Sustainable/green buildings can save for 36% of total energy use, 65% of electricity consumption, and 30% of greenhouse gas emissions, 30% of raw materials use, 30% of waste output, and 12% of potable water consumption. Several sustainable/green building assessment tools were existed and used by both developed and developing countries. However; Ethiopia's buildings were not critically assessed and evaluated from sustainability points of view because there was no such type of studies conducted so far. This paper aims to explore the most significant and widely used as well as the basis for other sustainable/green building assessment tools such as Building Research Establishment Environmental Assessment Methodology (BREEAM), Leadership in Energy and Environmental Design (LEED), Comprehensive Assessment System for Built Environment Efficiency (CASBEE), Sustainable Building Tool (SBTool), Comprehensive Environmental Performance Assessment Scheme (CEPAS), Deutsche Gesellschaft für Nachhaltiges Bauen (DGNB), Green Mark and Green Star. The methodology employed for this paper is the selection of the 10 most commonly and widely utilized SBATs from the 57 SBATs based on desk review and document analysis. The results of the study identified that all these 10 SBATs have their own assessment categories and criteria based on many factors like climatic conditions, availability of resources plus methods employed demographic dynamics, and legal aspects of the sector for assessing the sustainable/green buildings. It distinguishes the most commonly and repeatedly used assessment categories and criteria and uses a consensus-based approach with experts in the building sectors, a four-quadrant model, and a Circular and Helical flow model, to develop a new sustainable building assessment tool (SBAT) suitable for Ethiopia.
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