It is estimated that about 10 million tonnes of construction and demolition (C&D) waste is generated annually in Tanzania. This waste is expected to increase even more because of population increases, urbanization, industrialization and commercialization which results in more utilization of natural resources as well. The stock of material resources (raw materials) decrease worldwide and any excessive material extraction puts pressure on natural resources, including ecosystems which depend on this resource for survival. This justifies the research to find a proper technology for recovery (reusing, recycling and upcycling) of C&D wastes which would alleviate the excessive extraction and utilization of natural resources. The research aims at solutions to use the C&D waste to produce building materials (for example concrete blocks) which is a commonly used building material in Tanzania. To ensure the sustainability of such building materials, the environmental, social and economic parameters have to be assessed by using a Life Cycle Assessment (LCA) tool. Life cycle assessment is a technique for assessing the environmental impacts associated with a product over its life cycle. Currently, most of Life Cycle Assessment tools applied are developed in developed countries such as SimaPro (Netherlands), INVEST (United Kingdom), BEES (United States) etc. Their direct applicability is limited due to the fact that they are developed in countries with different environmental conditions as well as economic status. Therefore, this research paper discusses the identification of an appropriate Life Cycle Assessment tool which can be applied in research to determine the extent to which building products resulting from construction and demolition waste are sustainable in ecological sense
