Canada’s construction industry is a cornerstone of its economy, driven by major projects in infrastructure, commercial development, and resource management.
Canada’s construction market is experiencing strong expansion, driven by robust federal investments in transportation, housing, and sustainable infrastructure. In April 2024, the government introduced the USD 4.4 billion Canada Housing Infrastructure Fund to support the development of 750,000 new homes by 2033, alongside an USD 11.1 billion boost to the Apartment Construction Loan Program to enable the creation of 30,000 new apartments.
Top 10 Construction Companies in Canada
Here is our list of the top ten construction companies in Canada for 2025, detailing their primary sectors and major projects.
1. Aecon Group Inc.
Aecon is a national leader in construction and infrastructure development, with a long history of delivering complex projects across Canada. We’ve found they consistently lead the market in both civil engineering and public-private partnerships. Their work includes major transit systems, airports, and energy projects.
2. PCL Construction
PCL Construction is one of North America’s largest and most respected construction companies, with a significant presence in Canada. They are known for their expertise in a wide range of sectors, from commercial buildings and residential towers to industrial and civil projects. We’ve found their dedication to safety and quality is a key reason for their success.
3. Graham Construction
Graham is a major employee-owned construction company that has a strong reputation for delivering projects across various sectors. We’ve noted their particularly strong focus on industrial, infrastructure, and building projects. They are well-regarded for their collaborative approach and strong client relationships.
4. EllisDon
EllisDon is a global construction and building services company with a diverse portfolio that includes everything from commercial and institutional buildings to large-scale infrastructure. We’ve found they are pioneers in adopting new technologies to improve project delivery and efficiency.
5. Pomerleau
Pomerleau is a Canadian construction company that specializes in buildings, civil engineering, and infrastructure. We’ve seen their work on a variety of projects, including commercial and industrial buildings, as well as complex infrastructure for the transportation and energy sectors. They are known for their commitment to innovation and sustainability.
6. Ledcor Group
Ledcor is a diversified group of companies with a large construction arm that operates across Canada and the United States. We’ve noted their extensive experience in telecommunications, oil and gas, and mining, as well as civil and commercial construction. Their broad expertise makes them a major player in the Canadian market.
7. Stuart Olson (now part of Bird Construction)
Following its acquisition by Bird Construction, Stuart Olson has become a key part of one of Canada’s largest construction firms. We’ve found that this merger has created a powerful entity with a diversified portfolio spanning commercial, institutional, and industrial projects.
8. Bird Construction
Bird Construction has a long history of building and civil construction in Canada. We appreciate their focus on delivering a wide range of projects, from commercial buildings and institutional facilities to industrial and mining infrastructure.
9. SNC-Lavalin
SNC-Lavalin is a global engineering and construction firm headquartered in Canada. We’ve found they are a leader in major infrastructure and transportation projects, with a strong focus on engineering design and project management. Their expertise is often sought for large-scale, technically complex public works.
10. Black & McDonald
Black & McDonald is a leading integrated facility services and construction company. We’ve seen their work on a wide variety of projects across the commercial, institutional, and industrial sectors. Their expertise in facility maintenance and management, in addition to construction, makes them a unique and valuable partner.
Summary and Takeaways
The Canadian construction industry is one of the most advanced in the world, with companies leading in innovation, infrastructure, and sustainable building solutions. These top construction firms continue to play a vital role in shaping Canada’s economy and urban development. If you’re interested in exploring more, we’ve also curated detailed insights into the top construction companies in Nigeria and Ghana, and the top construction compaines in the UK offering a broader perspective on how the industry is evolving across different regions.
FAQ
Q: Who is the largest construction company in Canada? A: PCL Construction is Canada’s largest contractor with $9.9 billion CAD revenue and $26.9 billion market capitalization in 2024, operating as North America’s largest employee-owned construction company.
Q: Which construction companies are best for Western Canada projects? A: Graham Construction, Ledcor Group, and Stuart Olson excel in Western Canada with deep regional expertise, established relationships, and understanding of local market conditions and regulations.
Q: What makes Canadian construction companies competitive internationally? A: Canadian companies combine advanced technology adoption, employee ownership models, diverse project experience, harsh weather construction expertise, and strong financial stability making them competitive globally.
Q: How important is regional presence when selecting a Canadian contractor? A: Regional presence is crucial due to varying provincial regulations, climate conditions, labor markets, and cultural requirements – companies like Pomerleau in Quebec demonstrate the value of regional specialization.
Q: Which companies lead in construction technology and innovation? A: PCL Construction and EllisDon Corporation lead in BIM implementation, digital construction methods, and collaborative delivery technologies, driving industry innovation nationwide.
