In recent years, mounting environmental and sustainability concerns are driving the construction industry players to adopt green supply chain management (GSCM) in their organizations. GSCM is a converging sustainability approach that integrates environmental thinking and initiatives into the traditional supply chain management (SCM) practices. However, despite having various benefits, this approach has not been widely implemented. Therefore, this paper aims to reveal the challenges faced by Malaysian construction companies in implementing GSCM. A total of 160 questionnaires were distributed among contractors and consultants in Malaysian Construction Companies. Only 50 questionnaires completed by the respondents resulting in a response rate of 32%. The research found that leadership and commitment from top management as the main challenges among construction players in implementing GSCM, in addition to changing mindset and culture and government support and regulation. This finding will allow practitioners to acknowledge and prioritize the challenges embedded with GSCM implementation, thus come out with strategies to overcome the challenges. This research can be further enriched by including an in-depth study on the GSCM challenges through qualitative research.

Instead of looking into new building, this study shifted the focus to existing buildings considering the area has been less explored although the amount of energy released during the phase has significant influence towards sustainability impacts. Deriving from the situation, the purpose of this paper is to explore the potential of bridging BIM and the four-steps approach of Life Cycle Sustainability Assessment (LCSA) as an assisting tool to improve the performances of existing non-green buildings. To achieve aforementioned aim, an extensive literature review to identify the nexus between the two areas is done, as well as possibilities and challenges surfaced pertaining to the idea. Literature review process consists of several approaches including literature searching, classifying, and analysis were conducted. Based on literature review, a research gap is identified, and an initial conceptual framework is developed. The framework entails several areas of research that highlight on integrating LCSA approach, sustainability indicators and BIM functions. Apart from that, several implementation considerations to integrate both areas have been identified too. The conceptual framework presented in this study will serve as a basis to further develop an implementation framework that integrates BIM and LCSA to greening existing buildings. The final implementation framework is expected to assist project stakeholders including project manager (or facility manager), building owner, and consultants in making decision towards improving existing buildings’ sustainable performance.

Apropos to numerous environmental issues highlighted globally and locally, Malaysia has now moving forward towards new agenda of greening the cities. A positive movement trend of new green building in the country can be seen as number of projects going into green rating application are increasing yearly. Nevertheless, sustainability impact is considered as significantly small since newly developed green building represent small percentage as compared to the existing non-green building. Therefore, the idea of greening the existing building through refurbishment emerged in order to achieve wider sustainability objectives. Apart from that, supported with recent evolvement of technology and digitalization in construction industry, in lieu with governments’ strategies to adopt Industry 4.0, Building Information Modelling (BIM) has also been acknowledged and used broadly as a solution to integrate and facilitate management of information throughout building lifecycles. Considering these two areas; sustainability and BIM are continuously gaining momentum these days, this paper attempts to explore BIM’s potentials as an enabler to help greening the existing non-green building. Literature review is conducted focus on reviewing BIM and sustainability present status in Malaysian construction industry, also their relationship including examining potential areas where BIM may contribute to enhance the buildings’ sustainability performances. Based on the reviews, there is a potential of bridging the two areas considering both has becoming a national construction industry agenda since the government released CITP2016-2020. To further concur the ideas, literature reviews has also proven that the ability of BIM to facilitate various functions has enable it to support several sustainability analyses such as energy, carbon emission, lighting, water, materials and waste, building and site, and costing analysis.