This paper aims to clarify the characteristics of the detached 3 story houses in the urban densely inhabited area. Main conclusions are as follows ; (1) The detached 3 story houses could be classified into four types by the structural characteristics that is, (1) [concrete and wooden] (2) [steel and wooden] (3) [steel] (4) [wooden] (2) 86.2% of the house made for sale in 1993 are occupied by 3 storey house. (3) The typical type of the detached 3 story house for sale is 60-80 m^2 on floor space and 30-50 m^2 on house lot. And, the one for owned is less than 150 m^2 on floor space and less than 100 m^2 on house lot. That is, not only the detached 3 story house for sale, but also the one for owned is the creation of the narrow housing lots.