Given the magnitude of the energy consumption of buildings, the construction sector is certainly a very important energy study area. Today, the concept of bioclimatic architecture is fundamental and is now an obligation of all engineers and architects. Thus lay the foundations for improving the energy behavior of buildings, minimizing the consumption of conventional energy and greenhouse gas emissions, while also respecting and protecting the environment while ensuring comfortable living conditions, quality and health in people’s lives. The purpose of this study is to investigate the level of knowledge and views of construction professionals regarding the application of the principles of bioclimatic architecture in the design, construction and renovation of buildings in Greece and the reasons for the lack of environmental awareness of Greeks until in recent years, resulting in a limited number of bioclimatic buildings in the Greek building stock of the country. The role played by the state and Greek citizens in the construction of non-bioclimatic buildings until recently is also under consideration.Finally, the present study aims to propose measures that could be taken to improve the energy efficiency of buildings by educating citizens and especially Greek engineers.