ᐅ Floor plan of a flat-roof house on a slope

In addition to what has already been mentioned:
- If the hobby room might also be used as a guest room, I would consider adding a shower option in the downstairs bathroom. This would also be useful if you have children who come in dirty from outside. That way, they wouldn’t have to a) either go upstairs through the house or b) pass through the living room.
There should definitely be space there since the laundry room is really huge.
- If you want to keep the pantry, I WOULD create access from the hallway. I think it’s a shame to visually interrupt a nice kitchen with an island by having a door in the tall cabinet wall.
- The gallery upstairs seems like wasted space to me, or too large/spacious/uncomfortable, especially since it doesn’t appear to be open (atrium).
- Your bedroom/dressing room setup is almost exactly what I have in my rental apartment. Conclusion: I would keep the bed as it is, but make the dressing room access ONLY from the hallway or ONLY from the bedroom. Having two doors makes little sense to me, especially since they are right next to each other and offer little benefit. I tend to prefer the door only from the hallway because my spouse and I have different work schedules, and if one still wants to sleep while the other keeps walking in, turning on the light, or letting light in through the open door, that’s annoying for US. Of course, it doesn’t have to be like that for you.
- Our master bathroom is similar, except the door is shifted further north to allow space for a cabinet (towels etc.) and to avoid having to walk right next to the sinks. The shower might be a bit dark if it is built with walls to the ceiling.
- In general, if you plan to install a mechanical ventilation system with heat recovery and/or a bus system, be sure to include an installation shaft that runs from the basement to the upper floor. It will make many things easier later on. We don’t have one due to space constraints and have to improvise a bit with our ventilation system...
Have fun with your house building project [emoji1303]

First of all, thank you for the suggestions.
I never would have thought of simply inserting the pictures via drag & drop!
@Admin: Why can posts not be edited? Then I would add the pictures in the first post.

Who, What, Why?
I thought no one would actually read this anyway.
For now, I am building alone, no concrete family plans yet. But that will probably change at some point.
I bought the plot 3-4 years ago. It’s supposed to be a "small," practical, cozy house. Fairly modern in appearance. Since I currently live in an attic apartment, I decided against a classic pitched roof.
1. Skylights are extremely impractical. In winter, snow settles on them, letting no light in, and they can’t be opened. In summer, you can’t leave them open; even the smallest thunderstorm brings rain inside.
They are also expensive compared to regular windows.
2. A lot of wasted space in dormers.
3. Appearance.
That’s why a flat roof.
As mentioned, there are no zoning plans or other restrictions like building lines.
No central ventilation system is planned.
KfW55 (energy standard) is not planned either.

The plan is from an architect, and the estimate is about 470,000 euros turnkey with heating, photovoltaic system (12kW), and a reasonably good standard. Built with solid brick masonry by local companies.
I expect the total cost to be around 550,000 euros once everything is finished.

That is actually 100,000 euros over my desired price (not budget), but I don’t see where I could save more. Maybe 50,000 euros by doing some work myself or leaving out photovoltaic initially.

Now I’ll try to address all the points mentioned:
Entrance area:
matte1987 is right. I will definitely reduce the 50cm (20 inches) behind the laundry room door and move the coat rack down. Otherwise, I don’t find the entrance area small—especially with the corner glazing, a lot of light should come in.

Oil heating (likely worth a separate thread for this discussion):
- Gas? Not available.
- Heat pump? I’m not too keen on it. The place is above 600 meters (about 2,000 feet) elevation, with harsh weather. Geothermal is also not an option due to water protection zones. Plus, in my opinion, electricity prices will significantly increase over the coming years/decades. Many heat pumps break after 5-15 years, leading to expensive replacements or new units.
- Pellets? Expensive to buy, more things can break. Not sure if the investment will ever pay off.
- Oil? I expect oil prices to tend to fall rather than rise in the long term. Also, the initial cost is "relatively" low. (Although I budgeted less than expected for the oil heater + tanks + underfloor heating + 6m² (65 square feet) solar thermal.)

The architect simply sketched three times 1,500-liter (400-gallon) tanks. Nowadays there are modular tanks that can be combined without spill containment. How many I finally install remains to be seen. They are relatively cheap, and prices naturally drop significantly with volume.
I’m also aware the oil storage location isn’t ideal. But the hose should reach around the house. Or a filling line could be installed externally along the wall through the pantry and laundry room into the garage.

What requirements do I need to meet with oil heating? I plan to have a wood stove in the living room. Do I also need solar thermal, photovoltaic, or both?

Bedroom:
True. The second door is basically unnecessary.

Light wells:
I’m not fond of the light wells on the terrace either. But what can you do?
The one on the south side of the heating room will be eliminated. Maybe a proper window on that side instead.
The one in the pantry is necessary, but it could be moved under the fixed element.
I don’t think the one by the laundry room is that much of a problem.

Garage door:
Correct, I hadn’t noticed that yet.

Kitchen:
I would like to have the option to separate the kitchen from the living area later, with a sliding door or something similar. If I remove the pantry and shift the kitchen upwards, that should be possible.
Pantry? What for? There’s a storage room in the basement.

Living room:
When I’m on the sofa, I’m watching TV or something similar, not looking out onto the terrace. Not much exciting happens there.

Guest room:
I have a pop-up tent in the basement but won’t plan a guest room inside the house.

Upper floor gallery:
The previous design had a bay window projecting into the house. I preferred to keep the wall straight. I actually like it. It could be a nice reading/play area or, if needed, easily converted into an extra children’s room.

Upper floor bathroom:
Yes, the door should be moved a bit further north. Also, I would swap the toilet and shower and swap the sinks with the bathtub (i.e., sinks at the T wall and bathtub in the corner).

al3x_ schrieb:
...It is meant to be a "small," practical, cozy house.

......
A central ventilation system is not planned.
......
Living room:
When I sit on the sofa, I watch TV or something similar. But I don’t look out onto the terrace. Nothing exciting really happens there.

.....

I have a few questions/comments:

1. Do you like the house? Is it cozy for you, both inside and outside?

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

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

4. Regarding the "boring" view of the garden: you don’t build a house just to watch TV (you can do that elsewhere). You also build a house to proudly look over your own garden – ideally from your favorite spot.

5. When planning a family, you should consider that many women planning to marry might not want to move into a finished house that belongs to someone else.

ypg schrieb:
I have a few questions/comments:

1. Do you like the house? Is it comfortable for you? Both inside and outside?

2. The argument about skylights is flawed: you can easily do without skylights or dormers without any significant loss of any kind. For modern coziness, I always prefer a gable roof.

3. Without a mechanical ventilation system with heat recovery, I see a ventilation problem: you alone probably won’t manage to ventilate by opening windows every day on a regular basis.

4. Regarding the "boring" view of the garden: you don’t build a house to watch far away (that can be done elsewhere). Among other reasons, you build a house to proudly look at your own garden. Preferably from your favorite spot.

5. When planning for a family, one should consider that many women willing to get married wouldn’t necessarily want to move into a finished house that belongs to someone else.

If I didn’t like it or didn’t find it comfortable, would I plan it this way? I don’t quite understand that.
Are there any advantages of a gable roof over a flat roof? I don’t know any.
I simply don’t believe in the ventilation problem. Just because some "experts" say so?
Regarding point 5, I’ll say nothing for now.

ypg schrieb:

5. When planning for a family, it should be considered that many women intending to marry might not necessarily want to move into a finished house that belongs to someone else.

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

I had also imagined the gallery to be very large. But since the two kids live there, I thought it was planned as a play area and actually found it ideal.