The thesis at hand focuses on the subject of youth homelesness. Over the course of the thesis, the different motives as well as the multiple causes of youth homelessness are reviews. A thourough definiton of the relevant terms will provide a a coherent understanding of the matter. In the following, there will be an emphasis on gender-specifity and health, as well as the socialspatially factors of homeless young adults. Subsequently, the concept of a social environment orientation will be discussed and the method of Streetwork will be introduced as appropriate support. The final part of the paper comprises a summary and opens a discussion of youth homelessness in Austria along with current approaches of social work in Vienna.