This article describes a methodology to perform the dimensional control and layout of unique three-dimension prefabricated elements. The proposal allows optimizing topographic techniques and resources, reducing the time to collect and analyze data for decisions to be made at such a rate that the progress of the work is not affected. Essentially, the necessary time to check dimensions and lay out three-dimension coordinates for unique parts is reduced, both at reception, assembly and placement. For the feasibility of the proposal to be shown, the protocol has been implemented to a very complex building by specifying the techniques, devices and utensils used, some of them specifically designed to this effect.