Increasing human activity, especially in business and trade in urban areas, leads to an increase in demand for buildings that are efficient to use. The increasingly limited land, as well as the practical needs of modern lifestyles, led to the development of the property in the form of a mixture of development referrals to provide a high level of productivity by combining various activities such as shelter, shopping, and business.
Property development nowadays leads to mixed-use development as demand in developing a city where there are two types of construction in mixed-use development, land mix use and mix use building. Mix use building is a concept that has at least two or more types of interconnected activities in an interconnected mass of buildings known as mix use building.
While the term for land mixed-use is often used in the concept of Superblock, generally, superblocks are developed with separate building blocks. In contrast to the mixed-use building which is a combination of allotment but with the mass of buildings that become one unity “One Building, Various Functions.” The mixed-use building project refers to multi-functional buildings that can accommodate multiple functions at once, such as residential, shopping centers, offices, education, recreation, and so on. This is done to maximize development in a relatively limited land by building vertically.
In response to the phenomenon, Shinjuku District, Tokyo, Japan has developed the concept of building the Mixed Use Building for various community activities. Shinjuku is famous for its nickname “The Busy District of Tokyo” with multiple business districts, Asia’s largest entertainment hub, Tokyo’s central government, and the world’s number one transit station.
At first, Shinjuku is a hilly terrain that produces an irregular configuration of road patterns and blocks. As the population grows, the main problem is the lack of large areas of land where significant developments can occur in Shinjuku, Tokyo.
With a population of Tokyo in the range of 33 to 35 million people, according to CTBUH (2009) is also the third highest city in the world regarding the accumulative height of its building. By the end of 2011, a total of 116 buildings with a height of more than 150m stands in downtown Tokyo, with more than 550 buildings over 100m located in metropolitan areas. Among Tokyo buildings exceeding 150m, 106 buildings (or 89%) were built since 1991, and 86 of them (or 72%) between 2000 and the end of 2011. With this variety of vertical buildings and functions, Shinjuku has overcome the problems of limited land in Tokyo.