Becoming a foster carer is something that lots of people think about over a period of time before they make that next step of contacting someone. It has to be the right time for you. You do not need to be married or own your home to be a foster carer. People with a variety of life experiences and from all religious, ethnic and cultural backgrounds can become successful foster carers.
You can read that here.
You need to have the time and energy to care for children, you need to have a flexible and non judgmental approach as well as lots of patience and understanding and a spare bedroom for fostering.