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The building design process is composed of design processes for the building's various systems. The process for each system design should be based on requirements defined early in the programme and executed by a multidisciplinary team led by a design coordinator responsible for the coordination and integration of all processes. In Brazil, building firms tend to develop fragmented designs with little regard for the advantages of integrated design. This hinders the use of new solutions, such as innovative façade technologies, that could enhance building performance and increase the efficiency of construction and maintenance. The façade influences building performance and construction and maintenance costs. It is a system that requires a specific development method and extensive consideration during the design process. In this context, a conceptual model of a commercial building was proposed to develop integrated construction and renovation designs of building façades. This article describes the model, which was prepared based on the literature and on case studies involving construction projects in Brazil and France. [ABSTRACT FROM AUTHOR]