Social Contribution Activities

• Basic Approach & Policy
• Initiatives

Basic Approach & Policy

The corporate philosophy of the Haseko Group is “To contribute to society by creating an optimal environment for cities and people,” and we implement social contribution activities under this philosophy.
Leveraging the technology and know-how we have nurtured thus far, we will work on initiatives that focus closely on social issues surrounding our daily lives while placing importance on our relations with local communities.

Initiatives

Helping resolve regional issues

Regional development and revitalization is one of the priority areas of our social contribution activities. In promoting these initiatives, we leverage the Group's expertise in architecture and related fields and seek to ensure that they are connected to our business strategy, while also contributing to improved services for residents of the condominiums we manage.

Activities at Haseko Technical Center (Tama City, Tokyo)

Haseko Corporation’s Haseko Technical Center in Tama City, Tokyo, has the Haseko Mansion Museum (by appointment only) and a biotope inhabited by many living creatures, both of which are open to the public.
Through various disaster prevention events and workshops, it works to offer a venue for engagement with the local community and deepening understanding of housing and living.
As a base open to the local community, the center fosters connections with the society through such initiatives.

• Press Release: Mansion Disaster Prevention Festival 2026 Held (Japanese Only)
• Press Release: Children’s Workshop Held at Haseko Mansion Museum (Japanese Only)

Activities at Sustaina Branche Hongyotoku

On August 23, 2025, Haseko Corporation held a disaster-prevention fair at the rental condominium Sustaina Branche Hongyotoku for residents and the local community.
In addition to presenting the Haseko Group’s disaster prevention technologies, the objective of this event was to have participants find out about the initiatives taken at this condominium to protect lives and building facilities in the event of a natural disaster. A total of 307 residents and members of the local community participated on the day, and they got involved in activities that included a virtual disaster prevention drill (patent pending) that teaches about natural disasters using the metaverse (a 3D virtual space), and the use of pure hydrogen fuel cell generators in the event of a power cut. With the cooperation of the Ichikawa City Fire Department in Chiba Prefecture, we also conducted fire drills on the grounds of the adjacent Tokuganji Temple, including initial firefighting training as well as exercises that allowed participants to experience the shaking of a major earthquake and the smoke from a house fire. Going forward, this condominium will continue to serve as a disaster prevention base for the local community.

• Press Release: Disaster Prevention Fair Held at Sustaina Branche Hongyotoku (Japanese Only)
• Sustaina Branche Hongyotoku Concept Page (Japanese Only)

Hosoda Corporation: Regional coexistence activities in Suginami-ku

Hosoda Corporation’s efforts to serve as a good corporate citizen include organizing cultural exchange initiatives to promote artistic and cultural activities and hosting seminars and events to support people’s lives, with the aim of realizing comfortable and affluent communities and societies and their sustainable development. Through these activities, Hosoda Corporation promotes active participation and living together with local community of Asagaya in Suginami-ku, in which the company's head office is located.

Participating in regional cleaning activities and campaigns

The Haseko Group continuously participates in cleaning and other activities in the region closely related to its business activities

Sponsorship of the MINATO City Half Marathon

Since the second edition of the event in 2019, the Haseko Group has been a platinum sponsor of the MINATO City Half Marathon, a sporting event for people of all ages from children to seniors, all nationalities, with or without disabilities, for the purpose of realizing a mutually beneficial society through sports.

Participation in Open House Osaka

Open House Osaka is Japan’s largest architectural event showcasing attractive architecture in Osaka on a weekend in the fall of every year. The Company has supported and participated in this event since 2019.

• Open House Osaka (Japanese Only)

Cooperating in blood donation

As a corporate blood donation supporter of the Japanese Red Cross Society, we held blood donation campaign each year. In FY2025, we held blood donation campaign twice each at Shiba Head Office Building in Tokyo and Hiranomachi Building in Osaka, in which a total of 240 employees donated their blood.

Next-generation development support

19th Haseko Residential Design Competition Held

Haseko Corporation has been holding the Haseko Living Design Competition targeting students across Japan, with the aim of fostering young people who wish to work in the world of architecture. The competition, held since 2007, invites submission of apartment building designs derived from freewheeling thinking unique to students, under a theme that reflects the social challenges and trends of the times.
The theme for FY2025 was “A village of 100 people,” and we received highly imaginative proposals for housing complexes that only students can produce. There were a total of 253 entries accepted (from 554 entrants). At the open judging session for the second round, we selected one first prize winner and three excellence award winners through presentations made by the four groups of finalists who had passed the first round and interviews and screening processes by the judges.
We will continue this program as a way to raise interest in housing and cultivate talented students. (In FY2026, for the 20th edition of the event, we have begun accepting applications under the theme of “A city for any activity.”)

• Summary video of the judging session (to YouTube) (Japanese Only)
• 20th Haseko Residential Design Competition (Japanese Only)

HASEKO Riko Challenge Summer of 2025 Condominium Museum Tour & Condominium Experience Tour

Since 2017, the Haseko Group has endorsed the Riko Challenge Summer jointly organized by the Gender Equality Bureau Cabinet Office and other bodies to support female students choosing to pursue careers in science and technology, and participated in the event as a supporting organization.
In FY2025, we held the HASEKO Riko Challenge^* Summer of 2025 Condominium Museum Tour & Condominium Experience Tour on July 30 and August 25, which was attended by 48 people, consisting of 22 groups of elementary, junior high, and high school students and their guardians (26 of which were elementary, junior high, and high school students).

• An initiative jointly organized by the Gender Equality Bureau Cabinet Office and other bodies to support female students choosing to pursue careers in science and technology

They were shown how fascinating building condominiums can be through a range of activities such as a reinforcing bar detection experiment to inspect whether the reinforcing bars within the concrete are embedded in the correct position, a hands-on experience at mixing mortar, and a visit to the Haseko Condominium Museum.

Haseko “Condominium Construction Site” pavilion at KidZania Tokyo

Since December 2025, Haseko Corporation has had a “Condominium Construction Site” pavilion at the KidZania Tokyo occupation and social experience facility run by the KCJ Group.
This pavilion offers three types of activities that provide children with the experience of wastewater pipe inspection and external wall repair as a condominium management engineer, and of entrance construction as a condominium construction engineer. It brings them into contact with the focus points and technologies involved in condominium construction, and allows them to deepen their understanding of the process leading up to the completion of a building and the importance of maintenance management.
Through this experience that reproduces actual work, the pavilion offers children an opportunity to learn about the fun of making things and the importance of teamwork, and it conveys the appeal of working in housing and construction to the next generation.

• Press release: Haseko deploys Condominium Construction Site pavilion offering three types of work experience at KidZania Tokyo (Japanese Only)

The Construction Explorers event

Participants trying their hand at construction work

Participation in the EXPO School Caravan

HASEKO Corporation held outreach classes on the theme of “SDGs” as part of the EXPO School Caravan. The EXPO School Caravan is a program organized by the Secretariat of the Headquarters for the World Expo, Cabinet Secretariat. With the cooperation of companies and organizations participating in the Osaka, Kansai EXPO, classes are held at elementary schools, junior high schools, high schools, special needs schools, and other institutions nationwide. The program aims to encourage children and students across Japan to use the Osaka, Kansai EXPO as an opportunity to think about the future society and translate those thoughts into future actions.
In the classes, attendees learned about the SDGs, particularly how the Haseko Group is involved in the Osaka, Kansai EXPO and what kinds of initiatives it is conducting to achieve the SDGs.

Scenes from outreach classes

Initiatives to promote social contribution activities

The Haseko Group is striving to further invigorate philanthropic activities based on the view that employees' voluntary efforts in social activities will lead to a higher awareness of social issues, help create more value in business activities, and realize a sustainable society.
We are currently running the Let’s Action! My SDGs campaign to generate awareness of the importance of social contributions in employees, in which a section of the company newsletter is set aside for introducing day-to-day, SDG-related initiatives by employees and calling for more employees to participate in the same. As the combined actions of each individual have great significance, by sharing information about these activities, we hope to give more employees opportunities and inspiration to get involved in solving social problems.
The Haseko Group will continue with these efforts and further promote social contribution activities across the Group.

Donation and sponsorship

Platinum Partner of the “Future of Life” installation at Expo 2025

The Haseko Group was a Platinum Partner sponsor of the “Future of Life” thematic installation created by thematic producer Hiroshi Ishiguro at the Signature Pavilion thematic project of Expo 2025 Osaka, Kansai, Japan. The Group was involved in design collaboration and construction services, and provided the actual building for the installation. This installation's thematic project name was “Amplification of Lives.” By constructing and displaying what lives might look like 50 or a 1,000 years from now, it was hoped that visitors would enjoy an unforgettable experience. Producer Hiroshi Ishiguro and sponsor companies co-created the “Future of Life,” depicting new ways of being alive as humans and a society based on advanced IT and robotics technology which Producer Hiroshi Ishiguro is developing. Through the Signature Pavilion, the Haseko Group conveyed his vision of the living environment and housing in an ideal society of the future shared by humans and robots to the world.

• Ishimoto Architectural & Engineering Firm was responsible for design, while design cooperation was provided by Haseko Corporation. The Haseko Group and FUJIKENSETSU jointly undertook construction work (excluding demolition and other aspects of the work).

• Hiroshi Ishiguro Signature Pavilion’s “Future of Life”
• Press Release: In-kind sponsorship of “Future of Life” installation at Expo 2025 through design collaboration and construction (Japanese Only)

Donation to Kyoto University of the Former Residence of the late Dr. Hideki Yukawa

In August 2021, as an act of corporate social responsibility, Haseko Corporation acquired the residence of Dr. Hideki Yukawa, Japan’s first Nobel Prize winner in Physics, and donated the property to Kyoto University (President: Nagahiro Minato). The residence, near Kyoto’s Shimogamo Shrine, is where Dr. Yukawa spent his last years. Haseko Corporation made the donation to affirm its agreement with Kyoto University’s desire to make effective use of the building to pass on the achievements and footprints of the late Dr. Yukawa to future generations, to develop our country’s science, technology, and arts in the future, and to develop human resources.
In 2023, maintenance and renovation works to ready the property to last well into the future commenced, with Tadao Ando Architect & Associates contributing reconstruction design services to the University and our Group’s Hosoda Corporation and Kyoto-based traditional Japanese carpenters, Yasuimoku Koumuten, handling construction. In March 2024, the works were completed and the building handed over to Kyoto University. Parts of the building that evoke a connection to Dr. Yukawa were retained, while contributing to the landscape of the city. The building, bearing the name of Kyoto University’s Shimogamo Kyueiso, will host the University’s esteemed guests and serve as a space for its faculty for educational, research, and conference purposes.

Special sponsor of the Prince Chichibu Cup All Japan Intercollegiate Ekiden

• Go for it! Special site for the Intercollegiate Ekiden (Japanese Only)
• Go for It! Intercollegiate Ekiden: Video report on Haseko’s ekiden support (to YouTube) (Japanese Only)

Arts and cultural activity initiatives

As an organization involved in housing and living, the Haseko Group undertakes a wide range of initiatives related to arts and culture with the aim of achieving a fulfilling daily life for people.
Examples of our main initiatives in the field of music include sponsoring the Tokyo Bunka Kaikan, the SEIJI OZAWA MATSUMOTO FESTIVAL, and the Tokyo 21c Philharmonic, and in the field of arts we sponsor the OHARA ART FOUNDATION (OHARA MUSEUM OF ART) and the SHIKI THEATRE COMPANY (Kokoro-no-Gekijo Project). We also participate in the Association for Corporate Support of the Arts, and work to promote cultural and performing arts activities by companies.
Furthermore, we have provided opportunities for the children who will lead the way in the future to develop an affinity for the arts and culture through initiatives that include holding a children’s painting contest as a commemorative event for the 80th anniversary of our founding.
Going forward, we will continue to contribute to fulfilling living for people and to the development of culture and the arts through our arts and cultural activity initiatives.

Workforce and expenditures in Haseko Group philanthropic activities

The workforce and expenditures used by the Group for philanthropic activities for the past five years are as follows:

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