Canada’s Top 5 Commercial Construction Firms and the Projects They’re Leading in 2025

In today’s fast-paced business environment, staying informed is crucial. Ignoring industry updates can lead to outdated strategies and jeopardize your market share. By monitoring leading companies and trends in commercial construction, you can transform risks into growth opportunities. Embracing flexibility and adaptability is key to success.

This article highlights Canada’s top five construction companies transforming the industry, offering valuable insights to help you thrive. Let’s get started!

How We Selected the Top 5 Construction Companies

We conducted thorough research to identify our list of the top 5 construction companies in Canada, focusing on firms with significant scale, impressive revenues, and large teams that impact the industry. Our evaluation included various projects—commercial buildings, civil infrastructure, and industrial works—to gauge their influence on commercial construction.

In a rapidly evolving industry, we based our findings on the latest data, including figures from 2021 reports up to present. These companies are not just leaders; they are shaping the future of commercial construction.

Our goal is to provide insights to help refine your business strategies, enabling you to make informed decisions and stay competitive in this dynamic market.

The Top 5 Commercial Construction Companies Driving Progress in 2025

In no particular order, here are the five commercial construction companies in Canada that made our list:

1. PCL Construction

PCL Construction, based in Edmonton, Alberta, is Canada's leading employee-owned construction firm. The company employs around 4,500 skilled employees and manages projects worth over $7 billion annually. It excels in commercial construction, civil infrastructure, and specialized projects, contributing to iconic landmarks and essential infrastructure nationwide.

According to a LinkedIn post, PCL will highlight its Specialized Projects team's focus on urgent client needs and large-scale water infrastructure. PCL's Industrial Services provide fast, reliable maintenance and upgrades, while leaders like Walter Schachtschneider champion innovation in AI, automation, and sustainable solar projects.

2. AtkinsRéalis

AtkinsRéalis (formerly SNC-Lavalin), based in Montreal, Quebec, is a leading commercial construction and engineering firm. The company employed approximately 31,000 people and generated $2.5 billion in revenue in the first quarter of 2025. It is known for managing complex infrastructure projects, specializing in transportation networks, energy facilities, and water management solutions.

AtkinsRéalis will prioritize sustainable infrastructure and innovative engineering moving forward. They aim to lead significant initiatives in transit systems, energy optimization, water management, and large-scale industrial projects for a more efficient future.

3. EllisDon

Headquartered in Mississauga, Ontario, EllisDon is a leading employee-owned construction firm in Canada, known for its innovative approaches. With over 4,000 professionals and generating over $5 billion annually, the company manages projects from concept to operation.

Specializing in commercial buildings, civil engineering, and heavy industry, EllisDon plays a crucial role in urban redevelopment and infrastructure. In 2025, they are focused on promoting sustainable practices and affordable housing, while pioneering techniques like modular construction and advanced technologies.

4. Graham Construction

Based in Calgary, Alberta, Graham Construction has led the Canadian construction industry since 1926. With over 2,700 professionals and annual revenues exceeding $4 billion, the company has evolved from railway station construction to delivering diverse projects, including modern commercial buildings, industrial facilities, and major infrastructure.

Graham has been named to WaterCanada Magazine's Top 50 Canadian Water Projects for 2025, marking its second consecutive year. This year's list features standout projects showcasing Graham's expertise in water treatment, stormwater management, flood protection, and its commitment to sustainability.

5. Aecon Group Inc.

Aecon Group Inc., headquartered in Toronto, is a major player in Canada’s construction sector with a history of nearly 150 years. Employing around 12,000 professionals, the company generated $3.9 billion in revenue in 2021 and boasts a backlog of $9.7 billion as of early 2025.

Aecon currently leads transformative projects that showcase its expertise. Notable initiatives include the Annacis Water Supply Tunnel in British Columbia, providing a sustainable drinking water source through innovative deep shafts and tunnels.

In telecommunications, Aecon is enhancing Bell Canada's Gigabit Fibe Service, improving high-speed internet access across the region.

Key Trends Reshaping Commercial Construction Today

As builders, keeping updated with the current trends will benefit you and your bottom line in many ways. Here are a few of them:

1. Sustainable Building Practices: Demand for eco-friendly buildings is increasing. To reduce costs and meet regulations, focus on green certifications, energy efficiency, and sustainable materials.
2. Digital Transformation: Construction is becoming more digital, thanks to tools like Building Information Modeling (BIM) and AI. Invest in these technologies to improve collaboration and efficiency.
3. Modular and Prefabricated Construction: Off-site construction is rising, speeding up project timelines and improving quality—design for modular solutions to enhance efficiency.
4. Supply Chain Resilience: Robust supply chains are crucial. Diversify suppliers and optimize logistics, while focusing on local sourcing and long-term vendor relationships.
5. Workforce Innovation: Invest in skills and technology to adapt to labor changes. Automation creates a supportive environment that promotes teamwork and safety.

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Your Next Move: Use Market Insights for Success

You’ve researched commercial construction, analyzed leading companies in Canada, and identified key industry trends. Now, it's time to turn that knowledge into effective growth strategies.

This information is crucial for contractors to build strong partnerships and enhance bidding processes. Developers can use these insights for project feasibility and partner selection, while architects and engineers can design innovative, energy-efficient solutions to stand out in the market.

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