Expansion of Museums Discovery Centre

Render of two buildings on a sunny day with people in the foreground.
Image: Lahznimmo architects

The expansion of the Museums Discovery Centre has been approved by the NSW Government and has moved into delivery phase.

The expansion will significantly increase community access through new public spaces.

The new state-of-the-art building designed by NSW based architects Lahznimmo will include new facilities for the storage, care, research and viewing of the Powerhouse Collection, as well as flexible spaces for education and public programs, workshops, talks and events.


Project Site
The Museums Discovery Centre is located at 172 Showground Road Castle Hill. As part of the proposed expansion, a new building will be constructed on a part of the adjacent TAFE site along the eastern boundary of the existing Museums Discovery Centre site. The land will be transferred to Powerhouse from TAFE NSW.

Project Status

The expansion of the Museums Discovery Centre at 172 Showground Road, Castle Hill received planning approval from the NSW Government in April 2021. The project has commenced, subject to site weather conditions, it is expected to be completed in 2023.

The Museums Discovery Centre will remain open every weekend throughout the period and we invite you to visit us for free to discover the hundreds of collection items on display.

Traffic Management

To help minimise the impact to surrounding residents, all trucks and associated vehicles will utilise Showground Rd as the primary entrance point, with an alternate secondary access from Windsor Rd if required for the main construction works. The early works in the TAFE carpark will be accessed from Green Rd. Strict transport routes and scheduling will occur to minimise any off-site waiting. All loading will be undertaken within the site boundary from the Showground Rd entry point and for the early works from Green Rd.

Hours of Work

In accordance with the development consent, works will take place between 7:00am to 5:00pm Monday to Friday, and 7:00am to 3:00pm on Saturdays. Surrounding residents will be notified in advance if any out-of-hours deliveries are required.

Contact Details

If you have any questions or would like to further discuss the project with us, please contact the project team on project@maas.museum or call 1800 743 436.