In recent years, the past of the house and building in some areas draws more and more interest from people who live in. This essay is going to find out some possible reasons for increasing interest in searching building history and methods for digging historical information. First of all, some people are extremely superstitious in the past of their homes. These kinds of people are not curious but afraid of those unknown things. For example, there was someone suicide in the house or a serious fire accident that happened before a new buyer buy it. Although these accidents do not affect the house itself after a reconstruction, most of the public still believe that these will bring about unfortunate matters to those who live in it.