The purpose of this study is to investigate the satisfaction with sharing a bedroom among grandparent(s) and grandchildren, and the differences in the housing norms and satisfactions among the three generations of the extended families in Cheong-Ju city. Each three generations of the 50 extended families was interviewed with the questionnaire designed for each generation. The respondent family had at lest one child aged from 10 to 14 years old. The results showed that 40.0% of the elderly parents and 76.0% of the grandchildren shared a bedroom with someone beside a spouse, while about 90.0% of married couples had their own bedrooms. However, sharing a bedroom did not reduce the housing satisfaction of the grandparent(s) and the grandchild. The living arrangement of coresidence was mostly preferred by the grandparents, followed by the parents. The younger generations reported the more alternatives in living arrangement for the elderly. The number of bedrooms was the most important factor to be considered with coresidence of three generations but the most inadequate characteristics of the current housing to coreside. There were some differences in elderly housing norms and coresidence housing satisfactions among the three generations. The grandparents were most satisfied with coresidence living arragement, followed by the grandchildren and the daughters-in-law.