Sustainability is one of the Daibiru Group’s most important missions.
The “Group Code of Conduct”was formulated with this in mind. The Daibiru Group will focus on the corporate principles and comply with the “Group Code of Conduct” in its corporate activities while at the same time making the utmost efforts to achieve sustainable growth in harmony with society.
Furthermore, conforms to “Environmental Policy of the Group” the Daibiru Group works with all its stakeholders, including customers, local communities, and business partners, to ensure that its activities compliment and harmonize with the natural environment.

Since its establishment in 1923, the Company has focused on building constructions which emphasize coexistence with nature such as rooftop greenery, reduction of the environmental impact by existing buildings, and coexistence with the local community. We will continue to promote initiatives for sustainability and to contribute to achieving a sustainable society through its business activities.

To grow alongside society and assess the range of issues facing it from a business perspective, we have identified as material a series of priority issues (materiality) in the short, medium, and long term that are either business opportunities or risks.
Ⅰ.Providing value to society (or reducing damage to social capital)< Materiality >
① Provide optimal offices for changing times
② Be rooted in the community and develop alongside towns
③ Provide eco-friendly buildings to the next generation
Ⅱ.Strengthening the foundation for providing value
① Increase human resource and organizational strength
② Accumulate intellectual capital to form the basis for high-quality services
③ Collaborate with stakeholders to create value
④ Evolve toward corporate governance that supports sustainable improvement of corporate value

※Group materiality comprises two categories: (I) providing value to society (or reducing damage to social capital) and (II) strengthening the foundation for providing value. The three materialities within category I correspond roughly to our corporate principles,
“constructing buildings, creating towns, pioneering the new area,” in that the first materiality concerns office buildings, the second
concerns local communities, and the third involves consideration for the environment.

Coexistence with the Local Community

Building a Pedestrian Bridge in Nakanoshima 3-chome

 As part of the joint development of Nakanoshima 3-chome, conducted through a joint venture, the Nakanoshima Shiki-no-oka has been connected by a pedestrian bridge to the promenade beside the Dojima River, which runs past the northern side of the site. We are also building a pedestrian bridge connecting Nakanoshima 3-chome to Nakanoshima 4-chome with plans to open the bridge to the public next year, in conjunction with the opening of a museum of modern art that has been located in the area by the city of Osaka. This will increase foot traffic in the Nakanoshima district, and will contribute to the enhancement of pedestrian safety by separating walking areas from those used by cars.


Disaster Prevention Measures [Disaster Prevention Drills]

 In order to provide office buildings where people can work with peace of mind, we conduct annual disaster prevention drills at our buildings. With the aim of improving tenants’ knowledge of disaster prevention, the drills include confirming evacuation routes, as well as exercises conducted at spaces such as on the roof of the building where employees can experience a smoke-filled environment and practice using fire extinguishers with the cooperation of the fire department in charge.

Nakanoshima West Water Sprinkling Project

 Since 2013, we have been carrying out the Nakanoshima West Water Sprinkling Project in Nakanoshima area in Osaka every year together
with local companies. This project involves sprinkling water on streets to create a cool sensation in summer which has been a long-standing Japanese wisdom for curbing the heat island effect.

Nakanoshima Litter Cleanup Activities

 Since 2012, we have been involved in litter cleanup activities along walkways and the surrounding area from the Oebashi to the Tamaebashi which cross the Dojimagawa together with local companies in Nakanoshima area in Osaka every year.

* Activities were cancelled in 2013 due to rain

Chiyoda-ku Disaster Response Training Concerning Stranded Persons

 We have been cooperating in disaster response training concerning stranded persons together with companies and groups in the Akihabara Station area every year since 2010 with the purpose of providing a support system to those who find it difficult to get home after an occurrence of a major disaster.


AED Machine Installation and Life-Saving Courses

 AED machines are provided in major buildings to be easily accessible by tenants and visitors. In addition, Group employees take courses on how to use the AED machines and emergency life-saving techniques.


Osaka Classic

 The Osaka Classic is a classical music festival which started in 2006. The main venues for the concerts include parts of office buildings and cafes so even those who are not familiar with classical music can enjoy it. Daibiru has provided spaces with an atrium as stages in our Nakanoshima Daibiru Building, the Daibiru-Honkan Building and the Shin-Daibiru Building to a number of different orchestras including the Osaka PhilHarmonic Orchestra since September 2009, as a way to contribute to local cultural activities.

Donation of Dojima Park

 In March 2015, we made contributions to the city of Osaka by making improvements to Dojima Park on the south side of Shin-Daibiru Building together with its construction. The land for Dojima Park was originally a park with green area which we created and donated to the city of Osaka in 1959. After this park was cleared away to make room for an expressway, it was reconstructed in 1977.
However, the park became dilapidated so it went under renovations after consultation with the city of Osaka and the local community.
The latest improvements to this park include measures against illegal parking and increased lighting along with improvements of pavement and greenery to create a bright and clean park.

Living Architecture Museum Festival Osaka

 We participate in the Living Architecture Museum Festival Osaka, which is the Osaka equivalent of Open House London, opening buildings to the general public free of charge so that people can experience architecture first-hand. To date,our company has conducted guided tours of the Daibiru-Honkan Building and workshops for children, etc.


YMCA International Charity Run Love on the run

 As a sponsor company, we supported the “23rd Osaka YMCA International Charity Run 2017” held in October 2017, with our employees and their families participating in the event as runners.
This event is held with the goal of supporting children with disabilities, and participation fees and contributions to the charity run are used for a support program for disabled children conducted by the YMCA. Daibiru plans to continue sponsoring this event.

YMCAインターナショナルチャリティーラン Love on the run

Social Contribution Activities in Vietnam

In Vietnam, where our company started business in 2012, we have been carrying out social contribution activities in the hope that we develop together with city areas by contributing to solving local and social problems.
In 2021, the Company and local subsidiaries in Vietnam donated total 600 million Vietnamese dong (equivalent to approximately 2.9 million yen) to the COVID-19 Vaccine Fund, which was established to import and purchase vaccines and study, develop and implement infection control measures against COVID-19. We also implement other initiatives including charity events to support orphans and homeless people living in institutions.


Donation Ceremony with Hanoi Hoan Kiem Fatherland Front, one of contacts for donations to the COVID-19 Vaccine Fund

Joining the UN Global Compact

 The Daibiru Group has joined the “UN Global Compact.” The UN Global Compact, declared in January 1999 by the former United Nations Secretary General Kofi Annan and established in 2000 at the UN Headquarters in New York, is an initiative that calls on companies to voluntarily support and practice in their corporate activities ten universally accepted principles in the four areas of human rights, labour, environment, and anti-corruption. Recognizing that the “Group Code of Conduct” and these ten principles share a common philosophy, we will pursue our sustainability initiatives even more vigorously through participation in the “UN Global Compact.”

Environmental Activities

Shin-Daibiru Building Dojima-no-mori

“Shin-Daibiru Building Dojima-no-mori” inherits the spirit of the former Shin-Daibiru Building rooftop tree garden and with the concept of “a forest that is good for not only people but also other living things” we have replanted some of the trees planted in the former building’s “rooftop tree garden,” including Japanese zelkovas and maples that are around 50 years old, and in addition we use primarily indigenous varieties of trees to create a green space of approximately 1,000 tsubo, the same as in the former building. Due to these initiatives, we became the first in West Japan to acquire AAA evaluation, the highest rank, in JHEP Certification which evaluates contributions to the ecosystem.

Acquired AAA, the highest rank in the JHEP Certification / Acquired 2014 Five Stars, the highest rank in the DBJ Green Building Certification/Acquired S, the highest rank in CASBEE Osaka Mirai (Osaka City Comprehensive Assessment System for Built Environment Efficiency)/Received the Nikkei Inc Prize, Rooftop Greening Section of the 15th Competition for Specialized Greening Technology for Rooftops, Wall Facings and New Green Spaces/Received the Organization for Landscape and Urban Green Infrastructure Chairman’s Award, Green Business Activities Category at the 36th Green City Awards/Received the Governor of Osaka Award, Landscape Design Category at the 6th Green Town Planning Award (Osaka Landscape Award)”/Received the Governor of Osaka Award and the Biodiversity Award in the 10th Osaka Outstanding Greening Award/Certified as a City Oasis under SEGES (Social and Environmental Green Evaluation System)

Note that an external organization carried out an organism monitoring study in FY 2016 and FY 2020 after the completion of “Shin-Daibiru Building Dojima-no-Mori“, to specifically ascertain the contribution to the ecosystem and the results confirmed that a food chain had been established to some extent in Dojima-no-mori. For birds and insects, this kind of habitat environment is valuable in a city, so we were evaluated as having made a large contribution to the ecosystem.


“Shin-Daibiru Building Dojima-no-mori” Organism Monitoring Study Results

Study implementation period
First period: April 2016 to March 2017
Second period: April 2020 to March 2021
Species confirmed by the field study
Bird species
First period:15 species
Second period:18 species
Confirmed species include the Japanese great tit, brown-eared bulbul, Japanese bush warbler, Asian stubtail,
Oriental turtle dove, and the Japanese white-eye
Insect species
First period:54 species
Second period:68 species
Confirmed species include the Asian mantis,the blue-tailed forest hawk dragonfly,
and the common bluebottle butterfly 
Image of the ecosystem pyramid
* Image of the ecosystem pyramid of Dojima-no-mori (all of the photos were taken locally)

Global Warming Countermeasures and Contributing to the Creation of a Recycling-Oriented Society

Reduce Greenhouse Gas (CO2 Emissions) and Control Energy Use

The CO2 emissions*1, energy use, and their respective intensity (per operating floor area) from Company buildings*2 over the past five fiscal years are shown on the right. Although the operating area and the amount of energy use vary from year to year, intensity is on a downward trend due to initiatives aimed at reducing environmental impact, with the impact of COVID-19 also playing a role in fiscal 2020.

[Lower environmental impact of air conditioning]
In addition to the use of low-emissivity (Low-E) glass in windows, we utilize louvers and eaves in buildings equipped with them to shield offices from sunlight, dissipating solar radiation and reducing the need for air conditioning. This system also monitors CO2 concentrations to increase or restrict the cooling effect from outside air during times of the year when temperatures are moderate.

[Transition of LED lighting at existing buildings]
We are taking active steps to switch to LED lighting, which has a long life and highly efficient energy consumption and is eco-friendly. We plan to complete the transition by roughly 2024, which is ahead of the original schedule, having met approximately 40% of the overall target as of March 31, 2020.

[Adopt emissions-free energy]
We are considering the adoption of emissions-free power*3 toward the realization of a carbon-free society.

  • CO₂ emissions

    CO₂ emissions
    • CO₂ emissions (t-CO₂)
    • CO₂ emissions intensity (t-CO₂/m²)
  • Crude Oil Equivalent Energy Use

    Crude Oil Equivalent Energy Use
    • Crude oil equivalent energy consumption (kl)
    • Energy consumption intensity(kl/m²)

Reuse and conservation of water resources

On the right of this page show water use and intensity at Company buildings*1 (per square meter of floor area) over the past five fiscal years. In fiscal 2020, the amount of water use was reduced by about 25% compared to fiscal 2016, and by about 28% in intensity, as a result of fewer people utilizing the buildings due to COVID-19. The Company strives to utilize water resources effectively through efforts such as adopting the latest sanitary fixtures when renovating or constructing new buildings as well as utilizing rainwater for irrigation.

Water use

Water use
  • Water use (m³)
  • Water use intensity (m³/m²)

Reduction of waste emissions and promotion of recycling

The waste emissions and intensity (per operating floor area) of our properties*4 over the past four fiscal years are on the right. Waste emissions have varied with each fiscal year for reasons that include the acquisition of properties, but intensity is on a downward trend. The Company strives to minimize waste emissions and has established a system for the sorted collection of waste to promote recycling.

[Reduction of waste and proper disposal throughout the life cycle of buildings]
A variety of waste is generated during the construction and demolition of a building. We manage and dispose of harmful substances and substances that pollute the environment in a proper manner and in accordance with laws and regulations. In addition, we collect and reuse concrete waste and chlorofluorocarbons and lithium bromide used in air conditioning equipment. As part of the ongoing demolition and reconstruction of the Midosuji Daibiru Building, the materials from the underground body of the existing building are being used for an earth retaining wall. We strive to reduce waste in the operating stage as well. To do this, and to promote recycling, we have established a system for the sorted collection of waste.

Waste emissions

Waste emissions
  • Waste emissions (t)
  • Waste emissions intensity (t/m²)

*1 Scope of data: 27 office and commercial buildings owned by the Company (buildings subject to the Act on the Rational Use of Energy)

*2 Calculated using emissions coefficients by energy supplier; therefore, CO2 emissions and emission intensity are impacted by fluctuations in these coefficients.

*3 Electricity derived from renewable energy sources with net-zero CO2 emissions as proven through non-fossil fuel energy certificates.

*4 Scope of data: Among buildings subject to the Act on the Rational Use of Energy, office and commercial buildings owned by the Company for which calculation is possible.