Embodied energy represents the sum of the energy consumed during the process that includes extraction, production, transportation of building materials. Embodied carbon is the measure of how much greenhouse gas is released to the nature during the production process of the material. In this study it’s aimed to draw attention to the pre-construction phase of buildings and to evaluate the energy consumed and carbon emission in the context of structure systems.For the study “Life Cycle Assessment (LCA)” method which measures embodied carbon and energy is used. By the help of this method, embodied carbon and embodied energy of the materials used in the building can be obtained as numerical data. A wooden single-detached house in Konya was chosen as case study and alternatives created with different structural systems (reinforced concrete and steel structure) and their environmental impacts were compared in the context of embodied carbon and energy. Among these three construction systems, wooden structure appeared as the most environmentally friendly construction system in terms of lowest carbon and energy values. Reinforced concrete alternative and steel alternative followed it respectively. Wooden structures have been observed to be the most sustainable alternative in the context of single-detached housing with the advantage of both low production energy and low carbon emissions.