Floor area calculation maisonette apartment

Guun Aaamd

Regardless of my conscious distinction between living area / usable area:

In a maisonette apartment there are usually two levels, in the specific one to which my question refers, they are stacked on top of each other in such a way that the upper level - in the top view - does not protrude sideways beyond the lower one (as is often the case).

Now my question:
Is the usable area (floor area without any roof slope factors) defined by the total floor area of the lower part of the apartment, or is the area of the gallery also included here?

I want to sell and provide accurate information.

Regardless of the difference between living space / usable space as I understand it: [...] (floor area without any roof slope factors) [...] or is the area of the gallery added here?

Where do you get the belief that you are aware of the meanings of the terms?

Areas of maisonette apartments are not in the least dependent on calculating whether the upper floor is above one's own lower floor or e.g. half above the lower floor of the neighboring apartment. Galleries are not calculated like balconies, but exactly with their full area as if they had walls at room height all around instead of the railing. But if, for example, there are sleeping galleries that do not have full standing height, this must definitely be taken into account. Of course, both floors are included in the calculations.

Believing doesn’t mean knowing anyway, so it doesn’t really matter where it comes from. So I think I know the difference between living space and usable space, no, I’ll say it—I know the difference, I think. But that wasn’t the question at all, maybe it was also formulated too extensively.

What I meant: The usable space of the apartment: is it the floor area counted only once, meaning the lower area without the gallery (the area above) also included, or is it added to it?

I think I understood your answer, it is added to the total usable space, although the objection about the standing height is not entirely clear to me. It is not standing height throughout—I also thought the slope factor was only important for the living space, not for the usable space.

The usable area is (I believe) the amount of carpet needed to cover the entire floor of the apartment (including areas under stairs and in ancillary rooms, basements), regardless of which floor and where it is located.

But you take quite a long time for all your investigations.

Living space is only partially counted, for example between 1 and 2 meters ceiling height, I think calculated at half. This applies to sloping ceilings. You don't really want to sell, right?

Yes, I want to sell, this was an ongoing (slow) renovation, and NOW I am in the process of marketing the apartment (to finally move on to the house/cottage). Somewhere, someone mentioned having overheard that the usable area of a gallery apartment may only be listed as "single-story," meaning without the floor area of the gallery (basically the apartment's floor area minus the walls). That’s where my question comes from. I can't really imagine that this is true, but how would I know.

@ molotov - the floor (in the sense of the definition as a storey) is the same for both levels in a typical gallery apartment; the upper part is not considered a second floor or storey.