110,000 architectural monuments currently exist in Bavaria. Monument owners, authorities, associations, and other organizations are working to preserve the architectural heritage. Even though this endeavor is mostly successful, some cases are currently at risk. According to estimates around 3,500 of these listed buildings are at risk in Bavaria. This number represents around 3% of the listed buildings. Although the number of endangered objects seems small, each of the endangered buildings is unique and irreplaceable as a contemporary testimony. For this reason, it is essential to know the objects. Therefore, the Bavarian State Office for the Preservation of Monuments and Sites developed a digital database and a data management system based on a GIS to record and manage Bavaria's endangered architectural monuments. An interactive map provides information on the building quickly and easily. An overview of the endangered cultural heritage can be created. In addition to recording the cultural heritage at risk, a database with best practice solutions for sustainable refurbishment is being developed. This database offers a collection of different solutions for different types of buildings (e.g., barns, mills, or castles) that also consider local conditions. The best-practice solutions must be validated and, if possible, monitored after implementation. The object-specific approach of monument preservation is thus transferred to a higher level. The networking of the endangered inventory, therefore, serves to save not only individual buildings but entire groups of buildings.