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Largest Construction Companies in Canada

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Construction activity continues to fuel housing demands and needs for highly-modernized civic and commercial spaces. Construction companies in Canada have hit fresh heights in response, making success in this highly competitive space as elusive as ever. 

The generation-old challenges of the skilled labour shortage have become all too familiar for contractors but have never deterred them from embracing new solutions. According to BuildForce Canada, more than 261,000 workers will retire over the next decade—representing only one-quarter of the 2019 labour force. 

With the growing influence of technology in the construction sector, construction companies in Canada aren’t shying away from reserving dollars to double their capacity through strategic tech on-boarding. On-Site’s annual survey shows how Canada’s builder community once again defied apprehensions to bring value to the economy.

As construction companies in Canada prepare for the steep-growth path ahead, we hand-picked 10 of the biggest construction companies in Canada whose portfolio makes North America an insurmountable global construction power.

1. SNC-Lavalin Group Inc

Darlington Nuclear Generating Station, Source: snc-lavalin.com

When it comes to large construction companies in Canada, SNC-Lavalin Group Inc is king. Headquartered in Montreal, the company specializes in engineering, procurement, and construction (EPC) services across key capacity-enhancing sectors including oil and gas, environment and water, clean power, and mining and metallurgy. It’s the largest in revenue in Canada with over 50,000 employees worldwide and works with a future-forward vision of embedding sustainability and societal trends into their project delivery methods.

Not only is it one of the largest construction companies in Canada; it’s massive on a global scale, too, operating in over 160 countries.

Key Projects:

  • Darlington Nuclear Generating Station
  • New Chaplain Bridge Corridor Project
  • Eglinton Crosstown Light Rail Transit
  • The Canada Line, Delivery and Operations
  • The Confederation Line

2. EllisDon Corp.

Halifax Central Library, Halifax, Source: Wikipedia

EllisDon boasts completing projects worth more than $4 billion over the last 65 years. In addition to being recognized as one of the largest construction companies in Canada, the company has operated in every market sector across the globe. It is committed to environmental reform in construction, and as a result, its executive leaders launched the Carbon Impact Initiative Action Plan to aid Canada’s sustainability commitments on the global stage. For on-ground activation, the company built the Joyce Centre for Partnership and Innovation Building—the first net-zero institutional building and Carbon Impact’s pilot program.

Key Projects:

  • Toronto South Detention for Mimico Correctional Centre 
  • Ottawa Light Rail Transit
  • Halifax Central Library
  • Yorkdale Shopping Centre
  • The University of British Columbia, Advanced Rare Isotope Laboratory (ARIEL)

3. Aecon Group Inc.

Britannia Water Treatment Plant, Source: partnershipsbc.ca

Aecon, befitting of its place on this list of the top construction companies in Canada, has built some of Canada’s iconic landmarks, from the CN Tower to the Halifax Shipyards. As such, it is unsurprisingly considered one of the best construction companies in Canada. Over a century, its predecessor companies enabled construction for hundreds of roads, theatres, book stores, power plants, hotels, factories, and smaller distribution facilities. It has remarkably powered Canada’s transportation and energy industries, contributing to its higher livability index on the global stage. The company has multiple subsidiaries in the infrastructure, high-rise residential and commercial, materials, and energy industries. 

Key Projects:

  • Toronto Rehabilitation Institute, University Centre, Toronto
  • Britannia Water Treatment Plant
  • Bell Creekbank Campus
  • University of Guelph – Science Complex
  • East Windsor Cogeneration

4. Ledcor Group of Companies

Southwest Calgary Ring Road, Source: renewcanada.net

Like many among the top construction companies in Canada, the Ledcor Group of Companies operates primarily in Canada and the United States. Running verticals in major industry and sub-industry sectors, the Group has diversified in the construction of large-scale buildings and civil infrastructure, forestry, mining, property development and management, transportation, marine operations, and energy projects including oil, gas, and Liquefied Natural Gas. It has pioneered the Green Building Industry; the World Architecture News named its VanDusen Botanical Garden Visitors Centre as the Sustainable Building of the Year.

Key Projects:

  • Southwest Calgary Ring Road
  • Air Canada Hangar 5
  • Kearl Lake
  • Albian Sands
  • Nunavut Fiber Optic Deployment 

5. Flynn Group of Companies

Epcor Tower, Source: prioritymechanical.com

Founded in Winnipeg in 1978, the Flynn Group is recognized as one of the best construction companies in Canada specializing in commercial roofing. Mastering the increasing complexity in architectural products, the Group has offered its clients end-to-end building envelopes branching out to roofing and architectural products including contract glazing, curtain wall, and metal panelling. The Group holds a massive presence in the US market as it recently merged with Control Roofing, Baltimore, MD; Dalco Roofing Company, Minneapolis, MN; D&D Roofing, Denver, Colorado; and BRI Commercial Roofing, Dallas-Fort Worth, Texas. 

Key Projects:

  • Denver University
  • Westminster Senior Centre
  • Ryerson Student Centre
  • Stantec Tower E
  • Epcor Tower

6. PCL Constructors Inc.

Ripley’s Aquarium of Canada, Source: bestoftoronto.net

A large network of construction professionals at PCL (Poole Construction Company Limited) deliver added value across diverse portfolios in institutional, residential, commercial, and educational construction projects. Its reputation is akin to a large-scale construction giant that has built many convention centres, hotels, sports facilities, office high-rises, airports, and large-size building renovations.

Among large construction companies in Canada, it is one of the most globally-diversified, with roots in North America, the Carribbean, and Australia.

Key Projects: 

  • The Senate of Canada building
  • True North Square
  • Air Canada Centre
  • Four Seasons Hotel, Cafe Boulud
  • Ripley’s Aquarium of Canada

7. Dawson Wallace Construction

Four Seasons Hotel, Café Boulud, Source: tripadvisor.com

The Edmonton-based construction company has completed projects in Canada’s key growth sectors including restaurants, industrial warehousing, office buildings, schools, banking facilities, retail, and banking and library facilities.

Consistently ranked among the biggest construction companies in Canada, Dawson Wallace Construction Ltd. has won major private and government bids. Awarded one of the bigger bids won by independent contractors in Canada this year, Dawson Wallace attained the design-build contract for Pratts Food Facility’s industrial freezer storage expansion in Alberta, which is Western Canada’s largest independent foodservice distributor.

Key Projects:

  • Amazon, Nose Creek Building E, Calgary
  • Tim Hortons
  • Edmonton Business Campus East, Phase 1, Edmonton
  • St Albert Inn, St Albert, Edmonton, Alberta
  • Home Depot, Alberta

8. Walsh Canada

Los Angeles International Airport, Source: lawa.org

Making it to our list of the largest construction companies in Canada, Walsh is dubbed to be the contractor of choice for clients and the construction employer of choice for employees, Walsh Canada is one of the largest general contracting and design-build firms in North America. The firm is frequently listed in the nation’s Top 15 contractors and runs parallel operations in Canada and the United States working with union subcontractors in the civil, transportation, and building sectors. Revered as a top-notch contractor for all building projects, Walsh has built properties in the commercial, residential, and mixed-use development spaces while also equally committed to its specialized contracts in intelligence analysis, laboratory, warehouse distribution, and correctional sectors. 

Key Projects:

  • Los Angeles International Airport Modernization
  • Veterans Memorial Bridge, Florida
  • Tarrant County College Energy Technology Center
  • Chicago Motor Club – Hampton Inn
  • Maggie Daley Park

9. Acadian Construction

Source: acadianconstruction.com

Acadian Construction is without a doubt one of the biggest construction companies in Canada, clocking over $85 million in sales in the previous financial year. Relatively new to the industry, it has climbed its way to the top in just a few years through innovative design and building approaches in the telecommunications and IT sectors. Providing end-to-end lifecycle management services, the contractor has diverse project teams handling estimating, budgeting, accounting, and comprehensive workplace systems for its clients. The family-run company’s portfolio spreads across retail, restaurant commercial, multi-residential, light industrial and institutional sectors. 

Key Projects:

  • Arena Eugene LeBlanc
  • Centre Arthur-J-Leblanc Centre
  • Chateau Saint John
  • YMCA Community Centre
  • Marriott Hotel, San Jose California

10. Scott Construction Group

London Aviation Centre, Source: londonair.com

Wielding sophisticated tools and a transparent layered approach to building construction, Scott Construction’s focus spans services ranging from pre-construction to post-project maintenance. Its recent acquisition of the JV Driver Group will strategically enhance its capacity and capabilities across key industry growth sectors in Western Canada—its primary market.

Key Projects:

  • London Aviation Centre, London, Ontario
  • UBC Sauder School of Business
  • CBC Radio Canada
  • RBC (Royal Bank of Canada)
  • Christ Church Cathedral Renovation
  • Red Cross Response Centre

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