| 1890 | March | The Marunouchi site (over 353,000m²)--a former military training ground known as Kanda Misaki-cho--purchased by Mitsubishi Company from the Japanese government |
|---|---|---|
| September | Marunouchi Architectural Office established | |
| 1893 | December | Mitsubishi Goshi Kaisha (limited partnership) established |
| 1894 | June | Mitsubishi Ichigokan, the first office building in Marunouchi, completed |
| 1906 | July | Real Estate Division established within Mitsubishi Goshi Kaisha |
| 1923 | February | Marunouchi Building completed |
| 1937 | May | Mitsubishi Estate Company, Limited established with paid-in capital totaling ¥15 million, with the ownership of the Marunouchi Building and its site, as well as business rights for buildings and land within the Marunouchi area, transferred from Mitsubishi Goshi Kaisha |
| November | Construction-related businesses of Mitsubishi Goshi Kaisha transferred to Mitsubishi Estate | |
| 1945 | April | Ownership of Yaesu Building (completed in March 1928 and renamed Marunouchi Yaesu Building in 1962) and its site transferred from Mitsubishisha Co., Ltd. to Mitsubishi Estate |
| 1950 | January | Business rights for the Marunouchi site and other land and buildings, excluding those for Marunouchi Building and Yaesu Building, were returned to Mitsubishihonsha Co., Ltd. . Mitsubishihonsha Co., Ltd. dissolved and its operations transferred to two newly established secondary corporations, Yowa Fudosan Ltd. and Kaito Fudosan Ltd. |
| 1952 | May | Mr. Takejiro Watanabe appointed president |
| November | Shin-Marunouchi Building completed | |
| 1953 | April | Yowa Fudosan and Kaito Fudosan merged with Mitsubishi Estate |
| May | Mitsubishi Estate's shares listed on the Tokyo Stock Exchange and the Osaka Securities Exchange | |
| 1959 | July | Marunouchi Remodeling Plan formulated |
| 1960 | February | Marunouchi Parking Area completed |
| 1962 | December | Hokkaido Building completed |
| 1969 | May | Mr. Otokazu Nakata and Mr. Takejiro Watanabe appointed president and chairman, respectively |
| Akasaka Park House offered for sale in lots, marking the launch of the Condominium Business | ||
| 1972 | April | Mitsubishi Estate New York Inc. established |
| June | The first phase of the Izumi Park Town Project launched | |
| December | Mitsubishi Real Estate Services Co., Ltd. established | |
| 1973 | November | Branches established in Sapporo, Sendai, Nagoya and Osaka |
| 1975 | May | Semiannual settlement of accounts changed to annual |
| 1978 | October | Shin Aoyama Building completed |
| 1980 | June | Mr. Tatsuji Ito and Mr. Otokazu Nakata appointed president and chairman, respectively |
| 1981 | October | Hibiya Kokusai Building completed |
| 1983 | April | Nagoya Dai-Ichi Hotel opened (renamed Royal Park Inn Nagoya in April 2001) |
| November | MEC USA, Inc. established | |
| 1984 | July | Mitsubishi Estate Home Co., Ltd. established |
| 1986 | March | MEC UK Limited established |
| July | The first consolidated financial statements announced | |
| October | Yokohama Office established (reorganized as Yokohama Branch in April 2000) | |
| 1987 | June | Mr. Jotaro Takagi appointed president |
| 1988 | January | Yokohama Minato Mirai 21 Block-25 Development Plan announced |
| 1989 | April | Tenjin MM Building (IMS) opened in Fukuoka City |
| June | Royal Park Hotel in Hakozaki, Tokyo opened | |
| July | Hiroshima Park Building completed | |
| Hiroshima Branch (renamed Chugoku Branch in April 2000) and Kyushu Branch established | ||
| 1990 | February | Participation in the City of London's Paternoster Square Project announced |
| April | Capital investment in the Rockefeller Group, Inc. initiated | |
| September | Construction of Ryokuendai New Town commenced | |
| 1993 | July | Akasaka Park Building completed Yokohama Landmark Tower completed |
| September | Yokohama Royal Park Hotel opened | |
| 1994 | June | Mr. Takeshi Fukuzawa and Mr. Jotaro Takagi appointed as president and chairman, respectively |
| 1995 | November | Reconstruction of Marunouchi Building announced |
| 1996 | January | Osaka Amenity Park (OAP) completed |
| November | Head Office relocated to Tokyo Building | |
| 1999 | April | Reconstruction of Marunouchi Building commenced |
| 2000 | April | Aqua City Odaiba commercial complex opened under the management of Mitsubishi Estate subsidiary Aqua City Co., Ltd. (renamed Mitsubishi Jisho Retail Property Management Co., Ltd. in July 2007) |
| November | Royal Park Hotels and Resorts Co., Ltd. established | |
| 2002 | March | Properties and equipment revaluated in accordance with the Law Concerning Revaluation of Land and other relevant laws and regulations |
| September | Marunouchi Building opened (completed in August) | |
| 2003 | February | Mitsubishi Trust and Banking Building completed (renamed Mitsubishi UFJ Trust and Banking Building in October 2005) |
| March | Head Office relocated to Otemachi Building | |
| April | Introduction of an executive officer system | |
| May | Paternoster Square completed in the City of London | |
| July | Royal Park Shiodome Tower opened | |
| 2004 | September | Marunouchi OAZO opened (completed in August) |
| December | Capital investment in Towa Real Estate Development Co., Ltd. initiated | |
| 2005 | March | Construction of Shin-Marunouchi Building commenced |
| June | Mr. Keiji Kimura appointed president | |
| November | Tokyo Building opened (completed in October) | |
| 2007 | April | Shin-Marunouchi Building opened |
| September | The Peninsula Tokyo opened (completed in May) | |
| 2008 | January | Towa Real Estate Development turned into a Mitsubishi Estate consolidated subsidiary |
| March | Sunshine City Corporation turned into a Mitsubishi Estate consolidated subsidiary | |
| October | Mitsubishi Estate Asia Pte. Ltd. commenced operations | |
| 2009 | March | Chelsea Japan Co., Ltd. turned into a Mitsubishi Estate consolidated subsidiary |
| April | Towa Real Estate Development turned into a Mitsubishi Estate wholly owned subsidiary | |
| April | Marunouchi Park Building & Mitsubishi Ichigokan completed | |
| 2010 | March | Construction under the Osaka Station North District Phase 1 Development Project commenced |
| April | Mitsubishi Ichigokan Museum opened | |
| 2011 | January | Mitsubishi Jisho Residence Co., Ltd. established through company spin-offs and the subsequent integration of residential development and sales businesses of Mitsubishi Estate, Mitsubishi Real Estate Services Co., Ltd. and Towa Real Estate Development Co., Ltd. |
| April | Mr. Keiji Kimura and Mr. Hirotaka Sugiyama appointed chairman and president, respectively | |
| April | Shanghai Representative Office established | |
| 2012 | January | Marunouchi Eiraku Building completed |
| October | Otemachi Financial City Completed |
