<p> The purpose of this study is to clarify the history of the development in Chiba Newtown and the process of the generation of non-dwelling facilities through the interviews on the developers and analysis of the physical change of living environment. Through the research, followings were identified:</p><p> </p><p> 1）The transition in Chiba NT development for 45 years</p><p> ChibaNT has been developed for 45 years, and the plan was changed several times. At first, the project aimed to supply housings and it registered as the “new housing and urban development project”. Thus, residential area occupied a large proportion of area in masterplan. However, the plan and its concept changed and the development area were shrunk, and it had decisive influence on forming today’s living environment. Especially, the number of commercial and business facility estates has increased based on the change of plan which introduces specific business facilities and multiple land use. And also the developers actively attracted private enterprises by introducing “Limited-term land rent right.” In addition, the change was influenced from rapid change of housing demands and the attack of expropriation committee in Chiba by citizens who are protesting against Narita Airport construction.</p><p> </p><p> 2）Emergence process and accumulation of non-dwelling facilities</p><p> Huge part of the area for residential estate change to the area for the commercial and business facilities, under the influences of the change of the plan including the shrinking of the development area, extension of planning period, and introducing of the estate of specific business facilities and multiple land use. Especially, the ratio of commercial and business facility estates in Chuou district and Makinohara district became large, and a lot of non-dwelling facilities were built between 1995 and 2015. And this change overlaps with the change on the masterplan. In 1995, small commercial facilities located near ChibaNT-Chuou Sta. and at neighborhood centers and a business concentration area were being formed on the north side of ChibaNT-Chuou Sta. On the other hand, in 2015, large commercial facilities located near ChibaNT-Chuou Sta. and along the main road, and the new residential areas are constructing. Laboratories and offices accumulated in "business mall", and logistics facilities were being formed in the northeastern part of the Chuou district.</p><p> As described above, there are two types of accumulation trend in the commercial and business facility estate, which was changed from residential estate. One is the accumulation of large commercial facilities, another one is that of logistics and business facilities.</p>