The Treasury consulted with public and private sector stakeholders in late 2018 to test their views on the shape and role of any new infrastructure body. Some 130 submissions(external link) were received. The feedback was used to inform recommendations to the Minister and in February 2019 the Government outlined(external link) the form, functions and name of the Infrastructure Commission, Te Waihanga (Infracom). A Cabinet paper(external link) released at the time provided more detailed information.

In anticipation of Infracom being established, the Infrastructure Transactions Unit was created within the Treasury to provide support to agencies and local authorities in planning and delivering major infrastructure projects. This unit moved into Infracom upon formation and now provides the Major Projects function.

The enabling legislation(external link) received Royal assent and was passed on 25 September 2019, formally creating the Infrastructure Commission, Te Waihanga.