Address on area, on point or both?

General talk
1

I found multiple buildings marked as areas and on top of them there’s point with an address (e.g. https://www.openstreetmap.org/way/395790343)).

Wouldn’t it be better if address was part of the area and there wasn’t a point? Or is there some advantage in having both?

2

That depends on whether the address applies to the whole of the area.

3

A building (area) can have more than 1 address (different street names with different housenumbers).
You can put the address node(s) near the building entrance(s).

4

There can be also some formal rules - in Poland an address is attached to a building, not the area (it’s a general rule - there are also some exceptions, of course). In other countries there can be other rules however.

5

Oh, and by area I mean a thing on the map that is created using “area” tool. In this case – building.