ConcreteFinderGet Quotes

Rock Bottom Underpinning

Foundations & Underpinning in Islington-City Centre West, Etobicoke

4.183 Google reviews
Works for
homes

Says so on its own site

In business
Claims about 35 years of experience

Says so on its own site

City licence
Cancelled 2019-07-17

City of Toronto register

Paperwork
Says it is licensed and insured

Its own words, unchecked

Rock Bottom Underpinning: concrete work photographed at the business
4 photos

Market rate for foundation and underpinning work across the GTA

$350–$480 per linear foot

Source: Strong Basements. Excludes 13% HST. Not a quote from this company.

Send a free quote request

The form reaches ConcreteFinder by email. It is not sent on to this company.

Mon–Fri
9 a.m.–5 p.m.
Sat–Sun
Closed

Listed for

Its own website also names basement lowering toronto, basement waterproofing toronto, basement renovations toronto, basement underpinning toronto, basement additions toronto, basement walkout toronto and in-floor heating toronto. Read from the company's site, not checked against any register.

From its Google profile: wheelchair-accessible parking lot, washroom.

What the public record shows

Read from registers anyone can search, on the dates shown. Nothing here comes from the company.

City of Toronto business licence
Held in the BUILDING RENOVATOR category until 2019-07-17

Licence T85-4536646, issued 2015-05-27, under the trading name ROCK BOTTOM UNDERPINNING. Read from the register on 2026-09-05, matched on the trading name and the city.

A city licence covers permission to trade in that category. It says nothing about cover, workmanship or how the job will go.

Web address first archived
2012

The earliest copy of this address held by the Internet Archive. A company can be much older than its website, and this is a date about the address only.

ConcreteFinder Score

63 / 100

Scored on the same published method applied to every company on this site. Claiming a listing is free, and no company can pay to move. How the score works

Reviews and reputation
26 / 45
  • Adjusted Google rating13 / 30
  • Review volume13 / 15
What it states on its own site
14 / 22
  • Years going6 / 6
  • Licence and insurance sentences on its own site8 / 9
Website and record
23 / 25
  • Website answered when we checked it10 / 10
  • Themes reviewers keep repeating6 / 6
  • 3 or more project photographs3 / 3
  • Phone on file2 / 2
  • Hours posted2 / 2
The claim
0 / 8

Nothing recorded.

What reviewers keep mentioning

Read from the 8 reviews stored on this record. Each phrase carries the review sentence it came from.

  • Foundations
  • Reliable
  • No surprise charges
  • Finishes quickly
  • Attention to detail
  • Shows up on time

What it states on its own website

Read off Rock Bottom Underpinning's own pages. Nobody checked these against a register.

In business
Claims about 35 years of experience
Says it is
licensed and insured
Says it works for
homes

What customers say

62 of the 83 are 5-star, 3 are 4-star, 1 is 3-star, 2 are 2-star and 15 are 1-star. Ratings are set by the people who left them, not by ConcreteFinder.

  • Kieron

    Rated 5.0 out of 5 · Google review · 10 months ago

    “I had hired another contractor to do underpinning. This other contractor was unable to stay on schedule, wasn't equipped with the right tools, and wasn't giving me any confidence that they were doing the job properly. I contacted Dion at Rock Bottom to rescue me and…”

  • Nadia

    Rated 5.0 out of 5 · Google review · 3 months ago

    “The best service I ever got. The owner of the company came in person before and after the job was done. Great customer service. The job was done fast and the best quality. Very impressive. I would recommend anyone who needs job done fast and headache…”

  • Billy

    Rated 5.0 out of 5 · Google review · a year ago

    “Underpinning my downtown Victorian home with Rock Bottom Underpinning was an exceptional experience. Underpinning a house can be incredibly stressful, and I was initially nervous about the process, but Dion and his crew quickly put my concerns to rest. They ran a tight ship, with every…”

  • Jeff

    Rated 5.0 out of 5 · Google review · 2 years ago

    “I worked with Jamie and the Rock Bottom team to underpin the basement of my 100+ yr old in Leslieville. The overall goal was to dig out my basement to a finished height of 8' 2" (gained over 2 ft of head room). Jamie managed the…”

Where this came from

Everything above is public information, gathered from the sources below and shown with the date it was read. ConcreteFinder does not charge a company to appear, and no company can pay to change what is on this page.

Google Business Profile
Name, address, phone, opening hours, photographs, rating and reviews. Read July 2026.
Rock Bottom Underpinning's own website
Everything on this page introduced by the word “says”, quoted from its pages. Read September 5, 2026.
City of Toronto business licences
The licence number, category and dates shown above. Read September 5, 2026.
Internet Archive
The year this web address was first archived. Read September 5, 2026.

ConcreteFinder checks the website, phone, photographs and hours on this record, and searches the City of Toronto business licence register for companies inside the city. It does not check insurance or WSIB coverage, and no register in this region publishes those. Ask for them before you sign anything.

Last updated: By ConcreteFinder Research Team

Similar pros nearby

The closest 4 other companies listed in the same category.

Comparing quotes? Send yours free

No obligation. We match you with exclusive, local pros, so you compare and choose.

Send a free quote request

Questions about Rock Bottom Underpinning

Is Rock Bottom Underpinning well reviewed?

Rock Bottom Underpinning holds a 4.1-star Google rating across 83 reviews. Based on ConcreteFinder's analysis of Google review data, read the newest reviews first, because a concrete crew changes hands and changes hires. We always recommend comparing at least three quotes before you hire.

Where does Rock Bottom Underpinning operate?

Rock Bottom Underpinning works out of Islington-City Centre West in the Etobicoke area and serves surrounding Greater Toronto Area neighbourhoods. Its listed address is 3, 1750 The Queensway Suite 1206, Etobicoke, ON M9C 5H5.

How do I get a quote from Rock Bottom Underpinning?

You can contact Rock Bottom Underpinning directly or through its website, or through its Google Business Profile.

Before you hire, run through the questions to ask a foundation contractor.

Free quote request