This is NOT Lissachatina fulica. It is a harmless native species found widely through SE Qld and NE NSW. Really need to see a better photo showing the whole shell but there is enough in this image to identify to genus/species.
It is probably Bradybaena similaris Family Bradybaenidae (Camaenidae) 'Asian Tramp Snail' or 'Asian Tramp Snail'. Invasive horticultural pest from China.