Floor plan house with granny flat - improvement suggestions?

Good keyword: what do you think about my suggestion that you reflect in a way that one can build upon, the drafts in posts #89 and #116?

...I gladly do that:-). Thanks again to Würfel for this planning.

Draft Würfel:
1.0. Ground floor
1.1 Likes HW: Living/Dining is larger. Straightforward planning.
1.2 Likes granny flat: Living/Dining is significantly larger and thus the requirement for the size of the room should be fulfilled
1.3 Likes less HW: Does the underside of the stairs protrude into living/dining?
(1.4 Likes less granny flat: The utility room adjoins the living/dining)
(1.5 Likes less granny flat: Corridor/wardrobe feel very small)
1.6 Likes less granny flat: A small storage room is missing

2.0. Upper floor
2.1 Likes: Completely different approach to accommodate the brother.
2.2 Likes: Children’s bathroom in the north
2.3 Likes: Larger master bedroom with en-suite bathroom
2.4 Likes less: One bathroom too many - maybe one bathroom can be shared with the brother, but it should not be possible to access our apartment from the bathroom, i.e. the bathroom should perhaps be lockable from outside (just an idea).
2.5 Likes less: Utility room is missing

Legend / explanations would be helpful.

Quickly:

According to the new VDE-AR-4100:
When planning the building entry of the network connection cable, the connection to the network connection point must be possible via the shortest route.

According to DIN 18012:
The house connection room must be located on the exterior wall of the building.

According to DIN 18012:
The drinking water and heat connection must be planned analogously to the electricity connection. A multi-utility house entry (gas and water tight) is mandatory, so that there is one and the same house connection room.
→ The VDE-AR 4100 working and operating area according to chapter 5.3.4 (including annex A) must be taken into account.

...I gladly do that :-). Thanks again to Würfel for this planning.

Draft Würfel:
1.0. Ground floor
1.1 Likes HW: Living/Dining is larger. Straightforward planning.
1.2 Likes granny flat: Living/Dining is significantly larger and thus the requirement for the size of the room should be fulfilled
1.3 Likes less HW: Does the underside of the stairs protrude into living/dining?
(1.4 Likes less granny flat: The utility room adjoins the living/dining)
(1.5 Likes less granny flat: Corridor/wardrobe feel very small)
1.6 Likes less granny flat: A small storage room is missing

2.0. Upper floor
2.1 Likes: Completely different approach to accommodate the brother.
2.2 Likes: Children’s bathroom in the north
2.3 Likes: Larger master bedroom with en-suite bathroom
2.4 Likes less: One bathroom too many - maybe one bathroom can be shared with the brother, but it should not be possible to access our apartment from the bathroom, i.e. the bathroom should perhaps be lockable from outside (just an idea).
2.5 Likes less: Utility room is missing

I am curious about your comments.

Planning by ypg Post #116. I find it architecturally very sophisticated, I particularly like the balcony in the south. But for now I would like to focus on Würfel’s planning and try to optimize it further. The reason for this is that the building permit for this planning already exists and changes would probably be cheaper and easier to achieve with the construction company.

And somewhere you still want to store the kids’ bikes or yours?

The bikes could theoretically also be stored on the north side of the house.

What are you thinking? A space-saving staircase, where healthy young people have already injured themselves because they are so steep? It will probably be the case that seniors also use the upper room or clean and ventilate it when the son is not there?!

Ok, that was probably a bit too optimistic to think the problem could be solved by a smaller staircase. However, new problems will probably arise because of it.

But that is a bit unfair to : she usually plans like a pro, mostly with non-straight stairs because they save space, and now you come along saying a straight staircase is desired. There is nothing about that in the initial post, as far as I remember. I even checked myself “back then”.

Sorry, I should have written that we would like to stick to a straight staircase.

2.4. Likes less: One bathroom too many - maybe a bathroom can be shared with the brother, but it should not be possible to access our apartment from the bathroom, i.e. the bathroom should possibly be lockable from the outside (just an idea).
2.5. Likes less: Utility room is missing

I thought it was now fixed that the brother basically gets space in your guest room when he is there. Why shouldn’t he share the children’s bathroom? Especially since your initial plan still provided for only one bathroom for you and the children? Moreover, by sharing the bathroom, the brother’s bathroom planned by Würfel can become the missing utility room on the upper floor.

1.5. Likes less for the granny flat: Hall/wardrobe seem very small)

About 100 cm is firmly planned in Würfel’s plan – in the original plan there is nothing planned there at all… and although you can place a closet in the hallway, that is actually less harmonious than in Würfel’s plan.

(1.4. Likes less for the granny flat: The utility room borders the living/dining area)

So what? Lots of hallway is avoided in the granny flat. The living area in the granny flat is furnished as an example in a way that you can also easily access the utility room using it as a connection.

1.3. Likes less utility room: Does the underside of the stairs protrude into the living/dining area?

I don’t understand.

1.6. Likes less for the granny flat: A small storage room is missing

There was no granny flat storage room in the original draft either.

In a hurry:

I was thinking more of explanations of the two pictures (on the left, what is the thick line in the middle of the image, on the right, the labels of the things with the numbered red dots, etc.). And/or you say (caution, without a link!) where this information can be found ...

The space requirements for the technology in the utility room are not insignificant. I have heard from several builders that they had to quickly redesign the utility room because it was originally planned too small. I have attached the specifications from the municipal utilities regarding the space requirements here.

With this planning, 2 doors in the utility room would be difficult, right?

I thought it was now set that the brother would basically get space in your guest room when he is there. Why shouldn't he share the children's bathroom? Especially since your initial plan still provided that you only have one bathroom for you and the children? Moreover, by sharing the bathroom, the brother's bathroom intended in Würfel's plan can become the missing utility room on the upper floor.

Okay, I believe it can’t be solved differently here. If the brother is to get his own shower bathroom, then we would have to forgo ours. The utility room could be the former brother's bathroom, unfortunately the utility room would have no window, which would still be okay in an emergency but is not ideal.

About 100 cm is fixed in Würfel's plan – the original plan doesn’t have anything there at all... and although you can place a closet in the hallway, it is actually less harmonious than in Würfel's plan.

Okay, then the hallway planning for the granny flat is fine.

So what? A lot of hallway is avoided in the granny flat. The living area of the granny flat is furnished by way of example so that one can also easily access the utility room to use it as a connection.

I understand. I only hope that the appliances in the utility room won’t be audible in the living room. But I do not expect that.

I don’t understand.

I wanted to ask whether one will also see part of the underside of the staircase in the living room. Würfel reduced the hallway and thus enlarged the living room a bit.

There was no storage room in the granny flat in the original design either.

Under the staircase of the granny flat there should still be a very small storage room in the original plan.

If the brother is going to get his own shower bathroom,

... the career as a stay-at-home child is sealed.