Floor plan single-family house in the attic, ideas

Good day or rather Moin!

We are completely renovating a single-family house from 1972 and are in the process of converting the already developed attic floor to suit our needs. However, we do not yet find the layout of the attic optimal and are curious about your collective knowledge. We have an architect who is helping us with the renovation as well as with the layout design. CURRENT condition

There are four rooms, four small bathrooms, and a kitchenette in the attic. The attic has been rented out as a vacation apartment/room in recent years. uninsulated collar beam 38-degree gable roof with concrete tiles brick facade double glazing single-pipe heating with radiators electrical system from the year of construction

DESIRED condition according to BAFA criteria energy-efficient renovation including external thermal insulation composite system (ETICS) and brick slips new windows new roof including insulation heat pump including underfloor heating throughout the house new sanitary facilities

I think these are the most important key data. Financing and procedures are all settled; it is only about the layout in the attic.

All interior walls have been removed, screed as well as heating and water removed. We are on the bare concrete slab. In the attic the following should be created.

- 2 similarly sized children’s rooms
- one bathroom with bathtub, large shower cabin, double washbasin, and WC
- spacious bedroom for a double bed with walk-in closet

The following restrictions:

- Fresh and wastewater must be located on the “left” side of the house (when looking at the floor plan) as the main stack is there
- Staircase and chimney cannot be moved

The layout actually meets almost all criteria－except the missing bathtub and the size of the bathroom.

We now have the following idea, and HERE is where you come into play. We are considering leaving the bathroom as it is in the layout and expanding it downwards to the dressing room. This means the WC will be removed, providing a passageway “downwards” (on the floor plan) where the bathtub and shower are currently located in the dressing room. So, you basically go around the staircase. This partially reduces the size of the dressing room, but we get our bathtub and the spacious, somewhat quirky bathroom. The problem with this is the passage height from the WC bathroom to the bathtub bathroom. Proposed solution－installing a Velux space-saving window or dormer. Of course, this costs accordingly. Do you have any other ideas on how to solve this? A dormer would be absolutely great but also correspondingly expensive. Furthermore, we cannot further close off the staircase access because then we would not have 2m clearance height for passage.

Do you have a completely different layout or idea? I’m curious to hear what you say.

We are completely renovating a single-family house from 1972 and are in the process of converting the already developed attic to suit our needs. [...] CURRENT condition There are four rooms, four small bathrooms, and a kitchenette in the attic. The attic has been rented out as a holiday apartment/room in recent years.

However, the floor plan does not show the same; please also add the ground floor.

all interior walls have been removed, screed as well as heating and water have been removed. We are on the bare concrete slab.

Concrete slab? - all dimensions / wall thicknesses read more like a "prefab" house.

Plot and compass direction are certainly also necessary.

Plot and cardinal direction are certainly also necessary.

Well, in my opinion, that’s not so relevant here. I already find the draft close to optimal and wouldn’t know right away where you could get more out of it. The staircase is as it is and prevents having many possibilities here.

I also see no need for any further additional information. The attic floor is gutted, nothing is left standing, and the architect has drawn a good design. I would have no problem at all turning the planned shower into a nice tub and simply showering in it. That would be my suggestion. If you insist on a dormer, then please over the whole bathroom, because the access to the toilet is also not exactly head-friendly.

Wow, thank you very much for your quick responses.
Correct, the attic is gutted except for the concrete ceiling. The walls will be newly constructed in 15 cm drywall, hence perhaps the idea of a prefab house. Otherwise, the house is quite generously sized (for '72) ;) I was advised against new masonry walls several times. Even my uncle, a master mason for 32 years, says that nowadays drywall is more common. Especially if it is built well and solidly.
I have also considered the ground floor, cardinal directions, and other information as irrelevant. If anyone needs this to assess the attic floor plan more precisely, please let me know.