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5 Best Underpinning Contractors in Toronto (2026)

Ranked by real Google ratings and review volume · How we chose

Brad Smith
By Brad Smith, Home Services Expert · ✓ Updated · 8 min read

We compared 18 underpinning contractors in Toronto on Google Maps · 5 listed · How we rank

Lowering a basement floor means digging out from under a house that is still standing on top of you, which is why the choice of underpinning contractors in Toronto matters more than the quote. The companies on this page hold more than 470 Google reviews between them and every one is rated 5.0, so the stars won't settle it. What does is the job: a full dig-out and new footings, a cheaper bench, or underpinning bundled with waterproofing and a finished floor.

Short answer: The top pick for underpinning in Toronto is Waterproofing PD (5.0 from more than 180 Google reviews), a family-owned company serving Toronto and the GTA that offers basement underpinning, basement lowering, bench underpinning, waterproofing and sump pumps from one licensed crew. IcyReno is an underpinning specialist, with engineer-approved basement lowering and pricing that starts from $70/ sq. ft. VMB Group says it has been underpinning basements across Toronto and the GTA for over 20 years.
Jump to a business

Toronto Basement Underpinning Companies, Side by Side

# Business Rating Reviews Best for
1 Waterproofing PD 5.0 ★ 183 Underpinning plus waterproofing from one crew View ›
2 IcyReno 5.0 ★ 30 Engineer-approved basement lowering View ›
3 VMB Group 5.0 ★ 97 Engineered underpinning built by its own crews View ›
4 The Foundation Kings Ltd. 5.0 ★ 93 Underpinning with additions and laneway foundations View ›
5 Drobot Construction 5.0 ★ 70 Residential underpinning and laneway foundations View ›
5 Best Underpinning Contractors in Toronto (2026)

The shortlist, reviewed

Waterproofing PD logo
★ Featured Partner#1 Overall🕑 Open 7 days

Waterproofing PD

5.0183 Google reviews

Waterproofing PD is a family-owned, fully licensed and insured basement company serving Toronto and the GTA. Its underpinning work sits alongside a long menu: basement underpinning that deepens footings to add headroom, basement lowering for full ceiling height, bench underpinning that adds height faster than a full underpin, and basement slab replacement with fresh drainage and a vapour barrier underneath.

The same crew handles interior and exterior waterproofing, sump pumps, egress windows with wall cutouts, foundation repair and parging. Interior waterproofing starts from $64 and exterior from $100 per linear foot, and the company helps homeowners claim the City of Toronto subsidy. Seniors and first responders get a discount, and the shop runs long hours, open until 8:30 PM on weekdays with Saturday and Sunday hours as well.

What people praise

  • Full underpinning, bench underpinning and basement lowering offered together
  • Waterproofing, sump pump and slab work handled by the same company
  • Customers describe work done cleanly and on time
  • Reviewers mention organized crews and careful handling of the basement
  • Open evenings and weekends, which suits homeowners who work days
Reputation scorecardrank in Toronto
Rating5 / 5
Review volume183 · 94th
Confidencehigh
Recency2 months ago
Info completenesssite · phone · hours
Rating breakdown98% 5-star
✓ VerifiedSource: Google

Our take: Waterproofing PD suits a homeowner who wants the footings deepened, the walls sealed and the floor replaced under one contract. It holds a 5.0 from more than 180 Google reviews, and customers describe tidy, punctual work and a basement that felt secure afterwards.

3200 Wharton Way, Mississauga, ON L4X 2C1

IcyReno logo
★ Featured Partner#2🕑 Open 7 days

IcyReno

5.030 Google reviews

IcyReno is a Toronto basement underpinning and lowering contractor working from Carlaw Avenue, in business since 2009. Its pitch is taller, safer basements: underpinning that extends a home's footings below the existing foundation to raise ceiling height, reinforce old foundations and create legal, livable space. The work is engineer-approved and permitted through the City of Toronto, and the company is bonded, insured and licensed.

IcyReno explains the choice plainly. Underpinning is the engineered method, basement lowering is the result homeowners want, and benching is a cheaper alternative that keeps the original footing but gives up floor space. Underpinning starts from $70/ sq. ft., with a free on-site quote. It also does basement waterproofing, drain repair and membrane work.

What people praise

  • Underpinning is the core business, not a side service
  • Customers describe arriving on time, communicating well and finishing with great care
  • Smooth, well-managed projects with steady updates
  • Waterproofing jobs completed efficiently, with several reviewers recommending the company
  • Free on-site quote
Reputation scorecardrank in Toronto
Rating5 / 5
Review volume30 · 47th
Confidenceearly
Recency5 weeks ago
Info completenesssite · phone · hours
Rating breakdown100% 5-star
✓ VerifiedSource: Google

Our take: IcyReno is an underpinning specialist first, and it explains underpinning, lowering and benching in terms a homeowner can compare. Its 5.0 from more than 30 reviews is backed by customers who praise the communication and the care taken on site.

235 Carlaw Ave Ste 501, Toronto, ON M4M 2S1

VMB Group logo
#3🕑 Open 6 days/wk↩ Responds to reviews

VMB Group

5.097 Google reviews

VMB Group is an Etobicoke contractor on Six Point Road that says it has been underpinning basements across Toronto and the GTA for over 20 years. It describes each project as engineered, permitted by the City of Toronto and built by its own crews, from excavation through to the finished concrete floor.

Its services run in sequence: drawings and permits, basement lowering with new concrete footings and extended walls, inside waterproofing with a sump pump, and basement finishing once the floor is down. Its Google profile also lists concrete contractor and general contractor work, and one reviewer praised a basement walkout.

What people praise

  • Handles drawings, permits, excavation, waterproofing, concrete and finishing
  • One reviewer went from a wet 6'2 basement to a dry 8'3 one, with nothing over the original quote
  • Project updates shared through a project app, according to one customer
  • Concrete work that a reviewer's subcontractors and inspector called some of the best they had seen
  • A double underpin on a 70 year old house completed without problems, per one customer

Worth knowing

  • Open weekdays and Saturday daytime only, so book visits around office hours
Reputation scorecardrank in Toronto
Rating5 / 5
Review volume97 · 92nd
Confidencemoderate
Recency8 months ago
Info completenesssite · phone · hours
Rating breakdown99% 5-star
✓ VerifiedSource: Google

Our take: VMB Group is the choice for a homeowner who wants the whole sequence, from permit drawings to a finished basement, run by one company. Reviewers praise clear options, on-time work and quotes that held.

84 Six Point Rd, Etobicoke, ON M8Z 2X2

The Foundation Kings Ltd. logo
#4🕑 Open 6 days/wk↩ Responds to reviews

The Foundation Kings Ltd.

5.093 Google reviews

The Foundation Kings Ltd. is a Toronto construction company, and its reviews describe foundation-first work: basement underpinning, a new walkout, a home addition and the foundations for a laneway house. Customers name Jamie as the person who coordinates the job and manages the crew from start to finish.

Reviewers also describe larger, whole-basement projects that came out of the underpinning, including 8 ft ceilings, a new steel beam with fewer posts, waterproofing, heated and insulated floors, a sump pump, new drains and a backflow valve.

What people praise

  • Clear, frequent communication, with Jamie named repeatedly
  • Customers say the crews are tidy, efficient and hardworking
  • Projects handled hands-off, with the company arranging the trades
  • One underpinning finished ahead of schedule, another on time and on budget
  • Creative solutions when an old brick house threw up surprises
Reputation scorecardrank in Toronto
Rating5 / 5
Review volume93 · 86th
Confidencemoderate
Recency7 months ago
Info completenesssite · phone · hours
Rating breakdown100% 5-star
✓ VerifiedSource: Google

Our take: The Foundation Kings suits a homeowner pairing underpinning with an addition, a walkout or a laneway build, and who wants one person coordinating. Its ranking rests on a clean 5.0 across more than 90 reviews, with several customers recommending it for underpinning specifically.

34 Minowan Miikan Ln, Toronto, ON M6J 0G3

Drobot Construction logo
#5🕑 Open 6 days/wk↩ Responds to reviews

Drobot Construction

5.070 Google reviews

Drobot Construction is an Etobicoke concrete and foundation contractor on Burlington Street, presenting itself as underpinning experts across the Greater Toronto Area. Its site lists laneway foundations, underpinning, waterproofing, sump pumps and concrete work, and says it has more than 20 years of experience. It also lists licensed and insured status, a free estimate and a premium warranty.

Reviews back up the range. Customers describe residential underpinning on a 100-year-old house, a reinforced foundation wall, basement waterproofing, a laneway foundation and slab, and the foundations for a new garage and cabana.

What people praise

  • A six week underpinning delivered to the day, per one customer who lived upstairs throughout
  • Clean, safe job sites with very little damage in a lived-in house
  • Help understanding the City rebate process step by step, according to one reviewer
  • Competitive pricing mentioned across several reviews
  • A foundation wall reinforced and a flooding problem solved
Reputation scorecardrank in Toronto
Rating5 / 5
Review volume70 · 75th
Confidenceearly
Recency3 months ago
Info completenesssite · phone · hours
Rating breakdown100% 5-star
✓ VerifiedSource: Google

Our take: Drobot is the pick for a family staying in the house during the dig, with reviewers praising the schedule and the clean-up. One reviewer who has now used two underpinning companies called it a much better experience than the first.

46 Burlington St, Etobicoke, ON M8V 2L2

6

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What the scorecard measures

Every number on this page is computed from public Google data on the date shown, not from opinion. Rating is the live Google star average. Review volume is how many customers have rated the business, compared with other Toronto underpinning contractors. Confidence weighs the rating by that volume, so a 5.0 from hundreds of reviewers carries more weight than a 5.0 from a few dozen. Recency reflects how recently customers still leave reviews. No business can pay to change these numbers.

What drives underpinning costs in Toronto? (2026)

Underpinning is priced by the area being lowered, so depth, footing condition and access to the house drive the quote. Waterproofing, a sump pump, new drains, a finished slab and any engineering or permit work are often added on top. Ask each contractor for a written, itemized quote after an in-person visit, and for the engineer’s drawings, rather than accepting a phone price.

Underpinning across Toronto and the GTA

The companies above work from Mississauga, Etobicoke, Carlaw Avenue and the west end, and customers describe projects in Toronto, Mississauga and across the GTA. Looking for an underpinning contractor near me? Each listing shows a live phone number and directions, so you can call the office closest to your house.

What to ask before hiring a basement underpinning company

  • Will an engineer prepare and stamp the drawings, and who applies for the City permit?
  • Is the quote for full underpinning, bench underpinning or lowering, and why that method?
  • What is included beyond the footings: waterproofing, sump pump, drains, new slab?
  • How long will the work take, and can we live upstairs while it’s done?
  • How do you protect the rest of the house and the neighbours’ property?
  • Does the written warranty transfer if I sell the house?

Frequently asked questions

What is the difference between underpinning, basement lowering and benching?

IcyReno describes underpinning as the engineered method of deepening a foundation’s footings, and basement lowering as the result homeowners want: a lower floor and more headroom. Benching keeps the original footing and costs less, but gives up some floor space. Waterproofing PD also lists bench underpinning as a way to add height faster than a full underpin.

Can I live in the house during underpinning in Toronto?

One Drobot Construction customer lived upstairs for the whole job and said the crew kept the site clean and safe, with a six week timeline delivered to the day. Ask any contractor how they protect the living space, and how long the work is expected to run for your house.

Who arranges the drawings and permits for underpinning?

VMB Group says it handles drawings from an architect and City of Toronto permits as part of the project, and IcyReno says its engineer-approved work is permitted through the City. Confirm in the contract who applies, who pays and who signs off.

Is there help with the cost of waterproofing after underpinning?

Waterproofing PD says it helps customers claim the City of Toronto subsidy, and a Drobot Construction reviewer said the owner walked them through the City rebate process step by step. Ask your contractor which programs apply to your home.

The bottom line

Waterproofing PD is the safe default for a homeowner who wants underpinning, waterproofing and a new floor handled together, and IcyReno is the specialist to call when the main goal is a lower basement. VMB Group and The Foundation Kings cover the full build, and Drobot is the pick for living through the dig. Whoever you choose, get the scope and warranty in writing.

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