[1][2] The foundation project, involved sinking a small section of the Fremantle railway line, between the City and Northbridge and demolishing the old Wellington Street Bus Station.
[4][5] Tunneling commenced on 31 January 2012, with Premier Colin Barnett, Transport Minister Troy Buswell, Lord Mayor Lisa Scaffidi and Senator Louise Pratt (representing Federal Infrastructure Minister Anthony Albanese) taking part in a ceremony in which several documents were placed in a time capsule and buried at the station, to be unearthed in 2031.
In late January 2014 Leighton Properties started construction on the King Square precinct on the former Perth Entertainment Centre site.
Four office buildings were constructed with Shell Australia, John Holland Group, P&N Bank and HBF as tenants.
In 1967 the government invited private developers, three internationally based, and one domestic group to submit proposals to place the railway underground, releasing 21 hectares (52 acres) for redevelopment.