Considering that the installation of vertical greening systems interests only one side of the building (3 sides are no-green), and that the features “building” and “green” are also affected by other factors in addition to the aesthetic ones
(e.g. building type, number of floors, presence of green areas closed to the building), for the three different locations the precautionary measure of 1/4 of the value of each weight given by Sdino [35] is assumed. For the three real estate market locations considered in this study, the maximum contribution of both features is: