Contractors in Ontario

MacNamara Fuels specializes in the design, installation, servicing & inspection of fuel storage tanks as well as pumps and controls for emergency generators. They are experts in emergency generators, the Technical Standards & Safety Authority (TSSA), and code and regulation requirements including CSA B-139 & CSA B-149.

MadDash Transport is a Canadian logistics company based in Toronto, specializing in same-day courier services and Less Than Truckload (LTL) transportation.

Maddison Construction Limited is a multi-faceted general contractor and project management company.

Driven to out-perform and deliver the highest standards in service. Specializes in large scale excavation, detailed excavation, environmental remediation, demolition, and management of multi-faceted complex construction projects.

Magnum General Contracting is a general contractor in Toronto specializing in commercial general contracting, design-build, project management, residential developments, and large-scale custom home design-build.

Makwa Development is a 100% First Nation owned company primarily focused in the energy sector. They offer services such as construction, vegetation control, and fabrication.

Makwa and Cahill have joined forces to create Makwa-Cahill Inc., a fully qualified indigenous fabrication company. Focusing on industry fabrication and other strategic work scope opportunities in the energy sector, Makwa-Cahill will work closely with clients in Ontario to create meaningful opportunities for development and employment of qualified trade and professional resources while directly stimulating the local and Provincial economy.

Makwa-Dewar is a full-service general contractor delivering proven performance through a First Nations perspective, blending Indigenous values with technical excellence across a wide range of industrial and infrastructure services. They offer civil construction services to the Power Generation Industry backed over 6 decades of CANDU experience.

Malroz Engineering Inc. is an employee-owned Canadian company offering hydrogeology, geo-environmental engineering, and concrete, soil, and aggregate testing.

Manpower Demolition is a leader in deconstruction and demolition services in North America.

Maple Site Solutions Inc. provides shoring and deep foundation solutions throughout Ontario.

Mar-San Contractors is a leading construction, heavy civil, earth-moving, bulk excavation, grading and demolition company in Ontario. We have been serving the GTA and surrounding areas since 1973.

Marsh Contracting Inc. is a family-owned and operated company with over 25 years of experience delivering clean, cost-effective solutions for underground utility and site work needs.

Maystar General Contractors is a general contractor committed to client satisfaction through project excellence in design, construction, and innovation. They have completed over 200 projects, including complex, high-profile, and LEED-certified projects.

Mazar Construction is a construction management company with over 25 years of experience across North America and the Middle East. They offer general contracting, pre-construction, construction management, and design/build services.

McClay's Transportation is a family-operated transportation provider delivering transportation and logistics services across North America.

McDonald Brothers Construction Inc. is a General Contractor based in the Ottawa area which services primarily the Industrial, Commercial, and Institutional (ICI) sectors. They are known for work with medical facilities, school additions, recreational facilities and complex renovations.

McGuinness Coatings Ltd. is a premier road striping company servicing all of Ontario. They offer pavement marking and removal services.

McIvor Construction Management Inc. is a professional building services company with extensive experience in commercial, institutional, industrial and residential construction projects. They effectively manage the construction process for challenging and complex projects.

McKeil Marine is a Canadian marine service provider specializing in transportation and project services across the Great Lakes, St. Lawrence Seaway, East Coast, and the Canadian Arctic.

McLean Chimney Co. Ltd. specializes in chimney repair and maintenance, offering a range of services including emergency services and scheduled shutdowns.