Integrating disaster resilience into green rating systems - a modification of the Sri Lankan green building rating tool

Purpose The purpose of the study is to mainstream the disaster risk reduction (DRR) and disaster resilience measures into the GreenSL (R) building rating system in Sri Lanka to demonstrate a more holistic approach in achieving sustainability with resilience. Design/methodology/approach First, a comprehensive literature review was carried out on green building practices and rating tools, natural hazards and DRR and global and local frameworks. Next, criteria were developed incorporating the disaster resilience aspects through eight expert committee meetings and included the rating tool in three levels. Finally, 11 green-certified buildings from the Green Building Council of Sri Lanka were reevaluated using the new disaster resilient GREENSL (R) rating system for built environment as a validation for the new tool and to analyze the new certification levels. Findings All the green-certified buildings in hazard-prone areas dropped their certification by one level while the buildings in nonhazard-prone areas remained in the certification after being evaluated by the new DRR-incorporated rating system, which recommends the use of new tool for the buildings in hazard-prone areas. But due to the rapid changes in climate and the unpredictable trends of natural hazards, the use of new DRR incorporated GREENSL (R) rating system for built environment for the certification of buildings is highly endorsed. Originality/value This is the first research study based on the GREENSL rating system. And it is the first effort to incorporate DRR aspects to any rating tool in Sri Lanka. The projects that were evaluated for the validation of the new tool are the actual projects which obtained green building certification. Also, it is apparent that this study has gone some way towards enhancing the understanding of blending the sustainability and resilience in rating systems for built environment.