Floor plan of an accessible bungalow

The floor plan is already better than the previous ones, but I can't get used to the angled bungalow. You have exactly one south-facing window, but it is located under the terrace roof.
Otherwise, I count 142.58 sqm compared to 127.66 sqm in my last plan.

Besides the utility room, which by the way should offer the same floor space as the utility room in the angled bungalow (which loses space due to the additional door), there is also the storage room in my solution.
The wheelchair parking space is directly next to the storage room in my solution ... could be separated by a wall (this is how I had it in the first version without the angle).
Covered terrace seating area is also present in my solution with a connection to the west terrace.

2nd children's room ... there is the option to install a staircase after all and use the attic ... or to increase the floor area analogous to the angled bungalow.

And then take a look at how the driver is supposed to get out of the car in your carport. And it still doesn't make sense why the house needs these 2 entrances.

I have asked one or more questions, but unfortunately I get everything except answers. It is not about occasionally arguing that my plan is better than yours!
3.75 m for a carport is a recommendation for a barrier-free carport.

To your questions:
No, there is currently no way to change the doors of the bedroom and child 2 without possibly affecting the entire house.
You can determine the window heights. However, care is taken not to use too many different dimensions. Your suggestion should be ok.

Since I find the course of the thread very strange, let me say this:
Even if Kerstin says otherwise, the floor plan is getting worse because the hallway is getting bigger. You are now at just under 30 sqm, what is the upper corner for? Cloakroom? Are shoes supposed to be stored in the hallway there????
Between the pendulum movement of the living room and the wheelchair room, you also take a 90-degree corner (for the shoes). I would really be happy if this can simply be accepted. But I don’t believe it.
The planner is an idiot, my regards to him. He doesn’t plan but patches things together and draws everything according to your wishes without backbone, the main thing being that the wheelchair circles fit in.
May I ask where your child is supposed to spend time? The house offers no place where he can stay and participate in family life—I only see the parking station and 2 storage spaces in the living room.

The idiot even drew the vehicle the wrong way round.

I don’t have my last draft in mind right now: but there you criticized the children's rooms, which were larger than yours here. You also criticized the dining area of mine, although it was more present than yours now.

Zizzi, you have twisted yourself up in your head: I believe your focus is on the utility room as a passage. The bathroom if the front door were already hanging in the carport, you would blindly still want the utility room there.
Take a completely neutral look at all proposals... and evaluate the living and functional value. Don’t pay attention to missing 20 cm, because these can probably still be made up, as seen in the last draft.
Certainly, you don’t have to convince someone who doesn’t want it or who has the usual blinkers on, but you have to look at the designs objectively.

Here’s a spontaneous illusion killer: a utility room for 2 people, both orderly, therefore a lot is also temporarily parked in the utility room. You won’t have less

Are the terrace doors you planned actually supposed to be sliding doors? At least according to the drawing, that’s how it looks. But then no wheelchair fits through. And if they are double-leaf doors, you have to be aware that both leaves always have to be opened to let a wheelchair pass through.

The second sink in the bathroom has not been considered yet.

In general, I also find there are too many corners for the wheelchair user.

In the living area .. the distance between couch and TV might sometimes be a bit too far, but the wheelchair only works in the kitchen if all chairs are always neatly pushed in at the table.

In general, the kitchen is not that huge either.

375 cm may be specified as the minimum dimension for a carport for disabled use. But minimum dimensions are not always comfort dimensions. And if I were building new, I would try to make everything fit comfort dimensions.

I would also always choose the smaller variant with the option to bring child 2 or parents into the attic. Also consider a bathroom above the guest WC there. For example, with a nice bathtub ... as a place of rest for the parents.

The planner is an idiot, best regards from me. He doesn’t plan, he just patches things up, and draws everything according to your wishes without any backbone, the main thing is that the wheelchair turning circles fit in. May I ask where your child is allowed to stay? The house doesn’t offer any space where he can stay and participate in family life – all I see is the charging station and two storage spaces in the living room.

That’s how it is – this is not a wheelchair-accessible house, but just a barrier-free one. Namely a catalog house with widened hallway, wider doors, and a roll-in shower. Wheelchair turning circles are not consistently included either, but merely occasionally dotted into the plan to justify wasted space. As a former severely disabled civilian service worker, I have been watching the discussion for quite a while just from the sidelines.

Are the terrace doors you planned actually intended to be sliding doors? At least according to the drawing, it looks that way. But a wheelchair won't fit through there. And if they are double-leaf doors, then you have to be aware that both leaves always need to be opened for a wheelchair to pass through.

Yes, they are planned as sliding elements. Now I see that they are not wide enough for a wheelchair. Thanks for the hint.

The second sink in the bathroom has not been considered yet.

I got information from wheelchair users and/or the parents of wheelchair users who said that two sinks are unnecessary, so one height-adjustable sink will be completely sufficient. Some even said that a 1.5 m wide hallway and 1 m wide doors, which are referred to as the minimum size, are really enough and sometimes more than enough.

In general, I think there are way too many corners for the wheelchair user.

Corners are basically unavoidable, but of course I try to reduce them as much as possible. So I am still thinking, for example, to mirror Child1, place the closet and door on the left side and the door on the right. Or maybe leave out the upper wall of the wheelchair parking space (but I find it useful as a privacy screen. Alternative?)

In the living area... the distance between couch and TV might sometimes be a bit too far, but the wheelchair only works in the kitchen if all chairs are always nicely pushed in at the table.

I agree with you; personally, I find the distance between couch and TV (wall to wall) of 3 m to 3.5 m optimal (depending on image quality and TV size). In our current apartment, I have a distance of 4.80 m. Because of my son, I find it big enough so that he can comfortably watch TV in his wheelchair or standing trainer or even play and watch TV on the floor on his play mat. In my third floor plan, I have a distance of 5.25 m. I wonder if I should later get a bigger TV and/or arrange the furniture differently? We have made the living room a bit narrower and longer in this floor plan to somewhat separate the dining and living areas (better spatial feeling and furniture arrangement).

I would always choose the smaller variant with the option to move Child 2 or parents into the attic. Also consider a bathroom over the guest WC there. For example, with a nice bathtub... as a quiet place for the parents.

If we give up the study, we will have a floor plan that no longer has these problems. I have no problems with a finished attic. But if I now give up a room downstairs and really make the attic well expandable (at least 50 cm knee wall height, stairs, insulation, possibly dormer, electricity, water, sewage, etc.) and later only finish it with drywall, then I am looking at an investment of over 30,000 € more. (It affects almost all trades) and if the ground floor were somewhat smaller, it wouldn’t make much difference in price. Therefore, I have generally given up on attic expansion and possibly want to have everything downstairs.

where your child is allowed to stay? The house offers no space where he can stay and participate in family life - I only see the parking station and 2 storage spaces in the living room.

What exactly am I supposed to plan. A Ferris wheel and carousel in the living room or a mini hospital. I find your writing partly good with a neutral assessment but unfortunately other parts are nonsense.