Energy efficient buildings significantly contribute to meeting the EU climate and energy sustainability targets for 2020 as approximately one third of all end-user energy in Europe today is consumed by space heating / cooling, ventilation and lighting of buildings. In this context, the energy performance of future building envelopes will play a key role.The main aim of COST Action TU1403 with 120 participants from 26 European countries is to harmonise, share and disseminate technological knowledge on adaptive facades on a European level and to generate ideas for new innovative technologies and solutions. This shall lead to: Increased knowledge sharing between the various European research centres and between these centres and the industry; The development of novel concepts and technologies and/or new combinations of existing technologies for adaptive facades; The development of new knowledge such as effective evaluation tools / methods for adaptive facades; The start of new collaborations and research projects in the area of adaptive facade technologies.