Conservation of historical stones is important for restoration, but there are cases where new stones are required to be used. In cases where the degree of damage to the stones on the walls of historical buildings is quite high, or if the original material is lost, their modernization, modification and reconstruction are required. In the restoration work, it is a challenging task to find suitable stone resources that are compatible with the monument in terms of strength and appearance. This study covers the method of analyzing and evaluating the possibility of replacing the original stone for the repair of the walls of historical buildings. For this purpose, a case study was carried out in Kayseri Historical Sümerbank Cloth Factory, which is one of the first industrial structures in Turkey belonging to the early republican period. In this article, it is aimed to create a model that provides the strength, aesthetic and compatibility evaluation criteria for the destroyed stones on the factory walls and the new stones that can be used instead within the scope of the restoration project prepared to transform Kayseri Historical Sümerbank Cloth Factory into Abdullah Gül University Sümer Campus, This model will avoid expensive and time-consuming analyzes, preserve the historical texture with minimal intervention, and may set an example for future restoration works that do not have material records. This study presents not only an aesthetic evaluation in the selection of stones, but also a model that reveals the importance of choosing stones according to their physical and mechanical properties.