Urbanization is a big challenge because cities are growing fast, using up a lot of resources. The New Urban Agenda wants to make cities better by planning them in a sustainable way. Some experts think there should be a different plan called Alternative Habitat III. This study shows that how cities are designed, like how many buildings there are and how much open space there is, can make a big difference in how sustainable they are. By focusing on what people need now and in the future, cities can be made better for everyone.