In Western Australia, individuals or couples over 18 years can adopt, including step-parents, relatives, and unrelated parties. You must meet certain criteria and complete a detailed and rigorous assessment process. This process prioritises the child’s physical, social and emotional wellbeing and safety. If you’re considering step-parent adoption in Perth, you’ll also need court approval and consent from the child’s other biological parent. That is unless exempted. Legal advice can help simplify the process.