The importance of maintaining the quality of the built environment surrounding all of us can not be stressed enough since it has significant influence over our life, community and society in a variety of ways. It can not only enhance the quality of our life, but also enrich our local communities. However, the built environment, which is obviously distinguished from the natural environment, has inevitably involved the consumption of all available resources around us such as trees, water, electricity, gas and coals. As a result, our effort to create a better built environment has paradoxically helped exploit our natural resources to a certain level that we now ought to think of sustainability to the standard of our living. Growing and greater pressure for sustainable built environment and development is now upon interdisciplinary involvement from architects, town and urban planners, engineers and policy makers, in order to build sustainable society for next generations. The sessions prepared in EKC 2018 deal with the aforementioned problems, study strategical approaches for more sustainable built environment responding to climate change and building efficiency, listen to recent researches and works touching on sustainable methodology from theoretical and practical points of view, and finally raise a question that would bring us an answer to what more needs to be exercised for our next generations and society. The talk sessions programmed on 23rd August 2018 are as follows; 11:00 – 12: 40 at Room R4 Challenge for Urban Planning: Heat stress in the Built Environment 13:30 – 15:10 at Room R4 New influential paradigm of environment-friendly tools and building’s energy performance: Part 1 16:00 – 17:40 at Room R4 New influential paradigm of environment-friendly tools and building’s energy performance: Part 2 There is also a poster session in relation to the Built Environment.