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The construction industry accounts for approximately 40% of the global carbon emissions and is the largest consumer of materials and energy. Given the Paris Agreement target towards global net-zero greenhouse gas (GHG) emissions, significant changes are required in the design, construction and use of buildings. This study applies a qualitative approach that combines a systematic literature review (SLR) with in-depth semi-structured interviews with experts to analyse existing carbon neutrality frameworks and decision support tools; expanding current knowledge by bringing to the fore the challenges experienced in implementing these frameworks. This research effort reveals an inadequacy in frameworks for effective decision-making on decarbonisation strategies along the project lifecycle. A novel framework that breaks down the activities and decision points across the entire project lifecycle is proposed to …