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This article provides an assessment of the embodied and operational energy during construction and occupation phases of three main construction methods on social dwellings in Ecuador. The analysis focuses on current construction practices in the two largest Ecuadorian cities: Guayaquil and Quito, representing typical coastal and highland climates of the country respectively. A model of a social interest dwelling that follows the guidelines of the Ecuadorian Housing Secretary is defined. Three different construction methods were considered: Isolated Concrete Forms (ICF), concrete Load Bearing Walls (LBW) and traditional beams-columns Confined Masonry (CM) systems. The assessment also includes two roofing alternatives: concrete slabs defined for each construction method (S_a, S_b, S_c) and metallic alloy roofs (Z). The embodied energy assessment focuses on the materials required for each construction …