Planning of residential provisions for the ever increasing elderly persons in a society should take into consideration not only its present actual conditions but also its traditional socio-cultural norms. With this, objective in mind, this study outlines findings and their analysis of a series of field surveys in four areas of Taiwan carried out to observe and record current residential provisions for the elderly persons, healthy as well as handicapped, in Taiwanese houses which range from traditional to modern. We pay special attentions to peculiar conditions created by traditional design features of Taiwanese houses and extended family structure.