The method of formalizing the process of building a master plan has been proposed that allows the automation of the phases of its creation. Subsystem of unified specialized GIS was built as an example of public joint-stock company "Alchevsk Iron and Steel Works." The model of interaction databases, maps and satellite images was developed, which are the basis for the creation of a master plan. The optimization was made of model of interaction between components of the subsystem of GIS.
formalization, master plan, step, sub-step, a structural element