First own floor plan single-family house - looking for suggestions

You don’t need to smoke anything for that - she certainly means the bottleneck towards the Allraum [emoji2]

Exactly! You have to imagine what this room looks like when you enter the house and then go into the living room under a staircase.

Best regards
Sabine

One has to imagine what this room looks like when entering the house and then going under a staircase into the living room.

Under a staircase that you only see because you have to duck your head for it. The first eighty percent of this staircase takes place in some kind of room. Which is probably followed by the guest toilet, if I interpret the artworks from the green period correctly.

"No slants" I don't understand. The hip roof is at most cost-effective compared to the half-hip roof, but certainly not compared to the gable roof.

Ideally, we would like the 1st floor without roof slopes.

So your cost assessment (from inexpensive to expensive) is as follows:

1. Gable roof with congruent roof pitch with ideal pitch for photovoltaic elements including knee wall/roof slopes on the 1st floor
2. Gable roof with congruent roof pitch with ideal pitch for photovoltaic elements without knee wall/roof slopes on the 1st floor
3. without knee wall/roof slopes on the 1st floor
4. Gable roof with incongruent roof pitch with ideal pitch for photovoltaic elements on one side with knee wall/roof slopes on the opposite side on the 1st floor

Correct?

By "synchronous" do you mean "roof pitch congruent with ideal pitch for photovoltaic elements"?

Yes.

Check this out: - before the introduction to the topic of stairs, there is also the questionnaire that is frequently requested here.

Thank you very much. I will study the post about stairs soon. I will send the questionnaire later. Sorry!

Exactly! You have to imagine what this room looks like when you enter the house and then go under a staircase into the living room.

Best regards
Sabine

Regarding brightness, we would have worked with glass doors to the living area and to the stairwell.

The room in the entrance area is intended to serve as a windbreak.

In the current drawing, there would be a maximum of 2 steps above the entrance to the living room visible. These could possibly be concealed with an arch or similar.

If you also want a basement, you have to go down somewhere. Ideally, the stairs are located under the ones leading to the upper floor. ;-) That, as long as you can fit a shortened staircase with sensible dimensions there, doesn’t make the access to the living room nicer.

Hello

You have already been pointed to the questionnaire in the pinned thread as well as the stairs shown there.

There are some basic principles in house planning that should be followed even if you just want to juggle the rooms, e.g. the feasibility of bathroom drainage, short distances, accessibility, storage options behind doors, privacy, sight lines, statics (walls on top of each other), etc.

You should also bring the following to the planner/architect: site plan, design wishes (including exterior facade), room requirements, etc.
The answer regarding roofs may already be clear when reading the development plan, but often you already have your ideas as well as your idea about the stairs.

Surely you have already formed some "pictures" from model home exhibitions, magazines, and the web about how this or that perspective should look.
What apparently no one has seen yet is that the door to the most important room is not only very narrow but also hidden completely behind the cellar door, where barely 90 cm width is available, so that you cannot even enter there side by side. This door should be extra wide and located in a special place; it should stand out from the hallway in the entrance area and appear inviting. Also, you should be able to carry a crate of drinks and a shopping basket through it. A laundry basket and ironing board would also be good.
And sometimes it would be very sensible to carry up a ladder from the cellar that can also be carried out from the stair area.
Furthermore, it is very surprising and questionable whether it makes sense to enter the living room from the vestibule, i.e. the dirt trap of the whole house.
There are so many floor plans on the web, more than you can really use: why do you want to reinvent the wheel?

Regards, Yvonne

Ideally, we would like the 1st floor without sloping ceilings.

That is understandable, but it depends not on the roof shape, but on the roof pitch. In a hip roof, the main roof surfaces are not different compared to a gable roof, but rather the otherwise gable sides are also sloped; otherwise, they are identical with the same pitch. The eaves height does not change because the "gable" sides are also sloped, neither higher nor lower.

So your cost estimate (from inexpensive to expensive) is as follows: [...] 3. without knee wall/sloping ceilings on the 1st floor [...] Correct?

Neither correct nor (regarding 3.) understandable. The price of the roof is not based on the parameter "degree of pitch suitability for photovoltaics," but primarily on the complexity of the roof structure:

The cheapest is the flat-pitched shed roof with truss construction, just steep enough to avoid special roof tiles for low pitches.

More expensive is then the classic beam construction, even with the same roof shape.

Next most expensive in terms of shape is the gable roof, as a quasi two-surfaced shed roof combination.

Starting from the gable roof, the roof structure can be varied in two dimensions to become more complex and expensive: as a mansard roof with a "broken" pitch, or as a hip roof with sloped sides as well (and thus missing gable walls).

The hip roof itself is slightly simpler/cheaper without a ridge (then called a pyramid roof), or even more complex as a half-hip roof. The top class, also pricewise three-star superior, is the half-hip roof over an L-shaped plan, or with dormers.

In none of the basic shapes does asymmetry have a (significant) price impact. That is only a pleasure for the master craftsman when they can give a talented apprentice something more challenging to trace.

The height of a possible knee wall only indirectly affects this basic roof price order if roof additions result from it. A simply linear propped-up roof remains structurally the same as such.

A false asymmetry as in your drawing, that is with equally pitched roof surfaces and a shifted ridge to balance different eaves heights, is a structural complication that is usually only applied out of necessity on extreme slopes.

Regarding the "ideal" roof pitch for photovoltaics, one must consider that the degree numbers must be interpreted differently if the house axis is rotated out of the cross of the main cardinal directions.

North roof surfaces are, of course, the least efficient, and seen that way, the south shed roof should be favored, preferably slightly hipped, to also include the east and west sides.

However, even in green-governed districts, I have yet to encounter any development plan that would specifically consider this.

Mainly, people live in the house; photovoltaics are only the tail, not the horse.