Floor plan for "mid sized tiny house" / Single-family house with nearly 100 sqm

Are you the one who is chronically ill? In your mid-30s, you should free yourself from the idea of "not being able to do as much later on" when it comes to optimal floor plan design here and now.
But if your health is already not good now, then ...
I will bring the bungalow into the discussion based on the mentioned floor area: vestibule, shower toilet, all-purpose room, of which 2 are private rooms. A bathroom with a tub. You would have no loss of space due to stairs or sloping roofs. With good planning, you can still set up a guest couch under the roof with an emergency staircase.

First of all, sorry that I just disappeared like that. My dog was seriously ill and passed away last week.

Yes, I am chronically ill. I understand that it is rather unusual to plan for later disability at this age.
However, since I have not been able to leave my apartment for several weeks already and my illness is quite unpredictable, I would prefer it this way.

A bungalow or two full floors are unfortunately not an option because they exceed our budget.

We had actually already considered the idea of a guest room in the garden shed and will probably implement it that way, and set up an emergency sleeping solution in the lower study, so not a large bed but rather a sofa bed, or adapted to tiny house ideas, with some kind of folding mechanism. There are quite a few suggestions on the internet.

If the staircase is smaller and, above all, starts deeper in the room, maybe the bathroom could also be located above the utility room and have the door next to the staircase.

Hello,
I don’t see a tiny house (with special room concepts) in the plan either, but rather a "small standard house."
Based on the Town & Country 100 (8.0m x 8.75m) I made an adjustment for you. There is even another room upstairs so that each resident has a bedroom (I read that as 3 people, 2 adults, not a couple + 1 toddler).
If you don’t like the admittedly very open kitchen area on the ground floor, the kitchen can be separated as a living kitchen (including dining table) (dashed wall).
To reach the 8.5m, the living room and upstairs the child and guest room would have to give up 0.25m if necessary. However, I think the living room would still be wider than in your floor plan.

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Thank you very much, that actually looks good, and we might possibly afford 0.25m wall too ;)
And indeed, it’s only two of us, plus a small dog, so that could fit well.

The tiny house thing was more of a joke, because it was called that in another thread.

Unfortunately, everything is dragging on with the plot. It was a heavily used military zone and is now being resifted by the bomb disposal service. Unfortunately, their big excavator broke down, so they are now doing it with some mini thing. Logically, no soil survey can take place until this is completed, because nobody wants anyone to blow themselves up there.
So we have to wait longer; our reservation runs at least until this is finished and we have a soil survey (and HOPEFULLY can buy).
After that, we will also work with the architect and hopefully find a good solution.

I am grateful for the suggestions!

If the staircase gets smaller, it might look like this. However, I am very uncertain when it comes to staircase sizes.

First of all, sorry that I just disappeared like that. My dog was seriously ill and passed away last week.

Oh, I'm sorry to hear that.

Yes, I am chronically ill. ... Since I have not been able to leave my apartment for several weeks and my illness is quite unpredictable, I would prefer it that way.

Then forget about the stairs and take a bungalow. Without barriers. That will make you happier.

Unfortunately, a bungalow or two full floors are out of the question because it exceeds our budget.

In that size range, a bungalow is not more expensive compared to a single-family house with an attic conversion. You save on stairs, scaffolding, and ceiling or sloped wall cladding.

According to my research, there is only one (relatively affordable) prefab house provider whose bungalow is cheaper than a house with 1.5 or 2 floors. This is an exception and if our plot were larger, we would have built with them.

According to my research, there is only one (relatively inexpensive) prefab house provider whose bungalow is cheaper than a house with 1.5 or 2 floors. That is an exception, and if our plot were larger, we would have built with them.

Now don’t make it so suspenseful! Tell me :)

Now don’t make it so exciting! Tell me :)

I don’t know if names are allowed here. In fact, bungalows (my information from 2019) are more expensive than one- or two-story houses at all the prefab house manufacturers I know, due to the larger foundation and the bigger roof, except for one provider from Marlow. S......s. I was also very surprised by this, because for me a bungalow was always just a slightly more comfortable garage, but the argumentation makes sense to me as a non-expert.