Unfortunately, many buildings are not aligned to their footprint or incorrect mapped.


This task ought to be mapped with the ESRI world imagery as background.

About mapping of high buildings.  They show a large shadow.
Check here how high buildings ought to be mapped.

https://docs.google.com/document/d/1z7uDwYm4oNmlexHIhJxGCjPpNhCQAgRia5aEJr_4MwM/edit?usp=sharing

Many tall buildings have a small building, a superstructure, lift building or something similar on the roof, do not map it as a separate building, just map the roof lines of the complete building.

Best regards and keep mapping 

