The premises of the family-owned company for building materials in the centre of Sieghartskirchen / Lower Austria were constructed over the last centuries. Currently the developed buildings and premises require a complete restructuring, because of the perseverative modifications and extensions of the buildings. This project creates a new architectural shaping of the sales-, workshop-, office- and residential-building for the improvement of the operational, architectural and urbanistic status. An architectural design for the reconfiguration of the operational sequences, structural and urbanistic deficiencies and the deficits of the green areas results from the status analysis and the constructional history. The aim of this project is to design a remodelled premises out of the cramped structures and in compliance with all requirements (structural-physical, health and safety, -cultural heritage preservation- in terms of preservation of the buildings, -), which enables an economically process and creates an attractive residence and work place for the employees, customers, suppliers and not least for the occupants. Besides the new shaping of the existing premises also new business- and residential-buildings are created, which vastly improve the quality of the location.