Classic single-family house 200 sqm (plus basement) tips?

Floor area ratio: 0.10-0.24 Floor space index: 0.38

If everything is covered, then 11 x 13 fits.

Of course the children's rooms would be better facing south, but it is our house after all and children move out.

... and grandchildren move in. The rooms are not deleted, right? You are not doing yourselves a favor with the bedroom in the south, as the place heats up through the south-facing windows. And the drainage of the master bathroom, whose problem is often ignored, has already been mentioned. It either runs by the counter or in the corner of the dining area. You probably don't want the downpipe in front of a window, do you?

How could the open plan room (living room) be better structured?

Different floor plan, more L-shaped or shifted living areas.

At least the statement of a regionally typical "normal" II + gable roof house is surprising considering the floor plans, which probably not only I would spontaneously assign to the "Bauhaus" faction.

Personally, I can only assign it to the style of a single-family house with a gable roof. At least to me, Bauhaus means something different. Well, that may also vary from builder to builder.

A drainage system, where one is curious about the architect’s answer, and a laundry chute that "will exist at some point," rather fit a general contractor henchman—not appropriate for the house budget—than an architect (and uncertainty whether furniture can be placed does not fit an "actually too large" house either).

Well, the plan does not come from my pen but from the architect’s, who in turn has to explain to me whether certain arrangements are possible. The mere size does not necessarily make furnishing easier.

I do not understand the reasoning as to how windows are a contraindication that the house will consume the eight hundred grand.

I had rather used it as an indication for the correctness of the calculation. Maybe the wording was not clear enough.

In a 34-zone area, it is by no means unusual that no fixed site occupancy index and floor area ratio specifications are made (since that would already be rudimentarily a development plan). So the indication of a site occupancy index from-to will presumably refer to an inventory. However, the floor area ratio is a somewhat related figure and accordingly very strange with such a large range in one if only one value is given for the other. As expected, a fluctuating value should also be stated there—unless someone at the building authority is also not well informed and you received the values from an intern covering for someone on vacation. Because ignorance regarding the correlation of the two numbers would have to be very extensive for this information.

The meaningfulness of these rather long explanations is not fully clear to me. I personally did not receive the values from anyone but derive them from the architect’s written evaluation referring to the office’s statements.

Best regards

If everything is represented, then it will work out with 11 x 13. ... and grandchildren included. The rooms are not going to be deleted, right? You are not doing yourselves any favors with a bedroom in the south, as the house heats up through the south-facing windows. And the drainage of the master bathroom, whose problem is often ignored, has already been mentioned. It either runs along the counter or in the corner of the dining area. You probably don't want the downpipe in front of a window, do you? Different floor plan, more of an L-shape or shifted living areas.

I hope my grandchildren don’t want to live with their grandparents, but joking aside. I see the problem the same way, even if the temperature issue is generally addressed by air conditioning in the house. Nevertheless, I would also prefer an orientation of the rooms towards the north. The architect needs to take another look... Thank you very much for the constructive criticism

I personally can only categorize it as the style of a single-family house with a gable roof. At least to me, Bauhaus means something different.

Exactly. You read single-family house with gable roof and then see floor plans typical for a "flat roof white matte," as it's called in trendy homeowner lingo "Bauhaus style." That doesn't really seem to fit, and this is exactly what I interpret as the result of too many mixed sources of inspiration.

The sheer size does not necessarily make furnishing easier.

But an architect should still manage to fit all the furniture into too many square meters at least.

I rather took it as an indication of the correctness of the calculation. Perhaps the wording was not clear enough.

Unfortunately, it stayed that way. How "many / large windows" are supposed to indicate that the budget will suffice leaves me puzzled.

Exactly. You read single-family house with a gable roof and then see floor plans that are typical for a "flat roof matte white," as it is called in fashionable client-architect German "Bauhaus style." That doesn't quite fit together, and this is exactly what I interpret as the result of too many mixed-up sources of inspiration.

I don't really deal with magazines. What the architect reads in his free time is beyond my knowledge.

But an architect should manage, at least within too many square meters, to accommodate all the furniture

Primarily, it was about reconciling area with rooms, which in my assessment still requires some coordination.

Unfortunately, it remained that way. How "many / large windows" are supposed to indicate that you can make it within the budget leaves me puzzled.

I had also written that the number did not seem too high to me. Unfortunately, it is also the first house, so I do not yet have exact mastery of the construction price assessment. But that will certainly come.

I am not really into magazines. What the architect reads in his free time is beyond my knowledge.

A mixture of many examples from various magazines...

You did not say that these were only the ones the architect reads. In any case, the result rather shows "bauhaus"-typical floor plans, which you don't "see" the gable roof on and wouldn't immediately suspect either ;-)