Based in Ontario, we are a medium sized construction company that has built our reputation on quality workmanship and unprecedented customer service. We have experience across residential, commercial, and industrial sectors with extensive expertise in the retail and financial services sectors. Whether we are working on strategic renovations or extensive multi-million dollar projects, we consistently deliver high-end results with minimal disruptions to our clients and their customers.


Incorporate our highly collaborative team into your internal construction program. Our expertise is extremely valuable to the long-term forecasting and management of all your company’s construction needs. Value Engineering, prequalified bidding, and transparency through an open book approach with our clients is how we guarantee competitive pricing. Trust the construction team tailor made to serve corporations with frequent and complex building needs.


Allow our world class team of Project Managers, Site Superintendents, and tried and tested tradespeople bring your project to fruition. We have built our business on repeat, high-profile customers because we take the headaches out of construction. Elite workmanship standards, rigorous organization methods, guaranteed customer satisfaction, and uncompromising commitment to site safety is how we build.


Are you searching for the right expertise to make your vision a reality? Get in touch with our office and let us take care of the heavy lifting. We have extensive experience in assembling great teams to support our clients no matter what the project entails. From Architects and Engineers, to managers and boots on the ground, our team will work relentlessly and efficiently to breathe life into your project.


At each service level, O.N. Site Construction Inc. employs staff who are expertly trained, highly skilled, and completely committed to surpassing clients’ expectations. As a company we pride ourselves in the quality of our customer’s experience from start to finish, which to us means setting standards that exceed those of our clients in each phase of a construction project. Our holistic understanding of client’s core needs: time, cost, quality workmanship, and reliable service has driven our proud tradition of securing repeat customers and delivering countless, high-quality, turn-key spaces.

In all our work places we are proud to support the Accessibility for Ontarians with Disabilities Act (AODA) and are dedicated to creating and maintaining an accessible work environment for all individuals by removing barriers in the construction industry, and providing an inclusive work environment for all.

O.N. Site Construction Inc. is a proud CAMSC Certified Contractor dedicated to providing an inclusive and diverse community in all aspects of the construction industry.

O.N. Site supports their mission “to champion business relationships and the economic growth of Aboriginal and minority suppliers, through their inclusion in Canadian supply chains.” – The Canadian Aboriginal and Minority Supplier Council (CAMSC)