Sectors of activity

Thornhill Capital is a group of companies that combines a broad and deep range of comprehensive solutions that meet our customers’ most complex requirements, from design to completion:

HVAC design and construction services related to all aspects of mechanical and control systems, including maintenance, prevention, project management, construction and systems integration.

Energy efficiency, simulation and certification, energy optimization and decarbonization of buildings and infrastructures.

General contracting, infrastructure, formwork and concrete structures, horizontal and directional drilling, directional drilling, steel casing percussion jacking and other trenchless techniques Project management, construction and installation of treatment equipment for the municipal and industrial sectors.

Construction and installation of sustainable solutions for interception and pumping, biological and physico-chemical treatment, as well as membrane systems for water treatment, and implementation of solutions for biomethanization plants.

Industrial construction, installation, maintenance and repair of components in the boiler-making field, installation of metal structures, industrial piping and management of site mechanics and handling and development of lifting plans for heavy equipment handling.


HVAC / Energy Efficiency

For energy savings and improved building infrastructure

As a mechanical contractor specializing in HVAC (heating, ventilation and air conditioning), piping, refrigeration, energy management, computerized control and preventive maintenance, Kolostat is naturally interested in sustainable development, energy efficiency and improving building infrastructure.

Our professional engineers are dedicated to improving our customers’ profitability, competitiveness and energy independence through the efficient and intelligent use of building mechanics, the latest technologies and ingenuity.

Our approach is based on financially convincing and ecologically rewarding solutions. We use a comprehensive set of tools, processes and strategies to reduce total operating costs and increase building value. What’s more, the solutions we recommend enable companies to reduce their operating costs, improve occupant comfort, reduce their carbon footprint and optimize their investments by maximizing subsidies and rebates.

For effective, innovative energy efficiency projects

Specializing in the design and construction of mechanical systems. KROME puts its innovative expertise at the service of owners wishing to improve their infrastructures, reduce their energy costs and increase the value of their buildings.

Building heating, air conditioning and ventilation systems hold no secrets for KROME! Thanks to a team of dynamic and creative experts, Krome is able to offer owners turnkey projects tailored to their needs. The aim is to modernize customers’ buildings while reducing their carbon footprint.

Whether for multi-residential, industrial or commercial buildings, Krome guarantees a 25-50% reduction in energy costs. Thanks to this guarantee and the securing of all necessary subsidies, renovation projects are rigorously self-financing.

Working in close collaboration with partners (architects, designers, developers, contractors, etc.), KROME always adopts an integrated working method that allows us to combine all our expertise to achieve the best projects.

At KROME, we’re decarbonizing buildings at high speed!


Infrastructure / Water Treatment / Industrial Machinery

For construction projects that meet the highest standards

With over 75 years’ experience and achievements, ALLEN enjoys a solid reputation as a general construction company, mainly in the fields of civil engineering, construction engineering, drilling and mechanical processes.

Driven by a passion for construction, we are committed to excellence in all phases of projects, from design to maintenance management. As a trusted contractor, we deliver projects in line with our customers’ expectations, while adhering to the most stringent industry standards as well as established schedules and budgets.

Driven by the human value involved in each of our contracts and guided by the cultural respect initiated by each of our projects, we add value through the continuous improvement of our processes, the deployment of adapted personnel and the recurrent renewal of our equipment fleet.

Recognized for our professionalism and capacity for innovation, we have established ourselves as a leader in infrastructure work, formwork and concrete structures, horizontal and directional drilling, and the construction and installation of processing equipment for the municipal and industrial sectors.

A leader in industrial construction

Mécanique CNC specializes in the following areas: Boilermaking, millwrighting, structural steel and piping. Mécanique CNC also has its own heat exchanger extractors and specializes in developing lifting plans for handling heavy equipment.

Dedicated and highly qualified, the Mécanique CNC team is at your disposal for installation, maintenance and major repairs in the boilermaking field, among others:

  • Reservoirs
  • Pressure vessels
  • Kettles/Burners
  • Complete dust collection system
  • Furnaces
  • Exchanger maintenance
  • Grinders
  • Rotary furnaces
  • Refraction towers
  • Reactor installation
  • Controlled high-pressure flange tightening
  • ID and FD fans

Respecting the most stringent technical and quality standards, including the constraints of tight schedules, Mécanique CNC executes projects of all sizes in a consistently safe manner, focusing on prevention and training its teams to be at the cutting edge of new health, safety and environmental practices and standards.

From turnkey projects to service calls, from engineering to industrial maintenance, Mécanique CNC takes on all the most complex challenges of industrial construction, ensuring that all projects are undertaken and delivered to the complete satisfaction of its customers.



Olivier Capital Group Inc.

The Olivier Capital Group, founded in 2021 by Jacques Olivier and Thornhill Capital, is an iconic company in the automotive industry. The Group, which has since acquired more than nine car dealerships, has built a solid reputation and become one of the leading players in the Quebec automotive industry.

Honda Magog

Sherbrooke Honda

Ford La Guadeloupe

Kia Sorel-Tracy

Hyundai Sorel-Tracy

Honda Ste-Rose

Hamel Honda

Mazda Laval

Toyota Chomedey


Engineering: providing integrated services from design to implementation

FNX-INNOV, a multidisciplinary engineering company recognized for its innovation and the quality of its technical and technological performance, offering a full range of services in environment, energy, infrastructure, water treatment, building, energy efficiency, industrial and mining engineering, telecommunications, earth sciences and materials engineering.

AXC-Construction, a pioneering company in the field of engineering-construction. By adapting to different markets and developing a global approach, AXC-Construction offers all the engineering and construction services required for the optimal development of specific mandates or turnkey projects.

The S. M. Group International Inc., a multidisciplinary company offering integrated, sustainable and safe solutions for any international project in the fields of energy, telecommunication, infrastructure, building and environment, as an expert engineer, technological solutions integrator or project owner.

Telecom: creating a skills ecosystem

Thornhill Capital has consolidated several telecommunications companies to create a robust entrepreneurial platform. Today, SC360, QuestZone, MDJ Inter-réseautage, Marcomm and Netricom form an ecosystem that employs more than 1,000 people and provides networking and cable installation services.

Insurance: secure and reassure

As a partner of Thornhill Capital, the Assura Group is a consulting firm specializing in tailored insurance, estate planning, asset management, group insurance and benefits solutions.

Agri-food: investment and drive

Thornhill Capital acquired Raymond O’Neil & Sons Fisheries in New Brunswick. Today, the company processes over 6 million pounds of lobster and distributes its products in Canada, the United States, Japan, Europe and Mexico.

Over time, Thornhill Capital has transformed itself to become a company of investors/operators

Today. We analyze. We invest. We operate.

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