| 1965 |
Founded: 1965 (Showa 40). |
| 1965 |
Established: 1965 (Showa 40). |
| 1965-04 |
In April 1965, Otani Construction Co., Ltd. was established at 1 Jushimamachi, Himeji City, Hyogo Prefecture, with a capital of 1.5 million yen, for land reclamation for private residences and construction and leisure facilities. |
| 1965-04 |
Established Otani Construction Co., Ltd. with capital of 1.5 million yen at 1, Juyoshimae-cho, Himeji City, Hyogo Prefecture, for purposes such as land preparation for residential use and construction of buildings and leisure facilities. |
| 1965-07 |
In July 1965, obtained the Hyogo Prefecture Governor's registration for construction business No. 4852 (civil engineering, construction). |
| 1965-07 |
Hyogo Prefecture Governor's registration of construction business No. 4852 (civil engineering, construction). |
| 1972-03 |
In March 1972, obtained registration as a Class 1 architect office (Hyogo Prefecture Governor's registration No. 359). |
| 1972-03 |
In March 1972, opened Osaka branch office (now Osaka branch). |
| 1972-03 |
Registered as a Level 1 Architect Office (Hyogo Prefecture Governor Registration (T) No. 359) |
| 1972-03 |
Opened Osaka branch office (currently Osaka branch) |
| 1973-05 |
In May 1973, obtained Hyogo Prefecture Governor's construction business permit No. 6447 (civil engineering, construction, paving, landscaping, water facilities). |
| 1973-05 |
建設業兵庫県知事許可(特-48)第6447号(土木、建築、舗装、造園、水道施設) |
| 1973-09 |
In September 1973, obtained real estate transaction agent license (Hyogo Prefecture Governor's No. 6267). |
| 1973-09 |
Obtained license as a real estate transaction business operator (Hyogo Prefecture Governor (1) No. 6267) |
| 1974-09 |
In September 1974, obtained Minister of Construction permit No. 4947 (civil engineering, construction, paving, landscaping, water facilities). |
| 1974-09 |
建設大臣許可(特-49)第4947号(土木、建築、舗装、造園、水道施設) |
| 1978-03 |
In March 1978, moved headquarters to 90 Tobori, Himeji City. |
| 1978-03 |
Relocated headquarters to 90 Tohori, Himeji City |
| 1986-10 |
In October 1986, established subsidiary Shindai Construction Co., Ltd. with capital of 20 million yen, to bid on government civil engineering projects in Kobe City. |
| 1986-10 |
Established subsidiary Shindai Construction Co., Ltd. in Kobe City with capital of 20 million yen to secure small- to medium-sized government civil engineering contracts in Kobe City. |
| 1987-10 |
In October 1987, moved headquarters to 71 Kita-jo, Himeji City (now 92-1 Kita-jo). |
| 1987-10 |
Relocated headquarters to 71 Kojyo, Himeji City (current address: 92 Kojyo 1-chome, Himeji City). |
| 1990-09 |
In September 1990, opened Fukuyama branch (now Hiroshima branch). |
| 1990-09 |
Opened Fukuyama branch (currently Hiroshima branch). |
| 1994-02 |
Opened the Kyoto office (now Kyoto branch) in February 1994. |
| 1994-02 |
Opened Kyoto branch office (currently Kyoto branch). |
| 1996-05 |
Opened the Nagoya branch in May 1996. |
| 1996-05 |
Opened Nagoya branch. |
| 1997-12 |
Obtained ISO 9002 (now ISO 9001) certification for quality management and assurance in December 1997. |
| 1997-12 |
Obtained ISO 9002 certification for quality management and assurance (currently ISO 9001). |
| 2000-09 |
Obtained additional approval No. 4947 (special-12) from the Minister of Construction in September 2000 for demolition, earthworks, and shunt operations. |
| 2000-09 |
Obtained additional permission from the Minister of Construction (Special-12) No. 4947 (for flying, earthworks, and construction). |
| 2003-08 |
Changed company name to NOBACK Co., Ltd. in August 2003. |
| 2003-08 |
Changed company name to Noback Co., Ltd. |
| 2003-09 |
In September 2003, acquired sales of civil engineering and construction business from Marubeni Construction Co., Ltd., and opened branches in Hokkaido (closed September 2009), Tohoku, Niigata (closed May 2010), Tokyo headquarters, Yokohama, Shikoku office (now Shikoku branch), and Kyushu. Took over construction material recycling and snow removal businesses in the Hokkaido area. |
| 2003-09 |
Acquired sales of civil engineering and construction business from Marubeni Construction Co., Ltd., and opened branches: Hokkaido branch (closed September 2009), Tohoku branch, Niigata branch (closed May 2010), Tokyo headquarters, Yokohama branch, Shikoku office (currently Shikoku branch), Kyushu branch. Took over construction material recycling and snow removal businesses in the Hokkaido area. |
| 2003-12 |
国土交通大臣許可(特-15)第4947号(鋼構造物)追加取得 |
| 2004-12 |
In December 2004, obtained additional approval No. 4947 (special-16) from the Minister of Land, Infrastructure, Transport and Tourism for pipe and machinery installation, and discontinued construction material recycling and snow removal businesses in the Hokkaido area. |
| 2004-12 |
Obtained additional permission from the Minister of Land, Infrastructure, Transport and Tourism (Special-16) No. 4947 (for management, installation of machinery and equipment). Obtained license as a real estate transaction business operator (Minister of Land, Infrastructure, Transport and Tourism license No. 6975). Discontinued construction material recycling and snow removal businesses in the Hokkaido area. |
| 2005-10 |
In October 2005, transferred all shares of Sindai Construction Co., Ltd., becoming a non-subcompany. |
| 2005-10 |
Transferred all shares of Shindai Construction Co., Ltd. and made it a non-subcompany. |
| 2010-11 |
Obtained ISO 14001 certification for environmental management in November 2010. |
| 2010-11 |
Obtained ISO 14001 certification for environmental management. |
| 2018-12 |
Selected as a 'Regional Future Leading Company' by the Ministry of Economy, Trade and Industry in December 2018. |
| 2018-12 |
Selected as a 'Regional Future Leading Company' by the Ministry of Economy, Trade and Industry. |
| 2019-03 |
Obtained additional approval No. 4947 (special-30) from the Minister of Land, Infrastructure, Transport and Tourism for demolition in March 2019. |
| 2019-03 |
国土交通大臣許可(特-30)第4947号(解体)追加取得 |
| 2019-10 |
Obtained additional approval No. 4947 (special-1) from the Minister of Land, Infrastructure, Transport and Tourism for electrical work in October 2019. |
| 2019-10 |
国土交通大臣許可(特-1)第4947号(電気)追加取得 |
| 2022-03 |
Listed on the Second Section of the Tokyo Stock Exchange in March 2022. |
| 2022-03 |
Listed on the Second Section of the Tokyo Stock Exchange. |
| 2022-04 |
Moved to the Standard Market following the Tokyo Stock Exchange market reorganization in April 2022. |
| 2022-04 |
Transitioned to the Standard Market following the Tokyo Stock Exchange market reorganization. |
| 2025-02 |
Acquired all shares of TOMTEN Co., Ltd. and became a subsidiary in February 2025. |
| 2025-02 |
Acquired all shares of TOMTEN Co., Ltd. and made it a subsidiary. |
| 2025-08 |
Obtained ISO 45001 certification for occupational health and safety in August 2025. |
| 2025-08 |
ISO45001 Certification for Occupational Safety and Health Acquired. |
