The design of the room arrangement in a residence is special and individual work. In addition to the request of a client, it takes into consideration elements, such as law, a contexture, equipment, a charge of thermal insulation, a method of structure, a design, cost, and the time necessary for completion, and determines room arrangement. In this paper, it proposes the technique of designing automatically the room arrangement of a residence which used the design drafting example. The particle filter is an estimated method of the state vector in the general state space model and is technique to be similar at many samples point, and to express conditional distribution. It creates the dependence graph of the outside of each room and building from the introduction design drafting example, and decides the turn of determining room arrangement. Based on an answer example of the problem of the registered architect of the second class architect examination, a building and the design of the layout are learned using a particle filter from value with floor and the information of the contiguous road consecutively next. For a room of the turn decided by dependent graph, technique to decide the configuration of the room which likelihood is high in using a particle filter effectively by considering each room to be corpuscle is proposed. It is automatically designs the position of the building in the site and designs a restroom, the entrance, the bedroom, living dining, step and corridor in the building using an answer example of the problem for the second class architect design drafting examination, actually shows efficiency. Furthermore, a layout can reflect these constituent by reflecting constituent such as a request and a law, construction, facility, an insulator, how to structure, a design, cost, the term of works of the client to a probability map using interactive interface.