The proper use of BIM objects is of paramount importance in the design of a BIM model. The BIM object is not only intended to graphically represent an element in 3D, it must also be informed and correctly configured. The information of a BIM object goes through its sizing, its standards, etc., everything that is useful for the proper execution of the object in question during construction, but not only. The object must be logged so that the techniques or other objects related to it have the information necessary for the proper coordination of all the elements. For example, when installing sanitary facilities, one must be able to know the sizing of the evacuations as well as the introductions necessary for its proper functioning. The configuration of the object, if carried out correctly, gives the possibility of modifying the object (height, length, display, etc.) in a simple and automated way. The configuration also joins the information of the object. For example, a standard door could be transformed into an automatic door with a simple click, changing its information and adding an automation mechanism. Therefore, a well-designed BIM object library will save you considerable time when drawing, searching for information and even calculating quantities. In a digital model, we do not draw geometric shapes, but BIM objects. These objects are essential to guarantee a high standard, but also to allow the creation of a virtual showroom in connection with the program. Creating a library is a time-consuming process that will save you valuable time when starting a future projects.