Abstract: The invention relates to a method for using an industrial site, an associated system, and the use of the system to carry out the method. The method facilitates the use of the available area of the industrial site in an effective way so that conversion times and costs are reduced and a great freedom of choice regarding subsequent possibilities for use of existing buildings is achieved. The method subdivides the individual functions of a fully equipped building integrated into the infrastructure of the industrial site regarding the duration of use of the technical devices and, with a decreasing time in use, provides increasing modularization of these functions. The permanent functions of the fully equipped building are permanently installed, while the devices which are subject to use for a shorter time based on their purpose are embodied in a correspondingly modular and interchangeable manner.