All buildings here are valid and appropriately rounded but are not as accurate as they could be. For example the Western most building was ~90 m^2 as you mapped it but is actually closer to 45 m^2. The accurate sizing buildings is important for accurate population estimates. Building footpritns can be the size of the roof, or smaller if the roof overhangs the walls; you can use the shortcut shift+(-/+) to scale selected features so that their size is accurate. The shadows round buildings cast help determine their size. Thank you for mapping.
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            Published using OSMCha: https://osmcha.org/changesets/166400548
            