Sub Base Platypus

Further information, please go to or phone (02) 8969 2100.


Current Status

The Harbour Trust is the planning authority for Sub Base Platypus.

The Harbour Trust is moving forward with plans to rehabilitate the former HMAS Platypus site on Neutral Bay.

The Harbour Trust invitation for EoI to become part of Sub Base Platypus closed on 31 October 2017 (followed by more detailed Requests for Proposals).

The Harbour Trust is selecting a tenancy mix in keeping with the approved Management Plan.

Public exhibition of the Torpedo Factory Design Concept closed to comments on 26 March 2019.


For more information visit



The Harbour Trust’s vision is to create a landmark location for the people of Sydney. The revitalisation of Platypus will open up the fascinating spaces of this former industrial site for the first time in 150 years and will integrate the urban park with the surrounding neighbourhood.

The site was formerly a gasworks factory that was partially resumed by the Commonwealth Government as a torpedo manufacturing facility during WWII. In 1967 it became the base for the Royal Australian Navy’s Oberon Class submarines and was renamed HMAS Platypus.

In September 2003 the Federal Minister for Environment approved a comprehensive plan for the Harbour Trust’s sites. The Comprehensive Plan is a broad strategic plan which sets out a vision for the sites and includes a process for preparing more detailed management plans for specific places or buildings.

The former HMAS Platypus was included as an amendment to the Comprehensive Plan in May 2009.

Building on the overall vision established in the Comprehensive Plan, site-specific Management Plans were developed. They identify desired outcomes, including suitable land. HMAS Platypus is the most recent addition to the Harbour Trust. The Management Plan was approved in December 2016 and guides the revitalisation of the site as an urban parkland.

Consultation on the Platypus Management Plan took place between 12 August and 23 September 2016, to which Council made a submission.


Council Position

Council at its meeting of 19 September 2016: View the report to Council on 19 September 2016 (29MB).

Council at its meeting of 25 March 2019: View the report CiS01 HMAS Platypus - Torpedo Factory Design Concept Public Exhibition and Consultation (5MB)

Related Links