This was/is a perfectly valid map note. 

Building heights, floors, facaudes, roof types, and other details cannot be mapped appropriately when someone has lumped multiple buildings into one blob. In this case, I was using StreetComplete ( https://wiki.openstreetmap.org/wiki/StreetComplete ) and was unable to solve its Addresses quest, the first of many it would present relating to individual buildings.

Please leave valid map notes for others to resolve.

I will take care of this one.