| 1980-09 |
Established Soei Planning Corporation with a capital of one million yen in Udagawa-cho, Shibuya-ku, Tokyo. |
| 1980-09-22 |
株式会社創英企画設立（資本金100万円） |
| 1981-02 |
本社移転（渋谷区宇田川町から代々木） |
| 1981-02 |
Moved our head office from Udagawa-cho to Yoyogi. |
| 1983-03 |
資本金300万円に増資 |
| 1983-07 |
資本金1,000万円に増資 : 建築物環境衛生一般管理業登録 |
| 1983-07 |
Increased our capital to 10 million yen. |
| 1983-07 |
Obtained a qualification to start environment preservation services for buildings. |
| 1983-07 |
Opened Higashi-hiroshima office. |
| 1986-12 |
消防設備業届出 |
| 1986-12 |
Obtained a qualification to start fire protection equipment services. |
| 1987-02 |
社団法人全国・東京ビルメンテナンス協会加入 |
| 1987-02 |
Became a member of Japan Building Maintenance Association as well as Tokyo Building Maintenance Association. |
| 1991-06 |
警備業認定登録 : 社団法人全国・東京警備業協会加入 |
| 1991-06 |
Became a member of All Japan Security Service Association as well as Tokyo Security Service Association. |
| 1991-06 |
Obtained a qualification to start security services. |
| 1992-02 |
本社移転（渋谷区代々木1丁目） |
| 1992-02 |
Moved our head office from "Yoyogi 1-chome 54-ban" to "Yoyogi 1-chome 37-ban." |
| 1992-06 |
資本金2,000万円に増資 |
| 1992-06 |
Increased our capital to 20 million yen. |
| 1995-03 |
本社移転（渋谷区代々木1丁目から2丁目） |
| 1995-03 |
Moved our head office from "Yoyogi 1-chome" to "Yoyogi 2-Chome." |
| 1995-03 |
Opened Hiroshima office. |
| 1996-01 |
自衛隊東京地方連絡部援護協力会加入 |
| 1997-06 |
Opened Saitama, Shizuoka and Osaka offices. |
| 1997-10 |
建築工事業登録許可 |
| 1997-10 |
Obtained a license to start construction work business. |
| 1998-10 |
電気工事業登録許可 |
| 1998-10 |
Obtained a license to start electric work business. |
| 1998-10 |
Opened Kobe office. |
| 1998-12 |
Opened Minato office. |
| 1999-03 |
建築物飲料水貯水槽清掃業登録 |
| 1999-03 |
Obtained a qualification to start cleaning services of drinking water tank for buildings. |
| 1999-04 |
資本金5,000万円に増資 : 消防施設工事業登録許可 |
| 1999-04 |
Increased our capital to 50 million yen. |
| 1999-04 |
Obtained a qualification to start fire protection facilities services. |
| 2000-02 |
Obtained a certificate mark named "Service Mark" which shows that our health-related services are reliable. |
| 2000-05 |
管工事業登録許可 |
| 2000-05 |
Obtained a qualification to start piping works. |
| 2001-07 |
Integrated Higashi-hiroshima office into Hiroshima office. |
| 2002-02 |
Obtained a qualification to start condominium management services. |
| 2002-09 |
Opened Hamamatsu office. |
| 2004-09 |
Integrated Osaka office into Kobe office. |
| 2004-12 |
Obtained ISO 9001:2000 certification. |
| 2005-07 |
代表取締役社長 鈴木 明 就任 |
| 2005-07 |
Akira Suzuki has assumed the presidency. |
| 2006-04 |
Integrated Minato office into the head office. |
| 2008-02 |
建築物環境衛生総合管理業登録 |
| 2010-12 |
Obtained ISO 9001:2008 certification. |
| 2017-03 |
マンション管理業者登録 |
| 2020-02 |
内装仕上工事業登録許可 |
