Until about 100 years ago, the heating, cooling, and lighting of buildings was the domain of architecture. Thermal comfort and lighting were achieved with the design of building and a few appliances. Heating was achieved by a compact design, cooling by opening windows to the wind and shading them from the sun, and lighting by windows. Especially, daylighting was essential factor to live humanbeings in the room. Sometimes the architect must accept the light as it is and design the form in response to it. Contemporary architecture, environmental issues have risen up, people start to focus on the development-preservation balance. They tried to build a new model, which reflect the natural cycle and the interaction of eco-system. After the Rio environmental council, 1992, this movement was accelerated and expanded to energy consumption issues. The correlation between architect and environment, also, picked up speed. In this paper, we suggest application techniques to be used as basic data for the decision of appropriate daylighting control system in designing single building.