G-SEED Certification Status and Improvement Strategies for Non-residential Buildings-Focusing on 2016 to 2023 Trends

In this study, the certification status and scoring trends of nonresidential buildings that received the Green Standard for Energy and Environmental Design (G-SEED) certification between 2016 and 2023 were analyzed.The aim was to identify trends and areas for improvement within the certification system.Certification data were examined based on various factors, including year, rating, region, certification version, building area, and public/private classification.Further, certification scores were analyzed by final grade and specialized field scores.The analyses revealed key characteristics and trends in the evaluation of nonresidential buildings under the G-SEED system.First, significant differences were identified in building area, public/private ratios, average scores, and specialized field scores depending on building use.Future revisions to the G-SEED system should consider refining the classification of building use and adjusting the evaluation criteria accordingly.Second, private buildings exhibited a higher proportion of certification acquisition than that of public buildings.To further encourage certification in the private sector, policy support and incentives (e.g., tax benefits) are recommended.Third, school facilities exhibited different trends compared to other building types, with relatively low scores.This finding underscores the need for evaluation criteria and policies that address specific characteristics of school facilities.Fourth, the analysis of specialized field scores indicated that the operation and maintenance (O&M) field contributed the most to overall scores, highlighting the need for revisions to balance the difficulty and discriminative power of certification criteria.Enhancing the evaluation framework and redefining the direction of each specialized field are crucial for improving the G-SEED system.