Elderly care services are health, mental health, social health, and residential services provided to temporarily or chronically disabled older persons over an extended period of time with a goal of enabling them to function as independently as possible. And elderly care facilities such as nursing homes are places in which elderly care services have to be delivered effectively. It is, therefore, desirable to compose the space of elderly care facilities to meet the mental and physical abilities of frail elder people. This study has proposed the hierarchical space organization of elderly care facilities with an aim to fulfill the goals of them. Frail older people in hierarchically designed homes are anticipated to use the inner and outer spaces of care facilities as independently as possible in accordance with their physical and mental abilities.