Mitsubishi Estate

Founding: from a Marunouchi auction with no bidders to Japan’s largest property company (1890)

Key decision·1890· Mitsubishi Estate — the full company history →

What the purchase of “useless land” left behind

What this founding shows is a choice made on a long clock: buy an open field with no visible use, in one lot, and build a Western-style office street on it. The purchase drew criticism inside the house at the time, and the local press doubted the district would ever prosper. From Mitsubishi Ichigokan in 1894 to the completed Icchō London of 1918 and on to the Marunouchi Building of 1923, the record is of leasable buildings added one at a time — and it appears to have been that accumulation which turned land nobody would price into the central business district of Tokyo.

The other thing that comes into view is what it means to manage a single asset, Marunouchi, as a whole. The separation of 1937 reads as a judgement that the property business had outgrown a division of the zaibatsu and belonged in a company of its own. The re-merger only three years after the post-war three-way split confirmed in practice that holding Marunouchi in pieces was not a workable business. A little over sixty years after the purchase, Mitsubishi Estate had settled into corporate form as a listed company operating a portfolio concentrated in one place.

Read the full dossier in Japanese →

The Japanese edition carries the complete record of this decision — the situation that forced it, the options weighed, what actually followed, and the sources behind every claim.

Other key decisions at Mitsubishi Estate


Yen amounts are converted at the average rate of each figure’s own year — not today’s rate; the revenue chart is shown in yen. Exchange rates & sources — the full ¥/US$ table →


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Data API

Mitsubishi Estate’s history, financials, executives and shareholders are published as static JSON — no key, plain GET. Full specification →

Method Endpoint Returns
GET /api/companies.json All companies
GET /api/8802/manifest.json Resource index
GET /api/8802/history.json History overview
GET /api/8802/timeline.json Chronology
GET /api/decisions.json All management decisions (index)
GET /api/8802/decisions.json Management decisions (index)
GET /api/8802/decisions/{slug}.json One decision (full dossier)
GET /api/8802/executives.json Executives
GET /api/8802/shareholders.json Major shareholders
GET /api/8802/financials.json Financial statements
GET /api/8802/financials-longterm.json Long-term results
GET /api/8802/segments.json Business segments
GET /api/8802/regions.json Sales by region
GET /api/8802/workforce.json Workforce