This study is mainly considered in the points that follow, through the comparison of findings about questionnaire surveys to residents who have chances of housing improvement and repair work by themselves, so-called do-it-yourself. 1. The percentage of residents who, have each experiences of various kinds of hosing improvement and repair work by themselves. 2. The differences of the percentage by the housing type, the year of completion, and the region of residents, experienced and inexperienced. 3. The cause of which residents give up their motive for housing improvement and repair work by themselves. 4. The suggestion for building system design with housing improvement and repair work by residents.