40 Largest construction companies in Canada

40 Largest construction companies in Canada

The largest construction companies in Canada serve as testaments to the burgeoning domestic market’s output, which stood at an estimated $291.2 billion USD in 2018.

In this article, we’ll show you the top 40 Canadian construction companies based on revenue, as determined by annual research from On-Site. We’ll also take a close look at the top 10 construction companies in Canada to understand what makes them so gargantuan.

Top 40 largest construction companies in Canada





PCL Construction

$8.4 billion


EllisDon Corporation

$4.4 billion


Aecon Group Incorporated

$3.4 billion


Ledcor Group of Companies

$2.6 billion


Graham Construction

$2.3 billion


Pomerleau Incorporated

$2.3 billion


Kiewit Canada Group Incorporated

$1.9 billion


Bird Construction Incorporated

$1.3 billion


EBC Incorporated

$1 billion


Flynn Group of Companies

$980 million


Stuart Olson Incorporated

$929 million


North American Construction Group

$719 million


Turner Construction Company

$610 million


Clark Builders

$584 million



$572 million


Axiom Builders Incorporated

$550 million


Reliance Construction Group

$550 million


Chandos Construction

$540 million


Magil Construction

$530 million


Taggart Group of Companies

$450 million


Maple Reinders Constructors Limited

$449 million


FWS Group of Companies

$345 million


ConDrain Group

$330 million


Dawson Wallace Construction Limited

$300 million


Govan Brown & Associates Limited

$275 million


Barnard of Canada Incorporated

$245 million


Buttcon Limited

$210 million


Leeswood Construction

$210 million


Delnor Construction Limited

$205 million


Keller Foundation Limited

$200 million


Avondale Construction Limited

$196 million


Wales McLelland Construction

$180 million


Marco Group of Companies

$166 million


Acadian Construction

$157 million


M Builds Construction

$152 million


Bockstael Construction Limited

$136 million


Fortis Construction Group Incorporated

$130 million


Newway Group

$125 million


Fillmore Construction

$115 million


Priestly Demolition Incorporated

$109 million

A closer look at the top 10 construction companies in Canada

Now that you’ve seen the full list, let’s take a closer look at the 10 largest Canadian construction companies based on revenue.

#1. PCL Construction

PCL Construction takes the top spot by quite a large margin, bringing in $8.4 billion compared to the second-largest company’s roughly $4.4 billion.

The company was founded in Saskatchewan by James Martin and Ernest Edward Poole in 1906. Today, it employs more than 4,000 workers and has offices in Canada, the United States, the Caribbean, and Australia.

PCL’s noteworthy projects are almost too many to count, including the ongoing rehabilitation of Canada’s historic West Block building on Parliament Hill and restoration of the nearby Senate of Canada Building.

Beyond building restoration, PCL’s services include procurement, design, and construction management in just about every sector imaginable.

#2. EllisDon Corporation

EllisDon is a Mississauga-based, employee-owned construction company with offices around the world (including 15 in Canada alone).

The company’s roots stretch back to 1951 when brothers Don and David Ellis Smith began performing small renovations.

Today, EllisDon’s projects are anything but small, however. The giant’s notable recent work includes major upgrades to the famous Art Gallery of Ontario and the construction of Brampton Civic Hospital in partnership with a consortium of other firms.

EllisDon pulled in an estimated $4,411,122,000 in 2019, making it undoubtedly one of the most successful Canadian construction companies.

#3. Aecon Group Incorporated

Aecon Group Incorporated boasts more than 12,000 employees and estimated revenues of $3,460,400,000 in 2019.

Just as staggering is the company’s historical provenance, with noteworthy projects including the CN Tower, Gardiner Expressway, and Montreal-Trudeau International Airport.

Aecon operates in several sectors, including civil, transportation, utilities, industrial, and nuclear. It has completed projects in not just North America but South America, Asia, and the Middle East as well.

#4. Ledcor Group of Companies

Ledcor Group of Companies is an employee-owned construction company with primary operations in Canada and the United States. It was founded by a man named William Lede in 1947 and currently employs roughly 6,000 workers.

Notable recent projects include work on the Albian Sands Energy Incorporated expansion in Fort McMurray and 565 Great Northern Way digital media facility in Vancouver.

In 2019, Ledcor’s revenue topped an estimated $2.6 billion.

#5. Graham Construction

Graham Construction is one of the largest construction companies in Canada focused on the industrial and infrastructure sectors. The company got its start in 1926 Canadian Pacific Railway stations in Moose Jaw, Saskatchewan.

Today, Graham Construction works on a variety of projects, with recent portfolio items including the Canadian Armed Forces Military Police Academy in Angus, Ontario and a CFB Trenton Maintenance and Operations Hangar in Toronto.

Graham Construction is an employee-owned firm with several subsidiaries, including Graham Capital, Gracorp, Quinn, and Moltz Construction Incorporated.

#6. Pomerleau Incorporated

Pomerleau Incorporated was founded in 1964 by Hervé Pomerleau. The company grew rapidly throughout the rest of the decade, with revenue jumping from just $18,000 in 1964 to $1.6 million by 1969.

Pomerleau Incorporated’s projects today include the redevelopment of Lansdowne Park in Ottawa and the construction of the Videotron Centre in Quebec City.

Pomerleau Incorporated pulled in an estimated $2,343,000,000 in 2019, firmly cementing its place among the largest Canadian construction companies.

#7. Kiewit Canada Group Incorporated

Kiewit is a truly historic company, having been founded in 1884. It has been one of the largest contenders in the Canadian construction market for more than 75 years, serving sectors such as mining, power, and transportation.

Kiewit has received a number of awards in Canada and is considered one of the nation’s best employers for 2020. Its estimated 2019 revenue of $1,983,264,000 also makes it one of the largest construction companies operating in Canada.

#8. Bird Construction Incorporated

Bird Construction has been a leading force in the Canadian market for more than 100 years. The company’s humble beginnings trace back to Saskatchewan in 1920.

Bird’s current work is focused on sectors such as energy, mining, institutional, retail, residential, and civil construction. Notable recent projects include the construction of the Whitby Rail Maintenance Facility and Avenir Centre.

Bird Construction Incorporated employs more than 1,500 workers and saw an estimated $1,376,408,000 in revenue for 2019.

#9. EBC Incorporated

EBC Incorporated is a Canadian construction company with an emphasis on the major civil engineering, building, and mining sectors. 

Founded by two brothers in 1968, EBC is a leader when it comes to sustainable development in Canada. The Riviére-du-Moulin wind farm is one of many projects EBC has completed in this area.

EBC’s revenue in 2019 was just over $1 billion. The company has more than 2,000 employees and eight offices throughout Canada.

#10. Flynn Group of Companies

Notably, it’s not until the 10th entry on this list that we come across a company with revenues under $1 billion.

The Flynn Group’s estimated 2019 haul of $980,242,000 is still nothing to scoff at, though. The company has been in business for more than 40 years, offering commercial glazing, roofing, and cladding services throughout North America. 

It employs more than 5,000 people and has a staggering number of locations from coast to coast, including in the United States.

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Quick facts about Canada’s construction industry

To help you understand how the Canadian construction companies on this list are capable of achieving such tremendous success, let’s take a quick look at Canada’s construction industry as a whole.

Construction is one of the nation’s most important sectors. It has grown rapidly since the post-war era, pushing through setbacks such as the Great Recession and COVID-19.

Today, according to Canada’s Building Trades Unions (CBTU), construction accounts for 14% of the country’s GDP and employs more than one million people. By 2023, it’s estimated that the Canadian construction industry’s output will exceed $300 billion USD.

Construction is among Canada’s most important and productive industries. We hope this article has provided you with valuable insights into the sector’s key domestic players.

For more content about the construction industry, visit our blog. Lastly, learn more why you don’t need to be technical to be a tech founder and women-led business investments.

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Lauren Lake

Lauren Lake is the COO and co-founder at Bridgit. She holds a degree in Civil Structural Engineering and is well-versed in construction workforce management and resource planning processes. Lauren has been named to the Forbes Manufacturing & Industry 30 Under 30 and Best Of Canada Forbes Under 30 Innovators lists. Lauren has presented at industry events and conferences, including BuiltWorlds, Canadian Construction Association, Procore Groundbreak, and more.

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