Parenting orders end when the child turns 18, marries, enters into a de facto relationship or is adopted by another person [Family Law Act 1975 (Cth) ss 65H(2) and 65J(2)].
Where the child is adopted by a step-parent, parenting orders are not altered unless the Court approves the adoption. See FAMILY RELATIONSHIPS - Adoption.
Parenting orders can be varied by application to the court. The court will generally only allow a final order to be varied where the parties agree or where there has been a significant change of circumstances since the order was made and a variation is in the best interests of the child [s 65DAAA].