Contractors in Ontario

OG7GES Indigenous Group Inc. is a CCIB-Certified Indigenous Business focused on providing opportunities for First Nation communities, offering services in engineering, procurement, and construction with a commitment to reconciliation.

ON EX Limited is a civil construction company based in Grey County, Ontario, providing excavation services to commercial, infrastructure, agricultural, and residential customers. They focus on collaborative delivery methods and utilizing the latest technology.

Outer Limits Transportation Inc focuses on oversized loads and general haulage, emphasizing old-fashioned customer service. They are equipped with advanced logistics technology and operate across North America, including Alaska.

The Construction Committee mandate is to support the advancement in understanding construction processes associated with treatment and distribution through sharing of knowledge via different stakeholders and presenting them to the industry. Another mandate is to provide mentoring for new professionals. Stakeholders include Owners, Contractors and Consultants, including office and field staff. Processes include the review of contract delivery methods, communications, construction techniques, value engineering, cost bench marking, market analysis, innovations, project controls, change and risk management, partnering, collaboration, close-out, contract administration and resident inspection, health and safety and quality controls.

Oaklen Contracting Ltd. is a family-owned and operated business specializing in essential infrastructure projects, including sewer and water main installations, and subdivision development.

Oakridge Environmental Limited provides expert environmental geology and ecology services for environmentally responsible and sustainable developments throughout Ontario.

Oaktown Paving is a full-service paving contractor specializing in asphalt and concrete solutions for commercial, municipal, and residential projects.

Engineering firm specializing in construction projects, fall protection, construction management, product testing and certification, and unique non-standard problems or projects. They also provide mobile crane services.

The Odyssey Fluid Power Team provides complete rig overhauls, component sales and repair, new rig design and fabrication, field service repair and on-site operator and rig mechanic training.

On Track Safety Ltd. offers complete traffic control solutions focused on higher standards and safer work zones, building partnerships since 1998. The management team and traffic services employees of On Track Safety have played a key role in the Traffic Management of Ontario Freeways and Highways since 1998.

A design-build construction company in the ICI (Industrial, Commercial, and Institutional) sector, focusing on restaurants and hospitality, office, and retail projects.

OneTwo Stop Portable Sanitation Inc. provides portable washroom rentals focused on the construction industry, and also serves the industrial, commercial and residential sectors.

OnSite provides customers with comprehensive outdoor and interior locates for privately owned utilities. They use various active, passive and inductive locate methods to physically locate the horizontal location of private detectable buried utilities.

To offer turn-key solutions for all asset protection needs, including assessment, planning, and installation. They focus on the planning and implementation of turn-key asset protection systems with various products like K-Rated anti-terrorism bollards and safety barriers.

Ontario Building Experts services all sectors of Commercial and Residential buildings from small floor stains to major water disasters and emergency restoration projects. They pride themselves in the most technical knowledge backed by continuous training and certification.

Water is one of our most precious resources. At OCWA, water is our business. We've been operating, maintaining, and managing water and wastewater facilities for 30 years. When you want safe, reliable and cost-effective clean water services, OCWA is a name you can trust.

Ontario Hose Specialties Limited is a distributor of industrial hose, fittings, and accessories. They have multiple branches across Canada and one in Buffalo, New York.

Ontario Refrigeration Service Inc. is a commercial HVAC company specializing in air conditioning, heating, refrigeration, boilers, chillers, exhaust fans, and customized maintenance programs.

Ontario Spill Response Ltd. is a 24/7 full service emergency response spill / Hazmat and environmental contractor. Providing Emergency Spill Response to Highway Traffic incidents, Residential Furnace Oil spills, Commercial and Industrial spills. They also offer IN SITU remediation of petroleum-based contamination, asbestos abatement and hauling, excavations, and demolitions.

Ontario Transway is a trusted freight transport company with over 20 years of experience focusing on reliability, efficiency, punctuality, flexibility, and safety of goods.

Ontario Utility Locates Inc. specializes in providing utility locating services, including private locating, one-call locating and management, dedicated locators, and GPR services. They focus on damage prevention during excavation across Southern Ontario and the Greater Toronto Area (GTA).