lot.
What is included? Confirm wall length, materials, drainage, sump or valve work, backfill, restoration and daily cleanup.
What is excluded? Check finishes, plumbing, existing cracks and hydrostatic pressure.
Who does the work? Confirm employees or subcontractors, and request liability insurance and WSIB proof.
Which permits apply? Toronto requires a building permit and inspection for a backwater valve before paying a subsidy.
Is the work subsidy-eligible? All contractors and subcontractors need valid Toronto business licences of the appropriate type. Verify through the City’s Business Licence Lookup.
What does the warranty cover? Request written coverage, transfer rules and claim procedures.
FAQ
How much does basement waterproofing cost in Toronto?
Cost depends on the method, wall length, depth and access. Waterproofing PD lists interior work from $64 and exterior from $100 per linear foot, while Aquatech lists interior from $69 and exterior from $90. Treat these as starting points and compare itemized written quotes.
Is interior or exterior waterproofing better?
Exterior work stops water at the foundation wall but requires excavation; interior systems manage water that gets in and usually cost less up front. A proper diagnosis should decide.
Can I get money back from the City of Toronto?
Eligible owners of single-family homes up to fourplexes can receive up to $6,650 per property for items such as backwater valves, sump pumps and a home plumbing assessment. Applications must be submitted within two years of installation, and approval is not guaranteed.
Does a transferable warranty matter?
A transferable warranty matters if you plan to sell, because it documents the work for buyers. Read the transfer conditions before signing.
Does home insurance cover waterproofing?
Standard policies generally treat waterproofing as maintenance, though sudden water damage can be covered. Check your policy with your insurer.
The Bottom line
All three are well-reviewed Toronto-area contractors, so the right choice depends on your basement. Aquatech suits homeowners who want a very large review base, BBB accreditation and a price-match guarantee, while RCC suits those prioritizing longevity and financing.
Waterproofing PD is our Best Overall pick because it pairs a 5/5 HomeStars rating with published starting prices, itemized estimates within 24 hours, subsidy guidance and one crew for waterproofing and foundation work.
Whichever company you shortlist, compare written quotes on diagnosis, scope, exclusions and warranty terms before signing.
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