Architectural plans are graphic and technical representations of a house or building which, as a whole, provide an understanding of its various characteristics before, during and after construction. Thus, for all applications for construction permits, standard architectural plans will be indispensable for the assessment of the construction permit dossier by the administrative authorities. Through the realization of a set of drawings, from the free-hand sketch to the realization of detailed technical drawings by computer, the architect transforms the needs and wishes of his client, the project owner. Thanks to his technical expertise and aesthetic sensibility, the clients’ preferences are formatted into a set of increasingly precise plans that guide the proper integration of the different elements and different specialties during the construction.