Real-scale plan, where it shows a data collection of all the existing information of the place such as lengths of walls, layout of stairs, kitchens, bathrooms, and any equipment and/or room that can be evidenced that is located in the work area at intervened, this compilation is a set of data that can be obtained photogrammetry, by conventional or laser sizing of the place where the work will be carried out, be it an addition, remodeling or new project.