Post-closure care of landfills is intended to reduce adverse impacts on the surrounding environment, and an important component of this process is capping. Landfills represent large areas of land that cannot be built on, and commercial use of landfill after closure has a lot of challenges. It is common for landfill sites to be green spaces initially and subsequently transformed into recreational parks or sports fields in highly populated regions. The emergence of phytocapping as a demonstrated and regulatory accepted alternative capping technology has led to a focus on ecological rehabilitation as a viable after-use for landfills due to their inherent characteristics that are similar to a natural system.Ecological rehabilitation is seldom considered a possible after-use for landfills, even though most landfills end up vegetated in the long term.Identification of ecological value present in a location is highly valuable to drive the decision-making process and, in turn, improve connectivity, ecological health, and biodiversity of a region. This study employs Koalas as an umbrella species to assess the ecological value and connectivity potential of a landfill. By using the Koala as a representative species, this research aims to evaluate the broader ecological implications and connectivity opportunities associated with a landfill site. This study uses buffer analysis and overlay analysis for preliminary identification of the potential for landfills in Koala habitat creation and connectivity. The majority of landfills in the South East Queensland (SEQ) region exhibit significant potential for ecological value through rehabilitation efforts. The findings demonstrate that landfill rehabilitation can be used to provide habitat for threatened species and improve the connectivity of bio-corridors. To maintain environmental sustainability, ecological conservation, and ecological connectedness, regulators and stakeholders are advised to place a stronger emphasis on landfill after-use. The results show why ecological rehabilitation should be given higher emphasis in the waste management industry and point to the missed opportunity for habitat creation, connectivity, expansion and increase of green space.