The study aims to investigate the outdoor design requirements for the homeless, who are increasing daily as an important social problem worldwide. For this purpose, the literature review created a checklist including urban space and design parameters deemed necessary to improve the quality of space for the homeless. The data in the literature section were analysed under the titles of Maslow’s hierarchy of needs of the homeless, psychosocial needs of users, spatial criteria affecting the quality of the recovery environment, visual aesthetic elements, and functionality of urban furniture. Beyoğlu (Gezi Park), Fatih (Anıt Park), and Şişli (Sıracevizler Park), the three districts with the highest homeless population in Istanbul, were selected as the study area. A total of 21 homeless people living in these parks were surveyed face-to-face. In addition to questionnaires, photographs, video footage, and on-site observations were also used in the evaluations. As a result of the study, it was determined that all three parks generally met the expectations; However, the use of colour in urban furniture, which was considered important in the environments where the homeless lived, was insufficient; Flowering plants were not included in either park except for Anıt Park.