“…For residential buildings footprint area is considered as key variable for estimating exposed value through market prices or replacement costs. For cultural heritage the determination of value is not an easy task, especially at River District scales, while example of prioritization of heritage items is possible at the single-asset level [26]; in fact, cultural heritage significance can range from the UNESCO World Heritage Site designation to CH items that are of interest to local communities only [22]. Finally, CH value is not strictly related to areal extension.…”