[5] By 1909, in addition to the two main lines, there was a signal box and booking office located at the up end of the station,[5] and two sidings each over 600 metres long on the eastern side of the tracks,[5] for the stabling of special race services.

[5][7] By 1929, four sidings existed at the down end of the station, parallel to the main lines.

[4][5] On 19 June 1965, Sandown Park reopened as an island platform,[4][5] coinciding with the first race day meeting at the adjacent racecourse.

[4][5] The station once had a second exit and a pedestrian underpass at the up end of the platform, but that has since been closed and filled in.

[11][12] Platform 1: Platform 2: Future services: In addition to the current services, the PTV Network Development Plan proposes linking the Cranbourne and Pakenham lines to both the Sunbury line and under-construction Melbourne Airport rail link via the Metro Tunnel.