Floor plan of a flat-roof house on a slope

In addition to what has already been said:
- if the hobby room might also serve as a guest room, I would possibly consider installing a shower option downstairs in the WC. Also if you have children who come in all dirty from outside. That way they would either a) have to go upstairs through the house or b) through the living room
The space would definitely be there, as the laundry room is really huge
- If you want to keep the pantry, I WOULD make the access from the hallway. I think it’s a shame to visually break up a nice kitchen with an island by having a door in the tall cabinet block
- The gallery would be wasted space for me upstairs or too large/flat/uncozy, because it doesn’t seem to be open (air space)
- I now have your bedroom/wardrobe situation roughly 1:1 in the rental apartment. Conclusion: I would leave the bed as it is, but only make the access to the wardrobe either from the hallway OR from the bedroom. Two doors don’t make much sense to me, especially as they are right next to each other and offer little “gain.” Tendency to have a door only from the hallway, because my wife and I have different working hours and if one still wants to sleep and the other constantly walks in, has to turn on the light or brightness shines through the open door, that is disturbing for US. But of course it doesn’t have to be for you
- The parents’ bathroom is similar for us, except the door is moved further north to have space for a cupboard (towels, etc.) and so you don’t have to walk sideways into the sinks. The shower could possibly get a bit dark if it’s built up to the ceiling
- Basically: if you are planning controlled residential ventilation and/or a bus system, be sure to provide an installation shaft that runs from the basement to the top floor. It makes many things easier later. We don’t have it, due to lack of space, and have to improvise a bit with the controlled ventilation system...
Have fun with the house building project [emoji1303]

First of all, thank you very much for the suggestions. I would never have thought of simply inserting the pictures via drag & drop! : Why can't posts be edited? Then I would add the pictures in the 1st post.

Who, what, why? I thought nobody reads this anyway. For now, I am building alone, no concrete family planning yet. But it will surely/probably come someday. I bought the plot around 3-4 years ago. It is supposed to be a "small," practical, cozy house. Look somewhat modern. Since I currently live in my apartment in the attic, I decided against a classic pitched roof. 1. Roof windows are ultra impractical. In winter, snow lies on them, no light comes in, you cannot open them. In summer, you cannot leave them open, at the slightest thunderstorm it rains in. Also expensive compared to normal ones. 2. Much wasted space in the dormer 3. Appearance Therefore flat roof. As already said, there is no development plan and no other requirements, building line, or similar. A central ventilation system is not planned. KFW55 neither.

The plan comes from the architect and the design is around 470,000 turnkey with heating, photovoltaic (12kW), and a halfway decent equipment. Built stone by stone by regional companies. I therefore calculate completely roughly with 550,000 until everything is fixed and finished.

Actually 100,000 over my price expectation (not budget), but I wouldn’t know where I could save this. Possibly 50,000 with own work / photovoltaic initially left out.

So now I will try to address all the points mentioned: Entrance area: matte1987 is right, I will definitely remove the 50 cm behind the laundry room door and move the wardrobe down. But otherwise I don’t find the entrance area small, especially with the corner glazing there will certainly be a lot of light coming in.

Oil heating (for the discussion probably a separate thread would be worthwhile): - Gas? Not available - Heat pump? I don’t think much of that. We are at over 600 meters above sea level there, harsh weather. Geothermal energy is also not an option due to water protection area. Besides, in my opinion, electricity prices will significantly rise in the next years/decades. Many heat pumps will break down after 5-15 years -> expensive replacement or new device. - Pellets? Expensive to acquire, more things can break. Will the investment ever pay off? - Oil? I expect the oil price to rather fall in the long term than rise. Also "relatively" cheap acquisition. (Although I counted less than estimated there (25k for oil heating + tanks + underfloor heating + 6m² solar)

The 3X1500L the architect simply drew in. There are such modular tanks nowadays that can be arranged arbitrarily, without a catch basin. How many I will actually install will be seen then. Although they are relatively cheap and the price naturally drops considerably with the quantity purchased. I also realize that the position of the oil storage is not ideal. But the hose should reach around the house as well. Or one can lay a filling line along the wall through the storage and laundry into the garage.

What requirements must I fulfill with oil heating? I plan a Swedish stove in the living room. Do I need additional solar, photovoltaic, or both?

Bedroom: True. The second door is actually superfluous.

Light shafts: I also don’t like the light shafts on the terrace that much. But what can one do? The southern one from the heating room will be omitted. Instead maybe a proper window on the side. The one in the storage is necessary, could be moved under the fixed element. The one from the laundry room I believe isn’t that disturbing. Garage door: Certainly true. I hadn’t noticed that yet.

Kitchen: In the kitchen I would like to provide the option to separate it from the living area afterwards. With a sliding door or similar. If I eliminate the pantry and move the kitchen further up, that should be possible. Pantry? For what? There is a storage room in the basement.

Living room: When I sit on the sofa, I watch TV or so. But not look out on the terrace. Nothing so interesting happens there

Guest room: I have a pop-up tent in the basement. But I definitely will not plan a guest room in the house.

Gallery upper floor: In the previous draft there was an "oriel" into the house. I preferred to carry the wall straight through. I actually don’t find it bad. One could a) make a nice reading/play corner out of it or b) relatively easily create an additional children's room in case of emergency.

Bathroom upper floor: Yes, the door should really be moved slightly to the north. Also I would swap the toilet and the shower and switch the sinks with the bathtub (that is, sinks to the T and bathtub in the corner).

...It is supposed to be a "small," practical, cozy house.

......
A centralized ventilation system is not planned.
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Living room:
When I’m sitting on the sofa, I watch TV or something similar. But not out onto the terrace. Nothing that exciting happens there

.....

I have a few questions/remarks:

1. Do you like the house?
Is it cozy for you? Inside as well as outside?

2. The argument about roof windows is flawed: you can easily do without them as well as dormers without any significant loss of any kind. For modern coziness, I always favor a gabled roof

3. Without controlled residential ventilation, I see a ventilation problem: you alone probably won’t manage to air out thoroughly every day.

4. About the "boring" view into the garden: you don’t build a house to watch TV (you can do that elsewhere as well). Among other reasons, you build a house to proudly look into your own garden. Preferably from your favorite spot

5. When planning a family, one should consider that many marriageable women wouldn’t necessarily want to move into a finished, unfamiliar house.

I have some questions/comments:

1. Do you like the house? Is it cozy for you? Inside as well as outside?

2. The argument about the skylights is flawed: you can easily do without them as well as dormers without any significant loss of any kind. I always favor a gable roof for modern coziness.

3. Without controlled residential ventilation, I see a ventilation problem: you alone probably won’t manage to air out by opening windows intensively every day.

4. About the "boring" view into the garden: you don’t build a house to watch afar (you can do that somewhere else too). Among other things, you build a house to proudly look into your own garden. Ideally from your favorite spot.

5. When planning a family, one should consider that many women willing to marry might not necessarily move into a finished, foreign house.

If I didn’t "like" it or find it cozy, would I plan it that way? I don’t quite understand. Are there any advantages of a gable roof over a flat roof? I don’t know any. I simply don’t believe the ventilation problem. Just because some "experts" claim it? As for 5, I won’t say anything now.

5. When planning a family, one should consider that many women willing to marry would not necessarily move into a finished foreign house.

I think there are many more who would move immediately and very gladly into a finished house of this size.

I had also seen the gallery as very large. But since the 2 kids live there, I thought it was planned as a playground and actually found it ideal.