As the needs of the parish grew, a new church was built on the site in 1936 incorporating the existing tower and spire.

[4][5][6] Under Bishop Kevin Manning and dean Peter G. Williams, the building was designed by Romaldo Giurgola and the firm MGT Architects.

Giurgola was commissioned in 1997 for the restoration and design of a new cathedral complex after a fire destroyed the previous building.

[7] The Norman and Beard late-Victorian English romantic pipe organ, built in 1898, was installed in 2006.

Stephen Bicknell designed a new organ case in collaboration with Romaldo Giurgola and the instrument was restored and installed in Parramatta Cathedral by Peter Jewkes and Associates.