The purpose of this study is to propose the system and the scenario for the Ubiquitous Home that controls the housing functions and to predict the activity of its residents. From the Smart Home that has radically developed after 1990, now the concept of the home that can think automatically without people's control comes out. While the existing Smart Home controls the home environment and the home automation system through the control of the residents to offer comfortable and convenient environments for dwellers, the Ubiquitous Home is a thinking home that makes optimized home environment by thinking automatically and recognizing residents through the home contexts. For the study of the Ubiquitous home, I have researched several cases of Smart Home inside and outside the country, and visited lavatories conducting the Smart Home researches in USA. Then I have classified and analyzed the Smart Home systems, arranging the system layouts from the existing apartment system layouts, and analyzed the differences between the Smart Home and the Ubiquitous Home. And lastly, I classified and analyzed the basic concepts of the home contexts for the Ubiquitous Home.