Additional details on the Uchisaiwaicho 1 Chome District Redevelopment have been released. The 6.5-hectare site is across the street from Hibiya Park and includes the Imperial Hotel.
The project is split into three segments, with a total of four high-rises to be completed by the late 2030s. A total of 10 landowners and developers will take part in the redevelopment, including NTT Urban Development, Mitsui Fudosan, TEPCO Power Grid, and the Imperial Hotel.
To improve the city’s walkability, a pedestrian overpass will provide direct access between the project and Hibiya Park.
|North Block||Center Block||South Block|
|Building height||145m & 230m||230m||230m|
|Floors||29 & 46||46||43|
|Floor area||150,000m2 & 270,000m2||370,000m2||310,000m2|
|Construction schedule||2024-2030 (office tower)|
Demolition includes the Mizuho Bank building designed by Yoshinobu Ashihara and completed in 1981, and the modernist NTT Hibiya Building designed by Hideo Kunikata and completed in 1961. In 2003 the NTT building was selected by DOCOMOMO Japan as one of the country’s modern movement buildings.
Source: Cabinet Office, June 29, 2021.
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