Our Group companies focus on offering safe spaces with a long useful life. Takamatsu Corporation builds buildings with the volume of steel
rebars exceeding the level required by the Building Standards Act of Japan by 15% or more, while Asunaro Aoki Construction is building
a track record in the application of a seismic control bracing method that can be added while buildings are in use to reinforce steel-frame
concrete buildings.
In addition to these efforts, we will continue to make other contributions to achieving a future where people can live happily through
services such as large-scale renovations and the succession of traditional architecture culture.
Buildings with seismic capacity exceeding Building Standards Act requirements of by 15% or more
Differences between the Building Standards Act and Takamatsu Corporation Standards
Takamatsu Corporation's buildings are constructed according to its own design standards that exceed the Building Standards Act by 15%*, and its track record of not losing a single building during the Great Hanshin-Awaji Earthquake (Southern Hyogo Prefecture Earthquake) has earned the peace of mind and trust of its customers.
*Reinforced concrete structures only (excluding some buildings). Excludes some specifications of reinforced concrete frame structures, steel frame structures, and reinforced concrete wall structures.
Large-scale renovation works
Asunaro Aoki Construction's seismic control brace and large-scale renovation works by Takamatsu Techno Service Co., Ltd. (Tokyo and Osaka) and M's Co., Ltd. improve safety and comfort and prolong the useful lives of buildings.
Our group is committed to addressing social issues to help shape a brighter future for the next generation. Through these efforts, we provide children with opportunities to observe, experience, and learn about the appeal of the construction industry, the vital role of social infrastructure, and the importance of disaster prevention measures.
We have also concluded disaster response agreements with government agencies and local municipalities, establishing a system that enables us to contribute effectively in the event of a disaster.
Asunaro Aoki Construction Co., Ltd. : Educational Support and Participation in Local Communities
Asunaro Aoki Construction actively participates in events where elementary and junior high school students can experience construction technologies firsthand, including observation tours of amphibious bulldozers.
Through outreach programs held regularly since FY2024--such as the EXPO School Caravan organized by the Cabinet Secretariat's Headquarters for the Promotion of the International Expo--we introduce our disaster prevention and mitigation initiatives and engage students in discussions to deepen their understanding.
We will continue these efforts to foster interest in the construction industry among the children who will lead the next generation and to strengthen our connection with the broader community.
Children trying out the controls during an amphibious bulldozer demonstration
Children observing a concrete compression test at "Tsukuba Chibikko Hakase"
Takamatsu Corporation：Establishment of a local disaster preparedness storage warehouse
Takamatsu Corporation has installed a "community disaster preparedness storage warehouse" outside the temporary fence on the construction site, targeting residents living near the construction site. In times of disaster, this disaster preparedness warehouse is opened to the public, and disaster relief supplies are provided, contributing to improving the disaster preparedness capabilities of the local community.
*This is done at locations where sufficient space can be secured.
Regional disaster preparedness storage warehouse
In addition to stockpiled supplies, we have prepared first-aid equipment and other items.
We believe that for the Takamatsu Group to achieve sustainable growth and execute its business strategy, it is essential to create an environment where people with diverse backgrounds, skills, and experiences can thrive, regardless of age, gender, nationality, disability, sexual orientation, or family status.
To this end, we are committed to "The Challenge of Becoming a Top-Class Good-Standing Company" and building "an organization where employees can experience the joy of work and personal growth." We will focus on attracting and retaining top talent and strive to foster a corporate culture in which employees find pride and fulfillment in their work and continue to deliver high performance.
Diversity & Inclusion
About our Diversity & Inclusion Vision and Activities
Enhancing Employee Engagement
At the Takamatsu Group, we place great importance on employee engagement as an indicator of how well we are achieving our goal of becoming a "Top-Class Good-Standing Company," which is a fundamental principle of our organizational management. We have been conducting an engagement survey every year since fiscal year 2020. In fiscal year 2024, we revised the survey content to more clearly identify organizational challenges.
The survey results are shared not only with senior management but also with the heads of smaller organizations such as departments and teams, to the extent appropriate, so that each organization can understand its own challenges. We analyze the results at various organizational levels, including the entire group, individual operating companies, and workplaces, and proceed with the consideration and implementation of improvement measures.
As a result of these efforts, the engagement score for the entire Takamatsu Group* was 46.8 in fiscal year 2024 and improved to 48.9 in fiscal year 2025, an increase of 2.1 points year on year. Going forward, we will continue to incorporate employee feedback into management, promote improvements at each organizational level, and work to foster a corporate culture where employees can feel a sense of fulfillment and growth in their work.
*The engagement score is a standardized score calculated based on the results of approximately 11,000 companies that use the same survey.
Health and Productivity Management
One of the key themes in the Takamatsu Group's ESG management is "S (Social): Realizing well-being that enables diverse human resources to thrive." We aim to be a group of employees who are physically and mentally healthy and full of vitality. To this end, through our "Collabo Health" initiative with the Health Insurance Society, we are implementing various measures, including improving health literacy, managing mental health, and promoting work-life balance.
In fiscal year 2025, we established an environment where all employees can participate in training and e-learning on various topics--including mental health, women's health issues, lifestyle habits, and cancer--to improve their health literacy. Through these initiatives, we will protect our employees' health, create a productive and supportive working environment, and strengthen the organization's overall capabilities.
In addition, each group company is striving to obtain certification as an "Excellent Health Management Corporation." Below is Takamatsu Construction Group's Health Declaration.
Takamatsu Construction Group Health Declaration
As a result of the various measures described above, Takamatsu Construction Group, the holding company, has been certified for the first time as a "Health and Productivity Management Outstanding Organization 2026 Small and Medium-Sized Enterprise Category (Next Bright 1000)" under the "Health and Productivity Management Outstanding Organization Certification System" recognized by the Ministry of Economy, Trade and Industry and the Japan Health Council.
In addition, the following group companies have also received certification: Takamatsu Corporation, Asunaro Aoki Construction, Takamatsu House, and Taisho Kogyo Corporation.
Going forward, we will continue to position the maintenance and promotion of employee health as one of our important management foundations, and we will further promote our health management initiatives with the aim of creating a comfortable and vibrant workplace, as well as becoming a company where employees can work with peace of mind for a long time.
Takamatsu Group has adopted the management philosophy of "We conduct the construction business as a mutually complementary activity vital to society."
Guided by this philosophy, we have established the Group Human Rights Policy to respect the human rights of all stakeholders involved in our business activities.
Kongo Gumi, which was founded over 1,400 years ago and is said to be the world's oldest company, and Nakamura Shaji whose history spans over 1,000 years, construct architectures such as shrines and temples utilizing skilled carpenters who
specialize in traditional wooden buildings of Japan. Shimada Gumi is Japan's leading company in archaeological digging and research.
Kongo Gumi Co., Ltd.：Said to be the world's oldest company
"Chon-na Hajime" Ceremony
(Start of the Hand Axe Ceremony, privately held)
Kongo Gumi which joined our Group in 2006, is said to be the oldest company in the world. Kongo Gumi is a shrines and temples architecture company with its history of more than 1440 years since Shigemitsu Kongo became the first president in 578A.D. as the "Sei-daiku", a carpenter in charge of protection of Shiten-no-ji temple built by Shotoku Taishi. Throughout its long history, the Kongo Gumi has consistently dealt in architecture of shrines and temples.
The "Chon-na Hajime" Ceremony, an annual event at Shiten-no-ji temple and the start of work for the Kongo Gumi, is designated as an Intangible Folk Cultural Property of Osaka City.
Nakamura Shaji Co., Ltd. : Founded 970A.D. (1st year of Tenroku)
Kuri (Storage) of Eihoji Temple
With its history of more than 1,100 years, Nakamura Shaji which joined our Group in 2007, is said to be the eighth oldest company in the world. Nakamura Shaji also deals in architecture of shrines and temples. Since its foundation in 970A.D. when the first president was invited from Kyoto, the Company cultivated and passed on the skills and mindsets of traditional Japanese architecture as the group of Japanese traditional architecture professionals. Similar to Kongo Gumi, Nakamura Shaji plays an important role in our Group by possessing not only a long history but also an outstanding technology and track record resulting in top share of shrine and temple architecture of Aichi Prefecture.
Shimada Gumi Co., Ltd. : A Major Player of Excavation and Research of Buried Cultural Properties
Excavation and Research of Buried Cultural Properties
Shimada Gumi that joined our Group in 2012, is a company dealing in excavation, research, analysis, relocation and maintenance of buried cultural properties, as well as development of historic sites. Shimada Gumi records a top share in this field of business among the Japanese private companies.
Buried cultural properties, which provide clues to the activities and cultures of people who lived in past eras, are subject to regulations regarding their preservation and investigation methods under the "Act on Protection of Cultural Properties." Even on one's own land, excavation surveys must be conducted in accordance with government guidelines, which is where specialized companies like Shimada Gumi come into play.
