5 Best Foundation Repair Services in Toronto (2026)

Independently ranked by our review of ratings, reviews and reputation · How we chose

By Brad Smith, Home Services Expert · ✓ Data verified August 2026 · 9 min read

Water coming through a basement wall after a heavy rain is the kind of problem that gets worse the longer it waits. The foundation repair services in Toronto below have logged well over 2,400 Google reviews combined, and the top name alone carries 820 of them at a perfect 5.0, so there's real depth behind these rankings.

Short answer: Aquatech Basement Waterproofing Toronto tops the list at a perfect 5.0 across 820 Google reviews, the largest track record here, with RCC Waterproofing Toronto (4.8, 768 reviews) and Royal Work Basement Waterproofing Toronto (5.0, 451 reviews) close behind. Most jobs start with a free on-site assessment, and pricing depends heavily on whether the fix is interior or full exterior excavation.

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1. Aquatech Basement Wate…
2. RCC Waterproofing Toro…
3. Royal Work Basement Wa…
4. Aquamaster Basement Wa…
5. Direct Waterproofing
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How Toronto's Foundation Repair Companies Stack Up

#	Business	Rating	Reviews	Best for
1	Aquatech Basement Waterproofing Toronto	5.0 ★	820	Whole-home waterproofing, largest crews	View ›
2	RCC Waterproofing Toronto	4.8 ★	768	Fast response, detailed contracts	View ›
3	Royal Work Basement Waterproofing Toronto	5.0 ★	451	Older homes, tricky foundations	View ›
4	Aquamaster Basement Waterproofing Toronto	4.9 ★	280	Interior drainage systems	View ›
5	Direct Waterproofing	5.0 ★	127	Weeping tile and drainage systems	View ›

5 Best Foundation Repair Services in Toronto (2026)

Our top picks, reviewed

#1 Overall🕑 Open 7 days↩ Responds to reviews

Aquatech Basement Waterproofing Toronto

5.0820 Google reviews

Aquatech Basement Waterproofing Toronto handles both interior and exterior basement waterproofing, drainage and water damage restoration, running crews around the clock most days of the week. Reviews describe multi-person teams excavating down to the footings, installing weeping tile, and applying membrane systems like Aqua Block and Dimpleboard, with a lifetime warranty on the work. It's built for larger structural jobs, not just a quick patch.

What people praise

Crews handle full excavation to the footings when a crack requires it
Consultants provide clear, itemized quotes before work starts
Work areas are cleaned and backfilled thoroughly when finished
Lifetime warranty mentioned repeatedly across reviews

Worth knowing

Larger crews mean scheduling around their availability for bigger jobs

Reputation scorecardrank in Toronto

Rating5 / 5

Review volume820 · 98th

Confidencevery high

Recency4 weeks ago

Info completenesssite · phone · hours

Rating breakdown98% 5-star

✓ VerifiedSource: Google

Our take: The most-reviewed foundation repair company in Toronto by a wide margin, with a perfect rating to match. A strong first call for anything from a hairline crack to a full exterior dig.

Website +1416-300-2191 Directions

20 Hyde Ave, York, ON M6M 1J3

#2🕑 Open 7 days↩ Responds to reviews

RCC Waterproofing Toronto

4.8768 Google reviews

RCC Waterproofing Toronto handles foundation crack repair and basement waterproofing, often responding the same day a leak is reported. Reviewers highlight detailed, clearly explained quotes and contracts, and multiple customers mention getting several competing quotes before choosing RCC on price and clarity. The company works crews across multi-day interior waterproofing projects as well as smaller crack repairs.

What people praise

Same-day response reported for active leaks
Detailed, itemized quotes that reviewers say built confidence upfront
Competitive pricing compared to other quotes customers had gathered
Technicians walk customers through the process as the work happens

Worth knowing

A small share of reviews are lower ratings, though the large volume keeps the average high

Reputation scorecardrank in Toronto

Rating4.8 / 5

Review volume768 · 93rd

Confidencevery high

Recency3 weeks ago

Info completenesssite · phone · hours

Rating breakdown93% 5-star

✓ VerifiedSource: Google

Our take: A close second on reviews and rating, and the one to call if you want a detailed written contract before anyone touches your basement.

Website +1416-747-1920 Directions

129 Lytton Blvd, Toronto, ON M4R 1L5

#3🕑 Open 7 days↩ Responds to reviews

Royal Work Basement Waterproofing Toronto

5.0451 Google reviews

Royal Work Basement Waterproofing Toronto handles exterior and interior waterproofing, sump pump installation and drainage on homes across the city, including houses built in the 1880s and 1920s with non-standard footings. Reviewers describe consultants explaining band-aid versus full-repair options clearly, and crews working multi-day jobs including sump pump installs alongside the waterproofing itself.

What people praise

Experience with century-old homes and irregular foundations
Consultants outline both a partial fix and a full repair before you commit
Crews keep worksites clean even on tight, hand-dug jobs
City rebate programs explained as part of the quote

Worth knowing

Some reviewers waited through an insurance claims process before work began, which is outside the company's control

Reputation scorecardrank in Toronto

Rating5 / 5

Review volume451 · 88th

Confidencehigh

Recency2 months ago

Info completenesssite · phone · hours

Rating breakdown99% 5-star

✓ VerifiedSource: Google

Our take: Worth calling if your home is older and past companies have struggled with an irregular foundation. The perfect rating rests on a smaller base than the top two names, so it's a strong option rather than the automatic pick.

Website +1416-837-1077 Directions

230 Queens Quay W, Toronto, ON M5J 2X1

#4🕑 Open 7 days↩ Responds to reviews

Aquamaster Basement Waterproofing Toronto

4.9280 Google reviews

Aquamaster Basement Waterproofing Toronto has worked on basement waterproofing since 2009, focused on interior drainage systems, sump pumps and sealing problem areas rather than full exterior digs. The company backs its work with a 25-year transferable warranty and offers free on-site estimates. Reviews describe technicians explaining the moisture source clearly before recommending a fix.

What people praise

25-year transferable warranty on completed work
Technicians explain the cause of the leak, not just the fix
Interior drainage jobs completed in a single day in several reviews
Consistently rated 4.9 with almost no negative reviews

Worth knowing

A smaller share of reviews mention exterior excavation work compared to the top two names

Reputation scorecardrank in Toronto

Rating4.9 / 5

Review volume280 · 83rd

Confidencehigh

Recency3 months ago

Info completenesssite · phone · hours

Rating breakdown98% 5-star

✓ VerifiedSource: Google

Our take: A strong specialist for interior drainage and sump pump work with a long warranty behind it, though it ranks below the two largest names here mainly on review volume.

Website +1647-846-6367 Directions

371 Front St W Ste 247, Toronto, ON M5V 3S8

#5🕑 Open 5 days/wk↩ Responds to reviews

Direct Waterproofing

5.0127 Google reviews

Direct Waterproofing handles basement waterproofing, concrete and drainage work across Toronto, including weeping system replacement and full exterior excavation. Reviewers describe crews of four or more working through demanding digs, including one job that involved 8 feet of hand-digging in tight spaces between neighbouring houses. The company is a smaller name here by review count but has a perfect rating.

What people praise

Crews handle difficult, tight-access excavation by hand when needed
Jobs consistently finished faster than the original estimate
Sites left cleaner than they were found, per multiple reviews
Every review on file rates the work 5 stars

Worth knowing

Fewer total reviews than the larger companies on this page, so the sample is thinner

Reputation scorecardrank in Toronto

Rating5 / 5

Review volume127 · 78th

Confidencemoderate

Recency5 weeks ago

Info completenesssite · phone · hours

Rating breakdown98% 5-star

✓ VerifiedSource: Google

Our take: A perfect rating and strong reviews on difficult digs make this worth a call, though the smaller sample means it hasn't been tested at the volume the top names have.

Website +1647-693-1096 Directions

2 St Clair Ave W 18th Floor, Toronto, ON M4V 1L5

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Watch: 5 Best Foundation Repair Services in Toronto (2026)

How we score

Every number on this page comes from public Google data on the date shown, not from opinion or payment. Rating is the live Google star average. Review volume is how many customers have rated the company, measured against the other Toronto foundation repair businesses here. Confidence weighs the rating by that volume, so a 5.0 from hundreds of reviews carries more weight than a 5.0 from a dozen. Recency reflects how recently people are still leaving reviews. No business can pay to change these numbers.

How much does foundation repair cost in Toronto? (2026)

Foundation and basement waterproofing costs in Toronto vary widely based on whether the fix is interior sealing, a crack repair, or full exterior excavation with new weeping tile, plus how deep the crew has to dig to reach the footings.

Serving all of Toronto

The foundation repair companies above work across Toronto and the surrounding GTA, including York, East York, North York, Etobicoke and Scarborough. Searching for foundation repair near me? Every listing below shows a live phone number so you can get someone out to assess the damage quickly.

What to ask before you hire a foundation repair company

Is the estimate for interior sealing, a crack repair, or full exterior excavation?
Do you offer a warranty, and is it transferable if I sell the house?
Will you need to dig by hand in tight spaces, and how does that affect the timeline?
Are there City of Toronto rebates I could qualify for on this work?
How will you protect my landscaping, driveway, or neighbouring property during the dig?

Frequently asked questions

How did you choose these foundation repair companies?

We started from foundation and basement waterproofing companies in Toronto with a public Google presence, then ranked by rating, review volume, consistency, and recency. See How we score above.

Are these rankings paid?

No. Rankings come from the public Google data in the scorecard. A business can pay to be a Featured Partner, which adds a badge and top placement, but that never changes another business’s score or position on the underlying data.

How often is this updated?

The data carries a verified date (August 2026 on this page). We refresh listings periodically so ratings and review counts stay current.

Do I need a full exterior dig or just interior waterproofing?

It depends on the source of the leak. Several companies here, including Royal Work and Aquatech, offer both a band-aid interior fix and a full exterior repair, and will walk you through which one actually solves the problem long term.

How much does foundation repair cost in Toronto?

Costs vary widely by scope, from a single crack repair to a full exterior excavation with new weeping tile. Get a written quote from at least two companies before committing, since several reviewers on this page mention comparing multiple estimates first.

The bottom line

Aquatech is the safe default given its size, perfect rating and lifetime warranty, while RCC is worth calling if you want a same-day response and a highly detailed contract. Get at least two quotes before committing to exterior excavation work.

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