TOBCO is a well-established Civil & Electrical Infrastructure company and accredited service providor. We are a privately-owned company and our directors have over 40 years’ experience in some of Australia’s major infrastructure projects both holding senior positions for tier one construction companies.


Sam Turnbull


Sam Turnbull is Director and Proprietor of TOBCO Construction, an ASP and RMS Prequalified principal contractor for the NSW electricity distribution network. TOBCO provides design and construct services for civil infrastructure projects throughout Australia.

Sam and his business partner, Glen O’Brien, created TOBCO Construction from scratch in 2013; it has since become the third fastest-growing private company in Australia.

Sam graduated from UNSW in 1992 with a Bachelor of Engineering. Since graduation, he has combined his extensive organisational qualities with his excellent academic knowledge to successfully manage simultaneous, state-wide civil engineering and utility projects ranging from small to complex bridge, road, dam, street lighting, waste water and airport infrastructure.

His past experience includes the position of Executive General Manager of Infrastructure at Tenix, Sydney and 17 years as State Manager of Engineering at AbiGroup Contractors Pty Limited.


Glen O’Brien


Glen O’Brien is Proprietor and Director of TOBCO. A leading company in civil engineering and utility infrastructure solutions located in NSW, Australia.

Through a combination of academic qualifications, on-the-job experience, a conscious focus on renewables and dedication to excellent standards of delivery and customer service, Glen has been able to push TOBCO forward as principal contractor on extensive and complex urban infrastructure projects such as utility relocation and civil construction works.

Glen’s earlier employers, TENIX and AbiGroup, remember him as an enthusiastic team member with a natural ability to listen and learn. Glen graduated with a First Class Bachelor of Engineering at the University of Western Sydney in 2007. He rapidly worked his way up the engineering ladder, from Project Engineer to Project Manager on works ranging from bridge duplication, earth-filled and concrete dam construction such as the $350M Enlarged Cotter Dam Project to transmission, water and wastewater projects across Australia.