Under the Family Law Act 1975, the best interests of the child are the primary consideration in parenting matters. This includes maintaining meaningful relationships with siblings and half-siblings, where safe and appropriate. If two children have a close bond, regardless of whether they share both parents or only one, the court will often view their continued contact as beneficial to their emotional wellbeing.

If a parent is preventing a child from seeing their half-siblings, there are a few pathways to consider:

• Family Dispute Resolution (FDR): Mediation may help both parties reach an agreement about sibling contact without going to court.
• Parenting Orders: A person (including a grandparent or other relative) can apply to the Federal Circuit and Family Court of Australia for parenting orders that include time with siblings or half-siblings.
• Live With / Spend Time With arrangements: If children live with different parents post-separation, the court may order arrangements that support regular sibling contact.

You don’t need to be a parent to apply for orders that promote sibling relationships. Under the law, any person concerned with the care, welfare and development of the child can apply, including step-parents, siblings (in some cases), and extended family members.

When assessing these applications, the court will consider:

• The nature of the relationship between the siblings
• The emotional and developmental impact of losing that connection
• The views of the child (depending on their age and maturity)
• Any risks, such as exposure to conflict or harm
• The practicality of arrangements between households

Reconnecting with a half-sibling after separation can be emotionally important and legally possible. Australian family law recognises the value of sibling relationships and provides ways to maintain or rebuild them, especially if they serve the child’s best interests.
If you’re concerned about sibling contact after separation, consider speaking with a family lawyer about your legal options.