Urban agriculture is becoming more prevalent in urban cities all over the world. New methods and techniques have facilitated agriculture activities in the intra-urban areas that have high population density. Those areas suffer the most from urbanization problems and high levels of pollution. This research aims at studying physical applicability and social acceptability of UA retrofitting in intra-urban areas. A comparative analytical study is conducted between New Cairo and Nasr City using site and visits, face to face questionnaires. The results show spatial alternatives for urban agriculture applicability in New Cairo and Nasr city. The results also revealed residents needs for more green areas and their different preferences and concerns on urban agriculture retrofitting within residential buildings.