Our History

Ventia was formed in 2015 following the integration of Leighton Contractors Services, Thiess Services and Visionstream into a new, independent and dedicated services company.  Visionstream will retain its name in the market.

All three businesses have long and impressive histories that go back almost 30 years. 

In 1987, Thiess kicked off its services business when it won its first contracts in waste and remediation services.  

In 1996, Leighton purchased Visionstream with the aim of growing the business.  Over the past 20 years Visionstream has grown to become one of the major players in the Australia and New Zealand’s telecommunications market.   

In 2000 Thiess formed a joint venture with Silcar to undertake Telstra contracts – a relationship that ultimately saw Silcar become part of the Thiess business.

Still in 2000, Leighton Contractor Services was born when it won the operations and maintenance contract for Sydney’s Eastern Distributor – a contract that we still proudly retain. 

We are building on this rich history by drawing on the best elements of our past and the capabilities of our 6,000+ people to create a new company with an exciting future.