The present work evaluated the applicability of the green roof system in the city of Recife after Municipal Law nº 18,112/2015. For this, a quantitative diagnosis of the architectural projects deferred with the green roof system from the period from January 13, 2015 to September 30, 2019 was carried out. With the data survey, a quantitative analysis was carried out making a relationship with the urban, social and environmental aspects of the region where they operate. It was possible to observe that the years 2016 and 2019 presented a greater quantity in the construction area with a green roof system approved by the Municipality of Recife, in the period from January 13, 2015 to September 30, 2019. In relation to the area of the green roof expected in these projects, 2019 was characterized by the largest available area, followed by 2016. The years 2015, 2017 and 2018 had smaller areas and their values did not differ statistically from each other. The number of projects differs from one period to another, being greater in the last two years of the survey. Within the scope of the territorial outline established by these Political- Administrative Regions, the data also demonstrate that the green roofs had greater representativeness, when analyzed under the quantitative aspect, in buildings of the multifamily type. It was also possible to verify that most of the projects are inserted in the agglomerations of vertical buildings, in areas of intermediate temperatures of 24ºC to 26ºC, with a predominance of higher values, in environs with few green areas available in their blocks and still in places with critical flooding problems. In general, the realization of this research allowed us to see, with the results obtained, that the green roof system is still little used in the city of Recife, indicating the need for the Government to adopt incentive measures, through tax deductions or subsidies, such as IPTU (city housing tax) reduction.