| 1917-12-18 |
Sagami Railway, founded on December 18, 1917 (Taisho 6), built a 33.3 km railway from Chigasaki through Atsugi to Hashimoto. Meanwhile, the same year and month, Kanachu Railway was established to build a railway from Atsugi to Yokohama. The two companies connected at Atsugi Station. |
| 1943-04 |
Sagami Railway absorbed Kanachu Railway, becoming a railway company with a total operational length of 61.8 km, including freight lines. |
| 1943-04 |
In April 1943 (Showa 18), Sagami Railway absorbed and merged with Kanachu Railway, becoming a railway company with a total operating length of 61.8 km, including freight lines. |
| 1944-06 |
In June 1944 (Showa 19), 35.3 km between Chigasaki and Hashimoto and between Samukawa and Shinozumi were acquired by the Ministry of Transport and Communications (then), and the 26.5 km Kanachu Railway line including freight lines became the current Sotetsu Line. |
| 1950-04 |
In April 1950 (Showa 25), entered the real estate subdivision business. |
| 1950-06 |
In June 1950 (Showa 25), resumed the operation of the commuter bus business. |
| 1952-06 |
In June 1952 (Showa 27), started the charter bus business. |
| 1952-06 |
Entered the charter bus business in June 1952 (Showa 27). |
| 1953-11 |
In November 1953 (Showa 28), entered the petroleum product sales business. |
| 1956-04 |
In April 1956 (Showa 31), opened Yokohama Station West Exit Yokohama Station Specialty Street and Takashimaya Store. |
| 1956-04 |
In April 1956 (Showa 31), opened Yokohama Station West Exit Yokohama Station Name Goods Street and Takashimaya Store. |
| 1964-11-24 |
Founded with a capital of 3 million yen. |
| 1973-11 |
In November 1973 (Showa 48), Sotetsu Joinus was completed (full completion in May 1978, Showa 53). |
| 1973-11 |
In November 1973 (Showa 48), Sotetsu Joinus [full completion in May 1978 (Showa 53)] opened. |
| 1976-04 |
In April 1976 (Showa 51), the Izumino Line (Nifutamagaoka to Izumino) was opened. |
| 1976-04 |
In April 1976 (Showa 51), Izumino Line (Nifutamagawa to Izumino) opened. |
| 1990-05 |
In May 1990 (Heisei 2), joined the major private railway companies. |
| 1990-05 |
In May 1990 (Heisei 2), joined the major private railway companies. |
| 1994 |
In 1994 (Heisei 6), began the Yokohama Station West Exit redevelopment project and the third phase extension of the Izumino Line (Izumichuo to Shonandai). |
| 1994-01 |
In 1994 (Heisei 6), started the Yokohama Station West Exit redevelopment project and the Izumino Line Phase 3 extension (Izumichuo to Shonandai) construction, positioning them as two major new projects. |
| 1998-09 |
In September 1998 (Heisei 10), Yokohama Bay Sheraton Hotel & Towers opened. |
| 1998-09 |
In September 1998 (Heisei 10), Yokohama Bay Sheraton Hotel & Towers opened. |
| 1999-03 |
In March 1999 (Heisei 11), the Izumichuo to Shonandai section opened. |
| 1999-03 |
In March 1999 (Heisei 11), Izumichuo to Shonandai opened. |
| 2003 |
Since 2003 (Heisei 15), promoted business restructuring to build a resilient integrated management system. |
| 2003 |
Since 2003 (Heisei 15), promoted business restructuring. |
| 2005-04-01 |
By April 1, 2005 (Heisei 17), spun off real estate, distribution, and other businesses, transitioning to a new group management system (holding company system). |
| 2005-04-01 |
By April 1, 2005 (Heisei 17), spun off real estate, distribution, and other businesses, transitioning to a new group management system (holding company system). |
| 2007-12 |
Starting with the opening of Sotetsu Fresa Inn Kamakura Ofuna (currently Kamakura Ofuna Station Kasama Entrance) in December 2007 (Heisei 19), focused on developing and operating lodging-specific hotels. |
| 2007-12 |
Focused on developing and operating hotels, starting with the opening of Sotetsu Fresa Inn Kamakura Ofuna (currently Kamakura Ofuna Station Kasama Entrance). |
| 2009-01-22 |
Changed the trade name to Sotetsu Preparatory Company Co., Ltd. and changed the business to railway operations. |
| 2009-09 |
In September 2009 (Heisei 21), to strengthen the group's management system and expand profits, separated the railway business, renamed Sagami Railway to Sotetsu Holdings, and the railway business successor company to Sagami Railway. |
| 2009-09-16 |
Succeeded the railway business of Sagami Railway Co., Ltd. and changed the trade name to Sagami Railway Co., Ltd. |
| 2010-10 |
In October 2010 (Heisei 22), spun off the automobile business, making Sotetsu Holdings a pure holding company. |
| 2014-09 |
Acquisition of all shares of Sunroute Co., Ltd. in September 2014 (Heisei 26). |
| 2014-09 |
Strengthening hotel business through acquisitions such as Sunroute Co., Ltd. in September 2014 (Heisei 26) and overseas expansion from February 2018 (Heisei 30) (Seoul, South Korea). |
| 2018-02 |
Overseas expansion from February 2018 (Heisei 30) (Seoul, South Korea). |
| 2019-11-28 |
On November 30, 2019 (Reiwa 1), started direct operation with JR lines, including the JR line. |
| 2023-03-18 |
On March 18, 2023 (Reiwa 5), started direct operation with Tokyu lines, connecting Sotetsu Line and the Tokyo metropolitan area. |
