In order to build a stable and energy-saving supply system, it is important to establish databases of energy demand for various buildings. With the popularity of the Internet, the diversified employment patterns, and the changes of life style, SOHO (Small Office Home Office) has increased significantly in the past few years in the central Tokyo area. As a new kind of architecture, the energy consumption study on SOHO in urban center area has not been conducted yet. This study aims to clarify the correlation between energy consumption and life style of users, as well as to establish an energy consumption database of SOHO in urban center, which will serve as a baseline when such a building is designed. For this purpose, investigations on SOHO were conducted in the central Tokyo area. Based on the results, the database of energy consumption basic unit was established. And the value of annual energy consumption of SOHO was 1712.9MJ/(m^2・annual), which was between dwelling house and office. The life style of each user has a great impact on energy consumption both in value and in pattern. The results also show the importance of taking control of individual energy consumption.
