In the late 1970s Delta Group was made up of founder and Managing Director Con Petropoulos, a prime mover and an excavator. Today, we are one of the largest diversified contractors of our type in the world – with the scale and systems to mobilise our personnel and plant to meet the demands of any project in any location – metro, regional, remote or marine.

Our triple certified Quality (ISO9001), Safety (ISO45001) and Environmental (ISO14001) Management Systems have been proven over thousands of projects in high risk environments, allowing us to continuously improve our practices and to build on our reputation as best-in-class. They are also supported by ISO31000 certified Risk Management Systems and recognised by the Australian Government Building & Construction WHS Accreditation Scheme (#0175), as well as individual State and Territory Government accreditation or prequalification schemes.

  • Our services are available Australia wide

  • Melbourne Cricket Ground - Stage One & Two

    Hazelwood Power Station & Mine

    Sydney Metro

    Adelaide Festival Plaza

    Cross River Rail

    Victorian Parliament House

    Sunshine Concrete Recycling Yard

    Our People

    Our people are what set us apart and why our clients trust us to deliver high risk, complex work programmes on time, on budget and without incident. They don’t just benefit from exciting and diverse projects with blue chip clients, they benefit from a culture of collaboration and innovation that allows them to make the most of their remarkable skills and talent.

    We are committed to an uncompromising culture that puts our people first and which demands visible leadership at every stage of a project and from everyone involved. Our custom designed Right First Time behavioural safety program empowers our people to STOP and THINK about what they are doing, even if they have performed a task hundreds of times before. It means:

  • We all go home safe. Every day.
  • Each of takes responsibility for our safety and for the safety of everyone around us.
  • We speak up when we see anything that appears unsafe.
  • We can and will stop work if something is unsafe.
  • Our Plant

    Delta Group operates Australia’s largest privately owned fleet of specialist plant and equipment. Purpose built to support our diversified services model, our fleet is regularly upgraded and meticulously maintained to exacting OEM, regulatory and client requirements. Sophisticated GPS, logistical and scale systems track the movement and loads of more than 1,000 trucks and machines across Australia.

    We are at the forefront of generational change as the world transitions to a low carbon, clean energy future. Our late model, new generation hydraulic excavators have the capacity to maintain high performance and productivity while minimising harmful emissions. Our latest machines can operate with lead free and biodegradable hydraulic oil and incorporate unique sustainability features such as fully recyclable manufacturing components.