Both papers are dealing with the problematics of aplication of LEED rating system in Serbia, and are printed in the book of porceedings (Chapter 2- Development and aplication of existing sustainability assessment tools, methods and certification systems), edited by Rogério Amoêda, Ricardo Mateus, Luís Bragança and Cristina Pinheiro. The conference gathered some of the most prominent researchers in the field of sustainability assessment and was organized superbly.