Barrier-free single-family house floor plan for aging with parents' bedroom on the ground floor

If the ideas with you AND the planner are pretty blank, a sketch of the property including orientation, possible neighboring buildings (preferably just indicated roughly where houses stand or views are blocked) as well as all wishes is quite practical. So additionally desired garage, carport, terrace areas, balcony, access/path to the property, as well as all required rooms with priorities or wishes. Currently, I have tentatively taken along a parent wing/bedroom downstairs, 2 children's rooms and an office upstairs.

Even isolated, the floor plan can be very good, but currently there is still room for improvement..., it must fit the property as an overall concept ;)

I hope you understand the hint... Where roads pass by would be part of "access path," this passes by in the south (?). The rest remains open according to your post...

You don't have to have ideas for the specific floor or the floor plan, but you should know what is supposed to happen there and what is important to you, like "bedroom on the ground floor with space for the dog" or for example large children's room, separate bathroom, office with dog sleeping place?, storage space, window seat with a view of the horses (for that it would be great to know in which direction they stand ;) ) and all such topics and wishes once bundled together with the necessary information (above) to write down or to draw the property and mark road, neighbor, horse paddock, etc.
It is not initially about how the floor plan looks; that is the task of an architect and probably some ideas will arise here. But you have to formulate what you expect and what you value and how your everyday life looks like.
The architect of your contractor does not seem to be the most creative, to put it mildly, or has asked the wrong questions or gotten answers that are not necessarily in his favor, because otherwise you could answer the questions ad hoc. The fully completed questionnaire contains a lot of that, even if it is only taken as a guideline for a prompt and answered with "no" or "unimportant."

Thank you very much for your answer. That really helps me a lot right now!

Gladly :) Take a moment or better yet a few days and just write things down. Read it through yourself again and again, maybe mark 2-3 points as priorities and preferably also some points that you explicitly do not want. These are then your internal requirements. At the same time, you can take care of other points like drawings of the "current state" of the property as external factors, both together provide the possibility of an overall concept and relieve you of tasks that someone should do who has learned exactly that or is active here in the forum :P

We also built with a bedroom downstairs and are very satisfied with it. I would like to return to the original question regarding the size of the house, as this also caught our attention. Our house is 8.25x12m plus a small bay window 2x2.5m in the living room. We had our priorities, plot requirements, and then as big as necessary and as small as possible. Because of the costs. So consider how much space you really need for the living room and kitchen. On the ground floor, we have external blinds and a blind in front of the front door so that no one can look inside. The first draft from the architect offers a lot of privacy with the extra bathroom, etc., but that costs square meters. Relatively small with the possibility of a bedroom downstairs, e.g., Scanhaus Marlow Marlow built. The living-dining area is also angled there, which I personally find nicer. Many builders offer sample floor plans on the internet.

Hello and good evening,

I have now dealt intensively with our wishes and created a plan myself. The main house is assumed to be 10.4x10.4m. Windbreak & utility room as a flat roof extension with 2.50x7m.
Above, a knee wall of 1.5m, gable roof.

The entrance is on the west side. Since I have absolutely no sense of spatiality, please consider my amateur sketch carefully. A professional definitely needs to take another look.

Barrier-free access is not a priority now; a separated area is more important to me, hence the access to the bedroom solely through the dressing room. We want a kind of open loft character for the ground floor – the stairs, depending on the statics, preferably as an open steel staircase. The upper floor is certainly not perfect yet, but I quite like the ground floor so far. I can do without the storage room; if the stairs are solid, the house can also be shorter.

Since I have absolutely no sense of spatiality, [...] A professional definitely needs to take another look.

It is no disgrace for a layperson, but rather a good reason to note down their wishes not in the form of drawings, but better in the form of wish lists. Yes, a professional is needed, but a real one, not a draftsman. A "fully-fledged" architect does not require drawing templates, and with a draftsman you even put yourself in "danger" by doing so. So what do you expect from do-it-yourself attempts?