This methodological guide is a tool to help in the design, organisation and operation, of a Samusocial accommodation centre specifically suitable for children and young people living on the street who are encountered by Samusocials. These children and young people live permanently on the street; they are so-called « children of the street ». They are on average between 12 and 25 years old. They are boys and girls, some of whom are young single mothers.