This study primarily aims to explore the applicability of the LEED V4.1 O + M:EB rating system to commercial bank branches and attempts to establish a successful platinum-level certification case within a commercial bank branch while also examining the associated challenges in pursuing such sustainability certifications.

Fig. 4. IAQ monitor at the project site.

Technology Overview
This study establishes the first platinum certification for commercial bank branches. The successful approach was further confirmed in an additional case. Good operation in buildings can lead to the highest level of certification achieved. Green building certifications foster excellence and identify areas for improvement. The certification fee is 1.42 % of the construction cost, obtainable in 3 months.

Applications & Benefits
The study elucidates the applicability of the LEED V4.1 O + M:EB rating system in commercial bank branches; the results for certification levels, certification cost, and certification time all exceeded expectations. These findings were demonstrated through the success cases of E.SUN Commercial Bank's Linyuan and Nanzi branches, which became the world's first two to achieve platinum-level certification. Further research is warranted to validate these insights and explore the broader applicability across diverse regions and organizational frameworks. The progressive steps undertaken by E.SUN Commercial Bank underpin the pivotal role commercial banks could play in advancing environmental sustainability through the LEED V4.1 O + M:EB certification, thereby contributing to global sustainability endeavors.

Abstract：
Environmental, social, and governance frameworks promote climate awareness, driving firms to balance energy-saving with profit. Although green building projects are noteworthy, enhancing the energy efficiency of existing buildings is crucial. The Leadership in Energy and Environmental Design (LEED) V4.1 Operations and Maintenance (O + M): Existing Buildings (EB) rating system is favored; however, there is a lack of platinum-level cases and research regarding its applicability within commercial bank branches. This study aims to test the applicability of the rating system in commercial bank branches to achieve platinum-level certification. Two bank branches were selected to ensure reproducible findings. The study elucidates the applicability of the rating system in commercial bank branches; the results for certification levels, certification cost, and certification time all exceeded expectations. These findings were demonstrated through the success cases of E.SUN Commercial Bank's Linyuan and Nanzi branches, which became the world's first two to achieve platinum-level certification. This study summarizes a structured approach, enabling both branches to keep the certification costs under 1.42 % of the total construction cost, reduce the certification application time by 21 %, and attain platinum-level certification. The structured approach and insights derived from the application process, as illustrated in this study, provide a replicable and reproducible model for other commercial bank branches worldwide.

LEED applicability in bank branches: A study of the World's first two platinum cases
Author：Li Zong-Yi, Cheng Hong-Ping, Cheng Chen-Chi
Year：2023
Source publication：Journal of Building Engineering Volume 80, 1 December 2023
Subfield Highest percentage：99% Architecture # 1 / 189

https://www.sciencedirect.com/science/article/pii/S2352710223023057