https://rapideditor.org/ can be incredibly helpful in those situations. It’s not perfect (i.e. you may need to tweak the shapes), and it doesn’t usually get the newest subdivisions, and it’s made by Meta (Facebook)… but it can get buildings in an empty area very quickly.
It was my primary tool to complete all the buildings in my own city (of almost 200,000 people) when only major stores were mapped previously.
https://rapideditor.org/ can be incredibly helpful in those situations. It’s not perfect (i.e. you may need to tweak the shapes), and it doesn’t usually get the newest subdivisions, and it’s made by Meta (Facebook)… but it can get buildings in an empty area very quickly.
It was my primary tool to complete all the buildings in my own city (of almost 200,000 people) when only major stores were mapped previously.