We are an end-to-end privately owned engineering based mechanical construction and services company with a diverse structure of qualifications, systems and infrastructure which enables us to provide personal attention to our customer's requirements. We value the excellent delivery of all projects, and we bring a whole of life perspective towards your systems performance and energy optimisation in your facility.
Our History
The original firm of T. O’Connor & Sons was founded in 1894 in Topham Street by Thomas O’Connor, as a plumbing and gas fitting company. With the formation of O’Connors in 1999 the brand continues benefiting greatly from the passion of the Managing Director Andrew O’Connor and the discipline of the late Alan Porter. Their drive has led to O’Connors successful involvement in the health, education, retail and defence industries.
The culture of developing our engineers and tradespeople has continued for over a century with many previous T. O’Connor & Sons project engineers and master tradespeople developing the current generation of leaders at O’Connors. At our new premises in Kent Town, our team of engineers, modellers and project managers are delivering new projects for South Australia, and our cohesive onsite teams are ensuring these new buildings are built with efficient mechanical systems for the long term.
At O’Connors, Our Culture Starts with People. Our proudest achievement is that we create a respectful, focused and enthusiastic workplace that enables us to deliver on the more complex projects whilst enjoying the process as a team. We believe every voice matters, and that collaboration fuels both personal development and collective success.
With passion and purpose, we are committed to delivering outstanding results and building long-term, trusted relationships—not just with our clients, but with their buildings too. Our culture isn’t just about getting the job done—it’s about doing it with respect, enthusiasm, and a shared drive for excellence.
Smarter Planning. Seamless Delivery. O’Connors is renowned for expert project planning, including value engineering, services coordination, construction planning, site management, and our internal commissioning skills. We utilise modularisation and prefabrication in the preparation of complex tenders where we seek to streamline timelines and boost efficiency.
Our experienced design team collaborates closely with owners, contractors, architects, and consulting engineers from concept through to the completion. During construction, our team integrates seamlessly with our client teams for success controlling quality, costs and time – while always staying true to the original intent of the project.
With over 25 years of proven expertise, O’Connors leads the way in mechanical services across South Australia. Our designers, engineers and project managers are now amongst the best in the country. Our construction teams comprise indentured tradesmen led by qualified and experienced supervisors who maintain the strict standards of compliance and safety our systems demand and are enabled to link into the respective information and data bases.
O’Connors is at the forefront of technology within the construction and service industry. We have designed, implemented and continue to create new systems that cater to our customer requirements.
Our Building Information Modelling (BIM) unit is an integral part of our construction team. Whether it is a fully documented or a design build job, we utilise the latest technology to help save time and add value. We have been fully committed to the BIM process for over a decade and our passion is demonstrated by our efforts pushing it throughout the industry via our direct involvement with BIM-MEPAUS and our direct employment of drafting and IT professionals.
At O’Connors, Our Culture Starts with People. Our proudest achievement is that we create a respectful, focused and enthusiastic workplace that enables us to deliver on the more complex projects whilst enjoying the process as a team. We believe every voice matters, and that collaboration fuels both personal development and collective success.
With passion and purpose, we are committed to delivering outstanding results and building long-term, trusted relationships—not just with our clients, but with their buildings too. Our culture isn’t just about getting the job done—it’s about doing it with respect, enthusiasm, and a shared drive for excellence.
Smarter Planning. Seamless Delivery. O’Connors is renowned for expert project planning, including value engineering, services coordination, construction planning, site management, and our internal commissioning skills. We utilise modularisation and prefabrication in the preparation of complex tenders where we seek to streamline timelines and boost efficiency.
Our experienced design team collaborates closely with owners, contractors, architects, and consulting engineers from concept through to the completion. During construction, our team integrates seamlessly with our client teams for success controlling quality, costs and time – while always staying true to the original intent of the project.
With over 25 years of proven expertise, O’Connors leads the way in mechanical services across South Australia. Our designers, engineers and project managers are now amongst the best in the country. Our construction teams comprise indentured tradesmen led by qualified and experienced supervisors who maintain the strict standards of compliance and safety our systems demand and are enabled to link into the respective information and data bases.
O’Connors is at the forefront of technology within the construction and service industry. We have designed, implemented and continue to create new systems that cater to our customer requirements.
Our Building Information Modelling (BIM) unit is an integral part of our construction team. Whether it is a fully documented or a design build job, we utilise the latest technology to help save time and add value. We have been fully committed to the BIM process for over a decade and our passion is demonstrated by our efforts pushing it throughout the industry via our direct involvement with BIM-MEPAUS and our direct employment of drafting and IT professionals.
O’Connors is and has been independently ISO-certified by TQCSI to three internationally recognised standards for Quality, Environmental and Safety for over a decade. This reflects our team’s ongoing commitment to working in an environment that is focused on quality, environmental sustainability and safety, and demonstrates our dedication to the delivery of excellence.
Enquire today to discover how O’Connors can assist you in developing a tailored mechanical services solution.
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