In 2020, work started at The Bays on this city shaping project. In March 2021, the project received its first major planning approval for the Project Concept between Westmead and the Sydney CBD and station excavation and tunnelling between Westmead and The Bays, and in September 2022 the project received its second major approval for station excavation and tunnelling between The Bays and Sydney CBD.

A third planning application was submitted to the Department of Planning and Environment in 2022 for rail infrastructure, stations, precincts and operations between Westmead and the Sydney CBD and was approved in 2023.

Sydney Metro has also commenced planning for over and adjacent station development at Parramatta, Sydney Olympic Park, Hunter Street (West and East) and Pyrmont.

The Department of Planning, Housing and Infrastructure has granted approval for over station development at Parramatta, Sydney Olympic Park, Hunter Street Station East and Hunter Street station West.

Sydney Metro has submitted a Response to Submissions Report for Pyrmont to the Department of Planning, Housing and Environment.