Given Australia lacks a complete and nationally consistent framework, this paper is the first to offer a comprehensive regional analysis across Australia that links projected Sea Level Rise/Surge effects with the economic losses on land use and property by sub-region and sector. Projections of SLR/S -related damages at the sub-regional level, driven by local geomorphology, coastal risk, asset exposure, and socioeconomic vulnerability, vary sharply across Australia. Location and values of property and land-use sectors also vary sharply between sub-regions, which generates large differences in economic damages across the country. In addition, the more fine-scaled and subnational modeling contained in this study captures local geomorphology, property values, and infrastructure density, helping councils and states to plan targeted adaptation. In this paper, specifically, a GIS-based framework is developed to project SLR inundation hazards in Australia, utilizing SLR height projections from Kirezci et al.,7. The methodology converts projected SLR heights into Australia’s digital elevation model (DEM) data and applies a ‘bathtub approach’ to delineate inundated areas. By integrating these inundation maps with digital economic datasets, this paper estimates future physical and economic damages at a consistent sub-regional scale under two key climate change scenarios.