of King George Terrace. Extensions Old Parliament House was only intended to be 'provisional' and so office space was not provided for all members. This shortage of space was compounded by the decision of Prime Minister James Scullin to relocate his principal office from West Block to the building in 1930. This eventually resulted in all ministers, with their departmental staff, being accommodated in the building over time, compounding the office space problem. The first extensions were made to the rear of the building in 1947 to provide more office space for members. Some further extensions were constructed in 1964. In the 1970s large extensions were added to both sides of the building and the south-west corner. The front façade was extended in a sympathetic fashion to conform with Murdoch's design. On the Representatives side, larger extensions were required, and a substantial part of the gardens were built over and linked to the main building by a bridge. The interiors of the 1972–73 extensions reflect fashions of the time, although wooden panelling was used for the walls, in keeping with the older parts of the building, but with an unequivocally 1970s style. On the Representatives side, the extensions necessitated the demolition of the Prime Minister's suite of offices (originally intended for the Speaker) and the original Cabinet Room. The rooms are now left in the condition they were in at the time they were occupied by Bob Hawke, immediately prior to the move to New Parliament House in May 1988. Similar extensions were made on the Senate side, with a new suite of rooms being constructed for the President of the Senate in a similar style. History Building a new Parliament A competition was announced on 30 June 1914 to design Parliament House, with prize money of £7,000. However, due to the start of World War I the next month, the competition was cancelled. It was re-announced in August 1916, but again postponed indefinitely on 24 November 1916. In the meantime, John Smith Murdoch, the Commonwealth's Chief Architect, worked on the design as part of his official duties. He had little personal enthusiasm for the project, as he felt it was a waste of money and expenditure on it could not be justified at the time. Nevertheless, he designed the building by default. The construction of Old Parliament House was commenced on 28 August 1923 and completed in early 1927.