Promotion of the transition to green buildings

Thinking on the promotion of the transition to green buildings

Green buildings are builds that incorporate features increasing their environmental consideration, and they are an important factor in the pursuit of sustainable growth. This idea encompasses improvements from many different perspectives, such as greater energy efficiency, resource recycling and the qualitative improvement of the indoor environment. The investment corporation believes that working to reduce environmental burden and fulfill its social responsibilities through the promotion of green buildings should increase the sustainability and competitiveness of its businesses. To this end, the investment corporation strives to acquire environmental certifications and, from the design stage, consider the use of sustainable materials and the introduction of energy-efficient systems. We will increase our cooperation with local communities and our efforts to build green buildings to contribute to the improvement of the local environment. Through these efforts, we strive to aid the establishment of a sustainable future.

Target (KPI)

External certification

Increase external environmental certification acquisition percentage to 70% by FY2030

70%

based on total floor space

Status of environmental certifications

External Environment Certifications Achieved in Total

	Number of certified properties	Gross floor area (㎡)	Percentage (%)
Total of environmental certifications	11	545,490	91%
CASBEE	11	545,490	91%
BELS Certification	11	545,490	91%
of which ZEB Ready	2
DBJ Green Building	1	87,450	15%

As of June 1, 2025

CASBEE

The Comprehensive Assessment System for Built Environment Efficiency (CASBEE) is a system assessing and rating buildings based on their environmental performance. A comprehensive environmental performance assessment of buildings should cover energy consumption performance, resource conservation, recycling performance and other aspects of environmental impact reduction as well as consideration for the landscape. There are four assessment ranks (from Real Estate S rank to B rank). CASBEE for Buildings assessment uses a five-tier ranking system (from S rank to C rank).

For more information about CASBEE, visit the website below.
https://www.ibec.or.jp/CASBEE/english/

BELS Certification

The Ministry of Land, Infrastructure, Transport and Tourism has created guidelines for the indication of the energy saving performance of non-residential buildings in 2013 that are intended to contribute to improving the energy saving performance of non-residential buildings and providing appropriate information to the real estate market, etc. Under the guidelines, BELS evaluates and indicates the energy saving performance, etc. of non-residential buildings. BELS uses an evaluation method that is in line with the revised energy-saving standards (which came fully into force on April 1, 2014).

The certification rating for energy saving performance, at both new buildings and existing buildings, is conducted by third-party institutions, using a variety of measurements. The rating is represented using a five-star (★-★★★★★) evaluation scale.

For more information about BELS, visit the website below.
https://www.hyoukakyoukai.or.jp/bels/info.html (Japanese only)

ZEB Certification

ZEB (Net Zero Energy Building) buildings are designed and built to save energy, through highly effective thermal insulation and facilities with high thermal efficiency, aiming to achieve net zero annual primary energy consumption of the buildings by generating energy through solar power generation facilities and other means, while maintaining a comfortable indoor environment. In the BELS certification system, there are four ZEB levels: ZEB, Nearly ZEB, ZEB Ready, and ZEB Oriented.

DBJ Green Building

DBJ Green Building Certification was established by Development Bank of Japan Inc. (DBJ) in April 2011 to recognize properties with environmental and social considerations (Green Building). Based on comprehensive evaluation of target real estate properties, including evaluation of consideration to disaster prevention measures and various stakeholders’ social requirements including local communities as well as environmental features, this program evaluates and certifies real estate properties required by society and economy and supports initiatives for them. The results of the evaluation are indicated by the number of stars (★-★★★★★).

For more information about the DBJ Green Building Certification, visit the website below.
http://igb.jp/en/index.html