The aim of this study is to create a guideline for rooftop gardens in the city of Amman, taking into account the factors of social, environmental, and economic sustainability, and in a way that is largely consistent with the local building systems and regulations. Local libraries lack a guideline specialized in rooftop gardens, how to design and implement them, and choose the appropriate materials for them. The failure to exploit the unused rooftops of buildings in the city of Amman results in many environmental and architectural problems that this research found in order to address them, by providing diverse, accurate and standard information that facilitates the work of people interested in establishing rooftop gardens. To reach the desired goal of this research, many interviews were conducted with gardeners, experts and officials in companies with local and international sustainable products, in addition to experts in irrigation systems, monitoring and outdoor lighting. The information obtained by the researchers was tabulated through tables through which it is easy to access the information. The research outcomes are expected to develop design guidelines for the utilization of rooftop gardens in the city of Amman which respond to principles of sustainability, whether social, environmental or economical, as well as the result highlighted the importance of the guideline and the benefits that it can be brought to the city and its inhabitants from the environmental, social and even economic aspects.