As a basic research on a simple and comprehensive evaluation of the residential fire safe performance, this paper documents a statistical analysis of the factors governing burned area, such as building structure, start of, and cause of the fire. The analysis is made by comparing the distribution characteristics for the cases in which initial fire extinctions failed immediately after those independent combustions discovered. Moreover, influence on the burned area depending on types of the building structure, maintenance, and management, by using the expectation of the burned area as an index, is evaluated.
