There is a garden near this building, and gps is not accurate enough to say if building is good or not but I'm agree with you. For me, 2 buildings into one like that, is a problem. We must merge 2nd into first, no ?

I have a question about that kind of case.
There are some building that have for example 5 other building around him. But in reality, it's only balcony, or entrance etc. What must I do ?
Add the same thing that main building ?

Thanks for your help