Corporate History
| May 1981 | Fushimi Construction Industry Co., Ltd. established |
|---|---|
| November 1983 | Company building completed in Yanagisawa, Hoya City (present-day Nishitokyo City) Company name changed to Fushimi Construction Co., Ltd. |
| July 1995 | Started new condominium and detached house development business |
| April 1996 | Started full-scale condominium development business |
| April 1999 | Started full-scale detached house development business |
| April 2000 | Kunitachi Sales Office opened |
| September 2000 | Company name changed to ARNEST ONE CORPORATION |
| March 2001 | Nagayama Sales Office opened |
| June 2001 | Musashi-Kosugi Sales Office opened |
| February 2002 | Listed on the JASDAQ (over-the-counter) market |
| May 2002 | Funabashi Sales Office opened |
| December 2002 | Sayama Sales Office opened |
| July 2003 | Aobadai Sales Office opened |
| August 2003 | Head office relocated to Nishihara-cho, Nishitokyo City |
| December 2003 | Fussa Sales Office opened |
| January 2004 | Listed on the Second Section of the Tokyo Stock Exchange |
| April 2004 | Omiya Sales Office opened, Atsugi Sales Office opened |
| November 2004 | Soka Sales Office opened |
| March 2005 | Listed on the First Section of the Tokyo Stock Exchange Totsuka Sales Office opened, Osaka Sales Office opened, Hachioji Sales Office opened |
| September 2005 | Matsudo Sales Office opened |
| January 2006 | Chiba Sales Office opened, Fukuoka Sales Office opened |
| April 2006 | Fujisawa Sales Office opened |
| July 2006 | Nagoya Sales Office opened |
| August 2006 | Kyoto Sales Office opened Aone Plus Co., Ltd. established as a subsidiary |
| November 2006 | Sangenjaya Sales Office opened, Odawara Sales Office opened |
| December 2006 | Toda Sales Office opened |
| March 2007 | Following the relocation of the Kunitachi Sales Office, the name was changed to Tachikawa Sales Office. |
| April 2007 | Head office relocated to Kitahara-cho, Nishitokyo City. Akashi Sales Office opened. |
| May 2007 | Ayase Sales Office opened. |
| September 2007 | Tokorozawa Sales Office opened, Ushiku Sales Office opened. |
| October 2007 | Kumamoto Sales Office opened. |
| April 2008 | Sagamihara Sales Office opened, Shin-Yokohama Sales Office opened, Yamato Sales Office opened, Kasukabe Sales Office opened, Sendai Sales Office opened, Nara Sales Office opened. |
| September 2008 | Following the relocation of the Totsuka Sales Office, the name was changed to Konandai Sales Office. |
| October 2008 | Kitakyushu Sales Office opened. |
| January 2009 | Okazaki Sales Office opened. |
| March 2009 | Nagayama, Musashi-Kosugi, Sangenjaya, and Kumamoto Sales Offices closed. |
| April 2010 | Utsunomiya Sales Office opened, Takasaki Sales Office opened, Machida Sales Office opened ARNEST WING CORPORATION established as a subsidiary |
| October 2010 | Shizuoka Sales Office opened, Ichinomiya Sales Office opened |
| November 2010 | Kusatsu Sales Office opened |
| January 2011 | Kurume Sales Office opened |
| August 2011 | Sakai Sales Office opened |
| September 2011 | Ishinomaki Sales Office opened, Fuji Sales Office opened |
| November 2011 | Toyohashi Sales Office opened, Koiwa Sales Office opened, Shirakawa Sales Office opened |
| December 2011 | Morioka Sales Office opened |
| January 2012 | Kuki Sales Office opened |
| February 2012 | Moriya Sales Office opened |
| March 2012 | Mizuhodai Sales Office opened |
| June 2012 | Narimasu Sales Office opened |
| July 2012 | Kobe Sales Office opened, Isesaki Sales Office opened |
| September 2012 | Following the relocation of the Akashi Sales Office, its name was changed to Himeji Sales Office. |
| October 2012 | Yokkaichi Sales Office, Ashikaga Sales Office, and Kagoshima Sales Office were opened. |
| November 2012 | Hiroshima Sales Office was opened. |
| January 2013 | Osaka Sales Office relocated to Higashiyodogawa-ku, Osaka City. |
| June 2013 | Kumagaya Sales Office, Narita Sales Office, and Sapporo Sales Office were opened. |
| July 2013 | Yamagata Sales Office and Kashii Sales Office were opened. Nagoya Sales Office relocated to Kita-ku, Nagoya City. |
| August 2013 | Mito Sales Office and Kariya Sales Office were opened. |
| October 2013 | Ayase Sales Office relocated, and Koriyama Sales Office was opened. |
| November 2013 | Following the establishment of the integrated holding company "Iida Group Holdings Co., Ltd." and its listing on the First Section of the Tokyo Stock Exchange, the company was delisted from the stock exchange. |
| June 2014 | Kisarazu Sales Office was opened. |
| July 2014 | Mishima Sales Office opened, Iwaki Sales Office opened, Shiroishi Sales Office opened, Oyama Sales Office opened |
| October 2014 | Niigata Sales Office opened |
| November 2014 | Chofu Sales Office opened |
| December 2014 | Okinawa Sales Office opened |
| January 2015 | Higashi-Osaka Sales Office opened |
| March 2015 | Toyota Sales Office opened, Kumamoto Sales Office opened |
| June 2015 | Okayama Sales Office opened, Akashi Construction Office opened, Fukuoka Sales Office relocated to Hakata Station East, Hakata Ward, Fukuoka City |
| July 2015 | Nagano Sales Office opened |
| August 2015 | Hirakata Sales Office opened |
| September 2015 | Hachinohe Construction Office opened |
| October 2015 | Fukushima Sales Office opened |
| November 2015 | Hachinohe Sales Office opened |
| December 2015 | Hamamatsu Sales Office opened |
| March 2016 | Fukui Sales Office opened, Omiya Sales Office relocated to Sakuragi-cho, Omiya-ku, Saitama City |
| April 2016 | Osaki Construction Office opened |
| December 2016 | Tajimi Sales Office opened |
| March 2017 | Kofu Sales Office opened, Sawara Sales Office opened, Fukuyama Sales Office opened, Wakayama Sales Office opened |
| May 2017 | Ishinomaki Sales Office relocated to Tachicho, Ishinomaki City, Miyagi Prefecture |
| June 2017 | Kakegawa Sales Office opened |
| July 2017 | Akashi Sales Office opened |
| August 2017 | Akita Sales Office opened |
| October 2017 | Ichinoseki Sales Office opened |
| November 2017 | Shimo-Osaki Recycling Treatment Plant opened in Shiraoka City, Yamaguchi Sales Office opened |
| January 2018 | Saga Sales Office opened |
| March 2018 | Kanazawa Sales Office opened |
| July 2018 | Aizuwakamatsu Construction Office opened |
| December 2018 | Takatsuki Sales Office opened, Okinawa Sales Office opened, Kumamoto Construction Office opened, Gifu Sales Office opened, Okinawa Sales Office opened, and the former Okinawa Sales Office was renamed Naha Sales Office upon opening of the Okinawa Sales Office. |
| June 2019 | Yamagata Sales Office relocated to Kasumi-cho, Yamagata City, Yamagata Prefecture. |
| September 2019 | Niigata Sales Office relocated to Yoroi, Chuo-ku, Niigata City, Niigata Prefecture, and Himeji Sales Office relocated to 3-23 Higashi-Enmatsu, Himeji City, Hyogo Prefecture. |
| October 2019 | Oita Sales Office opened, Matsumoto Sales Office opened. |
| January 2020 | Kumamoto Sales Office and Kumamoto Construction Office relocated and integrated to Oe, Chuo-ku, Kumamoto City, Kumamoto Prefecture. |
| February 2020 | Akashi Sales Office relocated to Suzuricho, Akashi City, Hyogo Prefecture, and Koiwa Sales Office closed. |
| March 2020 | Shunan Sales Office opened, Kitakami Construction Office opened. |
| October 2020 | Tsuruoka Sales Office opened, Mishima Sales Office relocated to Shibamoto-cho, Mishima City, Shizuoka Prefecture, Kuki Sales Office relocated to Honmachi, Kuki City, Saitama Prefecture |
| November 2020 | Hitachi Sales Office opened, Isesaki Sales Office relocated to Ota-cho, Isesaki City, Gunma Prefecture |
| December 2020 | Miyazaki Sales Office opened |
| January 2021 | Higashihiroshima Sales Office opened, Matsuyama Sales Office opened |
| March 2021 | Toyama Sales Office opened, Sendai Sales Office relocated to Taihaku-ku, Sendai City, Miyagi Prefecture |
| April 2021 | Sendai Izumi Sales Office opened |
| May 2021 | Kobe Sales Office relocated to Yawata-dori, Chuo-ku, Kobe City, Hyogo Prefecture |
| June 2021 | Takamatsu Sales Office opened |
| August 2021 | Nara Sales Office relocated to Sugiga-cho, Nara City, Nara Prefecture |
| February 2022 | Kamaishi Sales Office opened |
| March 2022 | Nagasaki Sales Office opened |
| April 2022 | Tottori Sales Office established |
| August 2022 | Cradle Farm established |
| October 2022 | Ueda Sales Office established |
| December 2022 | Yamaguchi Sales Office relocated to Ogori Kogane-cho, Yamaguchi City, Yamaguchi Prefecture |
| February 2023 | "Hotel Cradle Cabin Tateyama" opens |
| March 2023 | Tokushima Sales Office established |
| May 2023 | Cradle Cabin Isesaki Factory established |
| June 2023 | Iwaki Sales Office relocated to Kotaro-cho, Taira, Iwaki City, Fukushima Prefecture; Soka Sales Office relocated to Asahi-cho 4-chome, Soka City, Saitama Prefecture |
| December 2023 | Shirakawa Sales Office relocated to Shirakawa City, Fukushima Prefecture |
| August 2024 | Kochi Sales Office established |
| January 2025 | Matsue Sales Office established, and continues to operate to the present. |
