All 4 bunches of 3 buildings appear to be the same building per bunch as shown in the picture, for all of these (except the southernmost one, yet). I've put in the apartment numbers where the building entrance is which are all connected via the street's pavement along with a straight driveway directly next to said pavement (all paths & roads respectively have the same type of material)

via StreetComplete 51.1

Attached photo(s):
https://westnordost.de/p/138082.jpg