Ahead of the 2013 Western Australian state election, both major parties announced plans to built Aubin Grove station if elected. The Labor Party announced in June 2012 that it would build the station with 900 car parking bays, at a cost of $45 million. In August, the Liberal Party, which was in government at the time, announced it would build the station with 2,000 car parking bays and order new trains, at a cost of $80 million. The station was planned to relieve pressure at Cockburn Central station, which has its carparks full at 7:11am, the earliest of any Mandurah line station. In the same month, the government expanded an already existing order of 15 three car Transperth B-series trains by two, to cater for the new station. The Liberal Party won the election.
