06 1989 Tokyo The Hibiya Daibiru Buildings A Highly Challenging Project
to Rebuild Actively Used Buildings

Putting Forward Plans for Rebuilding

Plans to rebuild the Hibiya Daibiru Buildings in Tokyo were put forward in 1982. In addition to the fact that both Buildings No. 1 and No. 2 were over 60 years old and showing their age, demand for rental space was strong in Tokyo at the time, and major changes to building construction standards made it possible to increase the total floor area, which would produce some 3,636 m2 of new office space in the heart of Tokyo, a highly valuable location where space was scarce. It was for those reasons that rebuilding plans were put forward.

  • Buildings No. 1 and No. 2 prior to rebuilding

However, there was one serious problem. Even Daibiru had no experience rebuilding at this scale. Previously, Daibiru had really only constructed new buildings on acquired land, so this was the company’s first project to demolish and rebuild buildings that were actively in use by numerous tenants. Moreover, both Buildings No. 1 and No. 2 were aging and needed to be rebuilt.

The following two problems emerged as Daibiru attempted to move forward with its rebuilding plans. The first was how to temporarily relocate tenants. Although the basic premise behind the rebuilding was to have as little impact as possible on the business operations of tenants, there was no choice but to relocate them to a temporary location so they could continue their operations during the demolition and construction process. The problem, however, was where to relocate them. At the time, the office rental market in downtown Tokyo was strongly a landlord’s market, so it was expected that securing a temporary relocation site would be quite difficult.

The other problem was whether to rebuild Buildings No. 1 and 2 together or separately in stages. Due to the large scale of the project, it was feared that Daibiru’s business performance would be greatly impacted if the plans did not proceed smoothly.