[1] The northern entrance consists of separate buildings for the lifts and escalators, which connect down to the station concourse.

[2]: 66 The contract for the excavation of the six stations and twin 15.5-kilometre (9.6 mi) bored tunnels on the City & Southwest project was awarded to a joint venture between John Holland, CPB Contractors, and Ghella in June 2017, for A$2.81 billion.

To reduce traffic congestion, the crushed rock excavated from the Barangaroo station site was taken away by barge on Sydney Harbour.

[3][4] A temporary facility was built in Clyde along the Parramatta River to receive the crushed rock and load it on trucks.

[16] Following expressions of interest, three companies were shortlisted for the station construction contract by the end of 2019: Hutchinson Builders, John Holland, and Besix Watpac.

[19] By October 2022, two out of the five lifts had been put in place and the installation of platform screen doors was underway,[20] which was completed by April 2023.

Other, more minor components were also complete by November 2023, including the terrazzo tiling, station signage, Opal fare gates, and sandstone wall panels.