The necessity to reduce environmental impacts caused by construction industry promoted the creation of several government agreements around the world, quantitative measures of environmental impacts, new materials and new techniques and concepts for sustainable projects. Reusing materials with a high index of embodied energy, such as structural steel elements, is considered a valid practice to achieve this objective. Steel reuse is more sustainable than recycling in terms of carbon dioxide emissions, embodied energy, processing and, in some cases, transportation. The DfD (Design for Disassembly) is a concept allied to the practice of structural steel reuse and other building materials, planning future disassembly and contributing to the supply chain with reusable materials. Moreover, BIM provides a promising environment for the exchange of information throughout the buildings life cycle, as well as a new workflow in the conceptual design phase, which improves the decision making process in the context of sustainable constructions. This work proposes a new dynamic in terms of information exchange through an IDM (Information Delivery Manual) for developing a project with low levels of environmental impact using LCA (Life Cycle Assessment) and material reuse. A building s LCA study was used to develop the analysis and interpretation of environmental impact of projects conceived using the proposed IDM. The results indicate that the development of a sustainable project does not significantly interfere with the economic, practical and aesthetic interests and that including LCA is an important parameter in decision-making at the design stage to improve the environmental performance of the materials used.