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District units plan si a plan implementation for the promotion of friendly urban environment, where human beings coexist with nature in certain area in a city. This concept, supports sustainable urban development and management, and improves urban infra-structure facilities and buildings for urban function and streetscape.However, related regulations and standards, which is necessary for height limitations to decide a street scenic beauty for open view and sky line are under consideration and not established. Currently, the zoning ordinance does not specifies height limitation in relation with city dimension, while oblique line regulation based on the road width has been a measure for height control. Therefore, this study aimed to analyze the relationship between base floor area ratio and oblique line limitation standard for the maximum height standard in district unit plan.The majer research findings were as followings: 1) Specific height control standard conforming to local urban context is necessary; 2) Uniform standard of 1 : 1.5 ratio does not shows optimum building scale; 3) The analysis of rerationship between road width and oblique line limitation suggests height control of 1 : 1.8 ratio rather than 1 : 1.5 ratio in general commercial district.