To adopt innovative technical solutions for green field developments for application in district refurbishment and to develop new solutions specialized to the needs and constraints of existing urban areas, four Focus Districts will be analyzed and embraced within SIMPLY POSITIVE. The cities participating in the project are from four different nations, with different sizes, different climatic conditions and different existing sustainability strategies in place and different data sets available for our work. The four selected focus districts provide a great selection for universally applicable methodology and strategies.