The New Shimbashi Building (c1971) poses a high risk of collapse in a major earthquake. There are plans to eventually redevelop this building into a high-rise although negotiations with land-owners are taking longer than anticipated.

On March 29, the Tokyo Metropolitan Government released data from earthquake resistance inspections on public buildings built to the old ‘kyu-taishin’ earthquake codes (pre-May 1981). A total of 251 kyu-taishin buildings, representing a third of the total, were determined pose some risk of collapse in the event of an earthquake producing a seismic intensity scale (shindo) of a 6-upper or above. Of those, 156 were found to be at high risk of collapse.

The publication of this data is the result of a revision to the Act for Promotion of Renovation for Earthquake-Resistant Buildings that was introduced in November 2013. Under this revision, public buildings used by an unspecified number of people, such as hotels and commercial facilities, with a floor area over 10,000 sqm and built to the old kyu-taishin earthquake codes are obligated to carry out earthquake resistance inspections, the results of which are made public. This also applies to old buildings located alongside emergency roads. Although the revision requires building owners to carry out inspections, there are no obligations or requirements to conduct the retrofitting.

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