Our Story

Diamantina Construction & Management was built from the ground up over 25 years ago, with a simple goal: to create strong, lasting projects that support Queensland communities. Founded by Brett Sandy, a proud First Nations business owner with decades of industry experience, the company began in commercial construction — delivering buildings, refurbishments, and maintenance for government, councils, and private investors.

Over time, our work on Country inspired us to look beyond bricks and mortar. Through Diamantina Holdings Limited, we expanded into drone technology, combining modern innovation with cultural responsibility. Our drone projects support Traditional Owners, councils, and research groups by mapping heritage sites, monitoring environments, and providing accurate data for planning and protection.

What drives us is more than contracts or projects. We are committed to creating opportunities for Indigenous people, respecting Country, and leaving a positive impact wherever we work. From construction sites to cultural mapping, we bring the same values to every job: respect, reliability, and results.

“We see a future where construction and technology work hand in hand to protect Country and strengthen communities.”

Our Team

Diamantina Construction & Management has a team of 13 experienced staff, including project managers, qualified trades, and skilled workers who bring decades of combined knowledge to every site. We’re known for being reliable, safety-focused, and capable of delivering projects in regional and remote areas where others can’t.Diamantina Holdings Limited, our drone division, employs 7 specialists, including licensed drone pilots, data analysts, and field technicians. Together, they combine cutting-edge technology with cultural responsibility to deliver mapping, inspections, and environmental monitoring across Queensland.

"Innovation, we bring fresh thinking and new technology, from construction methods to drone mapping, to achieve better outcomes."

  • Community Impact

    We create opportunities for Indigenous people, support local jobs, and leave a positive legacy in every place we work.

  • Reliability

    We do what we say we’ll do — delivering projects safely, on time, and on budget.

  • Respect for Country and the Environment

    We respect the environment, land, culture, and communities we work with, ensuring every project is carried out with cultural responsibility.