Exploring the current challenges and emerging approaches in whole building life cycle assessment
The environmental impacts of building stock has received significant attention as buildings release one third of total greenhouse gas emissions. Whole-building life cycle assessment (WBLCA) has become a trend to address this limitation by ensuring best environmental performance of a building However, the current WBLCA development faces many challenges which makes it hard to create reliable and comparable results. The study aims to conduct a critical literature review to summarize the current challenges on WBLCA applications, and the emerging approaches that might address these challenges. Three main challenges are listed: variances on goal and scope definition, building structure complexity, and varieties on LCA database and methods. Emerging approaches are also presented to address these challenges including integration of BIM into WBLCA and EPD applications in impact assessments. Findings of this study could support researchers and decision makers with the most popular approaches to conduct WBLCA and achieve reliable outputs.