One of the pillars of architecture is modern environmental building technologies, in which the modern architectural theories seek to achieve the environmental compatibility in between building materials and the environment. This is done through the use of modern environmental technologies and treatments in buildings in projections, façades, and sectors. Facades of buildings using modern environmental architectural technologies and treatments allow an increase or decrease in lighting, ventilation, and temperature. It is the conditions of internal spaces, which require the architectural designer to consider when using modern environmental architectural technologies and treatments. This achieves compatibility with climatic variables throughout the whole year. Therefore, the research aimed to identify the applications of modern environmental technologies for building envelopes, how to achieve thermal comfort for users, and the extent to which it rationalizes energy consumed in achieving thermal comfort. To achieve the goal of the research, the study analyzed the covers of seven buildings, in terms of modern environmental technologies. An analytical comparison was also made between the study cases to determine how these technologies achieve thermal comfort. From which, it became clear the extent of the impact of the applications of modern environmental technologies on the case studies in obtaining a built environment characterized by thermal comfort suitable for users as well as the extent of rationalizing energy consumed in achieving thermal comfort in the internal spaces of buildings.