To shed a bit of light on my reasoning for this note, the combination of the "shed" + the atypical lot allocation on NSW Base Map often suggests the presence of sydney water assets, which are often located at the end of a co-access driveway. The shed was maybe 10% of my reasoning, most of it was base map lot + driveway. Confidence of anything actually there is low, hence vague note comment. The new bing imagery doesn't seem to show anything notable. I'm happy to close this one out. Ty for checking