Floor plan single-family house 110m² - ground floor + upper floor - first draft room layout

EG: We actually wanted to integrate the fireplace into the living room

The fireplace does not fit at all. It gets very warm about one meter around it, the cushions would smolder. You also can't sit there. How is such a narrow room (living room) supposed to be furnished well? As already asked: can the attic or basement somehow be later converted as a retreat??

the pantry should be much smaller (only a mini storage room)

But please not in the kitchen comfort zone. The kitchen needs light and space for the furniture.

Isn't the hallway of 5.8 sqm also wasted space? Couldn't it be better arranged?

You can open it towards the open space. But as you yourself noticed, sometimes there is activity with guests and your own family, so I would rather choose a hallway structure with a wardrobe and open the living room. Space needs space. There is not enough room for separations outside the bedrooms. Possibly a kitchen with a small seating area (folding table instead of a counter) that can be closed when guests come. But for something constructive, more input from you really needs to follow here.

Please always upload the original floor plans from the builder, too many details are lost in the amateur redrawings. I read "Stiege" as a reference to a construction site in Austria (?), and I am not quite clear what you even have to say here: with row houses, the buyer typically only has a very small selection of decision points: 1) the floor plan layout in the WC / cloakroom area, 2) kitchen closed or open to the living area, 3) partition wall between children’s and guest room yes/no, 4) optional room as a second bathroom or a second storage room. Among other reasons against a children's bathroom in general, I specifically see it as "not advisable" in the size category of 110 sqm. The missing attic floor irritates me. Otherwise, I see a house of this size more as a middle house than as a life project. What would have been the wishes that were not implemented?

For a classic RH, the kitchen/pantry is (much) too large.

Expansion of the attic will not be possible due to the 110 sqm funding/limitation.

EG: We actually wanted to integrate the fireplace into the living room, and the pantry should be much smaller (just a mini storage room). Thanks for the tip about the bathroom, it was actually only supposed to be a small guest toilet with a sink and toilet.

A fireplace is great and requires space – if only for fire protection reasons. Plan for at least 2.5 sqm of floor area that cannot be used for anything else. Alternatively, consider a gas fireplace, so you have flames and space – and no problem with the heating design either.

OG: Since we have two children, we thought it would be clever so that as parents you still have privacy even if our children’s girlfriends/friends are around. Isn’t the corridor of 5.8 sqm wasted space? Couldn’t it be divided much better?

Very understandable thought. The organizational solution would be: guests use the toilet downstairs. No teenage visitor minds that. Furthermore, it might be great later to turn a basement room into a youth hangout – then you rarely cross paths and there is more space to spread out.

DG: It is a regulated apartment according to local housing subsidies; anything over 110 sqm is no longer subsidized with a contribution (with a considerable amount), which would then be lost.

That is a very good argument not to develop the attic. How long is the obligation to the sqm agreement? Run supply pipes upstairs now; a room with a bathroom can be created later (that’s how we did it in our terraced house). Maybe that will work out timewise with the children growing up.

Isn’t the corridor of 5.8 sqm wasted space? Couldn’t it be divided much better?

Some space for storing outdoor items by the front door is very practical – especially with smaller children. In our terraced house, we had a 2-meter-wide Ikea Hopen wardrobe in the hallway; that was already tight. From experience, with children there are many shoes and "mobile toys" from Bobby cars to scooters, inline skates, longboards, etc. in the hallway. That requires space. Bringing these things down to the basement all the time is impractical; a garage opposite would be good, and children can (to a limited extent) learn to use it.

Drainage of the bathroom right through the kitchen!

Maybe, lifestyles are different. Nevertheless, it is luxury and with 110 sqm it massively comes at the expense of other areas

Correct. That it is luxury is another matter. And that it doesn't fit in this house, too. But that it shouldn't be built in principle is not true.