Small house on large towel plot

I wouldn’t skimp on the central ventilation system. We didn’t have one in the first house. At some point, we retrofitted decentralized systems in various rooms, but that’s a world of difference compared to the current second house with central ventilation. I think it becomes increasingly important in increasingly well-insulated houses. I can say for myself: never again without!

I find the open-plan room too small; the dining table is just squeezed in, there is a lack of space. And the sofa area already feels extremely uncomfortable on the plan because the dining table was crammed in there like that.

I don’t like the upper floor so much; I find this slanted entrance situation unfortunate. It makes K1 difficult to furnish.

If it’s about saving potential, I would consider leaving out the window in the sauna. First, it makes it more expensive because the cabin has to be adapted for it, and second, you lose space in the sauna. We thoroughly considered having a window, really wanted one in the sauna too, but the price difference ultimately wasn’t worth it for us. (By now I’m even glad, because I mostly go to the sauna in the evenings and I find it cozier without a window, but that is purely a matter of taste.)

Quickly:

Number of dining seats 4 (8)

You won't fit the 8.

Fireplace yes

The fireplace won't be easily connectable around the corner. You also have to consider distances from the fireplace to the furniture (at least one meter).

I would see this as a prerequisite, unless you have actually dealt with the topic of ventilation.

It is clearly a money issue. If the budget allows, gladly. A central ventilation system then also requires maintenance.

You should first know your furniture exactly or clarify where you want to sit/lie down and then plan the rooms; for that, furniture dimensions are indispensable.

We will hardly reuse any furniture. The drawn-in furniture has realistic dimensions. But whether they will actually be placed like that is still under discussion.

The dining area will be very tight anyway, this is already noticeable without measurements; compared to that, the kitchen is quite large. Then also a fireplace plus FHB? And do you really want to sit like that on the sofa in the living room with all residents, is the TV only watched straight ahead?
...the windows at the dining table cannot be opened as drawn.

The dining area is tight, that’s true. But so far I haven't come up with a better option. The door at the dining table is a sliding door, which the program displays incorrectly.
As I already said, it bothers us a lot at the moment that we cannot both or all three work in the kitchen together. Hence the larger kitchen.

Open plan rather small, hallway huge instead with outward-opening door.

True. A larger open plan would be better, but also more expensive.
The ground floor hallway is that wide because our current hallway is too narrow for us. Did I overcompensate there?
Since there is enough space in the hallway but not in the open plan area, I found the door logical that way.

And do you really want to sit like that on the sofa in the living room with all residents, is the TV only watched straight ahead?

Well, in the last three years, more than one person has only sat on the sofa (in the currently almost equally sized and almost identically furnished living room) when we had visitors. And then the TV was either off or a console was connected.
Still, thanks for the note. We need to think a bit more about how our daily routine in the house will look.

A parapet height of 75cm on the head wall of the bed on the ground floor also seems rather pointless to me, ...

True. This room needs reworking.

What exactly does that mean?

Number of persons: 3 plus regular visitors
Age: between 17 and well over 55

why are these then in the north and the guest room in the southwest, just move kitchen-dining-living to the southwest and it is light and bright and beautiful

Absolutely right. I have another floor plan that is built exactly like that. Its disadvantage is the rather unpleasant main view direction onto the neighboring buildings. And I was not able to shrink it so small. To the northeast, we have more than 50 meters of sight into greenery. With the living room window facing southwest, the house would have to stand several meters further back so that something worth seeing is visible from the window. Both have their advantages and disadvantages.

This is no longer a preliminary draft. The preliminary drafts exist as hundreds of Paint files in a 12GB directory tree.
Why I transferred this floor plan into a CAD system, I had explained.

You explained that, but it doesn’t convince me. A preliminary draft is an important planning step and cannot be replaced by any large number or even an excessive number of drafts. Paint is not suitable for preliminary drafts; a good preliminary draft is not clicked, but scribbled.

Own experience has shown that an eight-meter grid is quite irrelevant with a stone size of 42x60cm. If cutting has to be done, it does not matter whether at 12.5cm or 48.2cm. But these are also fine details that will hopefully be considered in the final floor plan by the architect, if necessary. I certainly will not start a dispute about whether a wall stands two or three centimeters further left or right. Making an unnecessarily thick interior wall thinner should also be manageable for an architect.

Do you mean an "architect" aka draftsman? – an interior wall not yet dimensioned should better be generally 20 cm than specifically 24 cm thick. Ignoring the eight-meter grid is not problematic because of work inefficiency due to saw breaks, but because it acts as a domino effect on botched pocket joints instead of clean butt joints and through timing disturbances on the overlap dimension. Aerated concrete is taken to use caliber 425 only from EH40 onwards; and a Euromodule stretcher length belongs in industrial construction.

The fireplace is a 95% must-have as a supplementary heat source (and hopefully a comfort source). A good position takes priority, but if feasible, we want to have a water-bearing fireplace installed, connected to a buffer storage and/or with an additional hot water heating circuit for the bathrooms (e.g., in the form of large “towel dryers”). For the base heating load, an air-water heat pump is planned for the underfloor heating. In the bedroom and child 1 additionally an air conditioning system.
A central ventilation system is probably too expensive.

A controlled residential ventilation system is most expensive if you initially omit it. A house built in 2025 without controlled residential ventilation deserves, in my view, a penalty when it comes to financing, as it is a hard-to-sell property in case of resale. Retrofitting would be limited to the decentralized variant, since central systems are technically highly complex and economically not feasible. A cozy fireplace runs on a Raspberry, without a chimney. Making it water-bearing as a useful accessory, I, as a businessman (just over 56), prefer not to comment on.

I suspect the same. The cellar is costly. [...] I am not sure at the kitchen and bathroom whether much savings are possible without significantly reducing comfort.

The cost intensity of a cellar does not need to be suspected but can be calculated shockingly accurately with the help of the 11ant cellar rule. However, this should be cleared up before starting to draw anything.

When it comes to saving potential, I would consider foregoing the window in the sauna. Firstly, it makes it more expensive because the cabin has to be adjusted, and secondly, you lose space in the sauna. We extensively dealt with having a window, really wanted one in the sauna as well, but the price difference ultimately wasn't worth it for us. (By now I'm even glad because I mostly go to the sauna in the evenings, and I find it cozier without a window, but that's purely a matter of taste.)

Almost forgot. Thanks for this tip. I will probably mostly use the sauna in the evenings (as the only one, by the way). A window is really not very useful then.