This project involved the expansion of the existing Knox City Shopping Centre to the east, to enable construction of new retail zones, with new abutting multi-level carpark structures, as well as open-plan malls and retail linking a new 15 cinema complex and the existing multi-storey carpark and an at grade overflow / staff carpark.

   The building occupies the whole of the Martin Place frontage between George Street and Pitt Street, Sydney.

   The heritage Sydney GPO building was constructed in three main stages between 1865 and 1900, the first stage being opened in 1874. The redevelopment of the site comprised a new 26 storey office tower, a new 31 storey tower for the Westin Sydney hotel and incorporation of the heritage building into the hotel. A five level basement provides parking for 430 cars.

   Located on the site of the old Vickers Ruwolt industrial manufacturing facility, at the corner of Victoria and Burnley Streets, the centre comprises a new retail complex of some 50,000 square metres, with underground and aboveground carparking for approximately 3,000 cars and a new boutique cinema centre.

   This landmark project is valued at $600 million as was serviced by a large number of consultants including seven different architects.   Bonacci Group was the sole structural engineer and serviced this project with two project directors, two project engineers and an engineering and drafting support staff of up to 12.   The successful delivery was achieved by providing a relatively small number of highly skilled and motivated staff, minimising staff management and maximising client outcomes.

   Bonacci Group designed the Ian Potter Centre, which is the largest single structure on Federation Square, featuring 7,250 square metres of exhibition floor space, in 8 large, open galleries, over 3 levels.

   The building structure is a full structural steel frame on vertical steel columns, supported at deck level directly above the concrete crash walls separating the train tunnels below.