| 1976-03 |
Sansei Service Corporation (now Sansei Landic Corporation) established in Chuo-ku, Tokyo |
| 1976-09 |
Relocated head office to Yutenji, Meguro-ku, Tokyo |
| 1987-03 |
Changed trade name to Sansei Corporation (now Sansei Landic Corporation) |
| 1991-06 |
Started handling land |
| 1993-08 |
Established Sansei Housing Sales Corporation in Chiyoda-ku, Tokyo, for real estate sales and brokerage business |
| 1997-02 |
Relocated head office to Kanda-Awajicho, Chiyoda-ku, Tokyo, and changed trade name to Sansei Landic Corporation |
| 1999 |
Sansei Service Corporation (now Sansei Landic Corporation) established in Chuo-ku, Tokyo |
| 1999 |
Established Sansei Housing Sales Corporation in Chiyoda-ku, Tokyo, for real estate sales and brokerage business (started operations as Sansei Housing Sales in 2000) |
| 2002-01 |
Fully acquired Sansei Community Corporation (formerly Sansei Housing Sales) to strengthen management rights |
| 2002-04 |
Established Osaka Branch (now Kansai Branch) in Nishi-ku, Osaka, and Sapporo Branch in Chuo-ku, Sapporo, Hokkaido |
| 2002-05 |
Changed real estate transaction license to Minister of Land, Infrastructure, Transport and Tourism license (No. 6282, 1st issue) |
| 2002-11 |
Relocated head office to Kanda-Kajicho, Chiyoda-ku, Tokyo |
| 2004-08 |
Established Fukuoka Branch (now Kyushu Branch) in Chuo-ku, Fukuoka City, Fukuoka Prefecture |
| 2007-12 |
Established Nagoya Sales Office (now Nagoya Branch) in Naka-ku, Nagoya City, Aichi Prefecture |
| 2008-01 |
Started land management business |
| 2009-01 |
Relocated the head office to Kanda Tsukasamachi, Chiyoda-ku, Tokyo |
| 2011 |
Established Hachimantai Tourism Activation LLC in Chiyoda-ku, Tokyo, for tourism revitalization of Hachimantai hot spring village |
| 2020-05 |
Integrated the Yokohama branch into the Tokyo headquarters |
| 2021-11 |
Established Yamagata Prefecture Hot Spring Village LLC for the purpose of revitalizing tourism in Hachimantai Onsen Village, Chiyoda City, Tokyo |
| 2022-04 |
Changed market to Tokyo Stock Exchange Standard Market |
| 2023-05 |
Relocated headquarters to Marunouchi Park Building, Marunouchi, Chiyoda City, Tokyo |
