Is there an age limit? The minimum age to be eligible to adopt is 21 years old. There is no upper age limit to adopt a child although you need to have the potential to care for the child through to adulthood. The team at ARC Adoption North East are happy to talk to you and offer further guidance around this. If you would like to know more about adoption and starting the adoption process with ARC Adoption North East and the support available, please contact us.