- 著者
-
山村 崇
後藤 春彦
田島 靖崇
- 出版者
- 日本建築学会
- 雑誌
- 日本建築学会計画系論文集 (ISSN:13404210)
- 巻号頁・発行日
- vol.85, no.773, pp.1447-1457, 2020 (Released:2020-07-30)
- 参考文献数
- 27
In recent years, a large number of new office buildings are continuously being constructed in the central business district (CBD) of Tokyo, stimulated by the latest deregulation policies. Conversely, office centers that are relatively far from the city center face a tough market environment: many facilities are over 30 years old, and reinvestment is needed. However, there are many cases where large-scale reinvestment cannot be expected in office centers that are outside of the city center, because the convenience of railways is inferior to that of the CBD. In such a context, this study analyzes the renewal cases of business districts led by private companies in Tennoz, Shinagawa city, Tokyo Metropolis. In Tennoz, the value of the area has increased through the continual small-scale incremental reinvestment by private companies without relying on large-scale reinvestment (hereinafter referred to as “small-scale continuous upgrading”). We examine the effect of small-scale continuous upgrading on the reconstruction of area value from the three aspects of “tenant industry”, “average rent”, and “area image”. The findings obtained are as follows: 1) Tennoz can be divided into two areas: “Bond Street Area” where small-scale continuous upgrading efforts has been concentrated and “Large Office Area” where it has not. In “Large Office Area”, reinvestment has been mostly limited to those related to the hardware performance of office buildings. On the other hand, reinvestment in the “Bond Street Area” has actively promoted maintenance that is not directly related to business functions, such as beautification of facades and pavements, enhancement of planting and art, and attraction of commercial facilities. 2) We compared tenant industry changes and rent changes between the two areas. In the “Large Office Area”, the main tenant industry has changed from manufacturing to wholesale and retail. Although the rent was high at the beginning of development, rents have been sluggish since then, as large companies representing the region moved out. On the other hand, in the “Bond Street Area”, rents were low at the beginning of development, but recently creative businesses such as advertising design firms have flowed in, so rents have risen. 3) Tennoz was recognized as a modern and high-quality office area until the late 1990s. In the 2000s, key tenants flowed out of the area, and the image of a declining office area became prevalent. In the 2010s however, upgrading activities at Bond Street were widely recognized, and the local image as an artistic quarter spread and became established. From the above results, it was confirmed that the small-scale continuous upgrading process in Tennoz improved the regional value in all aspects of “tenant industry”, “rent” and “area image”.