Abstract
As the sequel of a series of the study, this paper analyzes the dwelling unit plan of the multistory apartment building in Taipei City. The main conclusions are as follows. 1. There is a rough tendency that the larger the dwelling unit scale is, the more the separation between the public room and the private room comes to stand out. 2. Securing of privacy in the dwelling unit has been aimed though a basic frame of the public/private room plan is kept. 3.It can be thought about the relation between the public and the private sector that the public sector intensively promotes the improvement of the living environment from 1970's to 1980's and the private sector advanced a rapid diversification in 1990's. 4.The transition of the building form also contributes to the environmental enhancement in the dwelling unit and the diversification of the unit plan.