Either party can apply for a divorce after having been separated for at least 12 months. In WA, Applications are made to the Family Court of Western Australia. The proceedings are regulated by the Family Law Act 1975 (Cth).
The sole ground for divorce in Australia is “irretrievable breakdown of marriage”. This ground is proved by demonstrating to the Court that you have lived separately and apart for more than one year, and that there is no prospect of cohabitation being resumed through a reconciliation.