Kumagaigumi Group
The Kumagai Gumi Group aims to create a synergistic effect through collaboration and achieve the one and only "construction service industry."
The Kumagai Gumi Group is a group of specialists that have further advanced and specialized the technologies cultivated by Kumagai Gumi, and built up unique expertise and technical ability. Our group companies coordinate to swiftly provide satisfying services in all stages of the total life cycle of buildings, including surveying, planning, design, construction, operation/continuous management, and renovation.
Overview of Group Companies
- Gaeart Co., Ltd.
- Taiwan Kumagai Co., Ltd.
- K&E Co.,Ltd
- TECHNOS CO．，LTD．
- TECHNO SPACE CREATES CO.,LTD.
- TECHNICAL SUPPORT Co.,Ltd.
- FATEC CO.,LTD
Gaeart Co., Ltd.
Gaeart is a company expanding nationwide that addresses wide-ranging needs, from new construction to maintenance and countermeasures for aging infrastructure, including infrastructure development such as paving for roads, airports, ports, and bridges, the manufacture of asphalt mixtures for use as paving material, and the sale of materials designed for infrastructure maintenance. It provides safe and secure roads for users through comprehensive services including research and development on new technologies that can contribute to a decarbonized and recycling-based society, as well as proposals, construction, and follow-up surveys. A subsidiary company manages and operates the Shiraito Highland Way toll road business, enhancing the company’s capabilities in preventive maintenance for infrastructure.
Gaeart Co., Ltd.| Address and telephone number | 8-27 Shinogawamachi, Shinjuku-ku, Tokyo 162-0814, Japan Phone：+81-3-5261-9211 Fax：+81-3-5261-9220 |
|---|---|
| Established: November | November 1963 |
| Capital | 1 billion yen |
| Sales | 46 billion 580 million yen (March 2024) |
| No. of employees | 777 (March 2024) |
| Representative/representative director | Shuhei Ishizuka |
Taiwan Kumagai Co., Ltd.
Established in Taiwan in 1974 as a Kumagai Gumi group company. The company has established achievements in the top class of Japanese general contractors in Taiwan, including construction of semiconductor plants and golf courses.
Taiwan Kumagai has constructed famous landmarks including the Tao Zhu Yin Yuan Tower, which resembles the structure of DNA, TAIPEI 101, which was the tallest building in the world, the Singuang Station building, which was a pioneering super high-rise building in Taiwan, and the Tachien Dam, which was the largest dam in the Orient at the time of construction.
| Address and telephone number | Room 8 (1408), 12F, No. 205, Section 1, Dunhua South Road, Taipei, Taiwan Phone：+886-2-2721-0427 Fax：+886-2-2741-2476 |
|---|---|
| Established | December 1974 |
| Capital | NT$ 800 million |
| Sales | 42 billion 15 million yen (December 2023) |
| No. of employees | 388 (December 2023) |
| Representative | Tadahiko Sinya |
K&E Co.,Ltd
K&E specializes in the building renovation business. It provides comprehensive production from planning and design to large-scale renovation work, including building survey/diagnosis, antiseismic diagnosis/antiseismic reinforcement, and the formulation of long-term renovation plans. K&E creates more comfortable spaces across the entire lifestyle of a building and provides construction services that satisfy customers across Japan.
K&E Co.,Ltd| Address and telephone number | 2-7-2 Fujimi Chiyoda-ku Tokyo 102-0071, Japan 15F, Stage Building Phone：+81-3-3512-2211 Fax：+81-3-3512-2214 |
|---|---|
| Established | January 2001 |
| Capital | 300 million yen |
| Sales | 28 billion 675 million yen (March 2024) |
| No. of employees | 369 (March 2024) |
| Representative/representative director | Kazuhiko Kawamura |
TECHNOS CO．，LTD．
Technos manufactures steel segments for shield tunnels and temporary construction machinery at its Toyokawa head office plant, as well as designing/producing/installing soil decontamination equipment and leasing for the ACEUP steel frame erection method.
At the Tokyo office, the company constructs unique foundations using a "Quattro Cutter" horizontal multishaft rotating cutter from Germany, and is expanding its environmental business and renovation business in conjunction with Kumagai Gumi.
| Address and telephone number | 2-1 Honohara, Toyokawa-shi, Aichi 442-0061, Japan Phone：+81-533-84-1111 Fax：+81-533-82-1601 |
|---|---|
| Established | February 1996 |
| Capital | 470 million yen |
| Sales | 6 billion 496 million yen (March 2024) |
| No. of employees | 151 (March 2024) |
| Representative | Fumiaki Yamashita |
TECHNO SPACE CREATES CO.,LTD.
Techno-Space Creates mainly works on software services utilizing CAD and information systems to create construction plans, applications, and building plans for every stage of a project; from planning to actual construction work.
The company is currently collaborating with Kumagai Gumi to promote new business expansion for BIM. It also provides universities and construction companies with education on basic and advanced CAD operations and knowledge of construction for everyone from beginners to those that are able to conduct on-site work. Techno-Space Creates will continue to back up all aspects of construction work.
| Address and telephone number | 9F Showa Building, 3-12-12 Higashi-Ikebukuro, Toshima-ku, Tokyo 170-0013, Japan Phone：+81-3-5960-1070 Fax：+81-3-5960-1721 |
|---|---|
| Established | November 1993 |
| Capital | 30 million yen |
| Sales | 898 million yen (March 2024) |
| No. of employees | 71 (March 2024) |
| Representative/president | Naoyuki Yamashita |
TECHNICAL SUPPORT Co.,Ltd.
Technical Support helps customers strengthen sales, technical development, and other core functions by outsourcing complex and specialized administrative work, thereby streamlining and improving the efficiency of their administrative departments.
Technical Support also provides the functions of an insurance agency, handling property and life insurance and providing insurance plans tailored to meet customer requirements. The company draws on its extensive experience to provide prompt, thoroughgoing support that accurately addresses customer needs to provide essential support for everyday life and daily business activities.
| Address and telephone number | 2-1 Tsukudocho, Shinjuku-ku, Tokyo 162-8557, Japan Phone：+81-3-3235-8131 Fax：+81-3-3267-0143 |
|---|---|
| Established | July 1995 |
| Capital | 70 million yen |
| Sales | 614 million yen (March 2024) |
| No. of employees | 43 (March 2024) |
| Representative | Hiroshi Shimura |
FATEC CO.,LTD
A comprehensive technology trading company that provides products based on the results of the latest in technical development in the construction industry.
FATEC provides not only products, but also the technology for utilizing those products to the fullest. It also currently conducts technical development regarding maintenance/update mainly in the construction industry and the development of self-walking assisting devices for the welfare/nursing industry. FATEC will continue to contribute to achieving a more comfortable environment and richer society via new products and technologies.
| Address and telephone number | 2-1 Tsukudocho, Shinjuku-ku, Tokyo 162-8557, Japan Phone：+81-3-3235-6269 Fax：+81-3-5261-9066 |
|---|---|
| Established | June 1989 |
| Capital | 20 million yen |
| Sales | 357 million yen (March 2024) |
| No. of employees | 10 (March 2024) |
| Representative | Takayuki Aono |