Single-family house approx. 150 sqm floor plan - How to plan the staircase?

We only have a small side panel and a total of 1.65m for the door + side panel. Door 1m side panel 65. Although I'm not sure because of the frame in between. I'll have to check that tonight. If I were to build again, I would have no problem at all extending the window completely over the stairs. Would ask the stair builder first what is possible.

common width of a front door with narrow side panel revealed

+/- 1.6 m (size of the opening in the wall)

had read that most construction companies work with 15 cm for load-bearing walls or 12 cm for partition walls.

That must have been a very unreliable source.

We had considered making the interior walls with sand-lime brick because the sound insulation is supposed to be better.

I always have to smile when I read that. Which of you really gives both children an electric guitar or a drum set? - normal residential noise can be handled by other walls as well. The idea that you can put a biting wall in the way of sound is anyway a naive notion.

Construction companies prefer about 50/50 one of the two most common ways, either sand-lime brick or the same brick as for the exterior walls.

can someone tell me the roughly common width of a front door with a narrow sidelight?

A front door is usually sized at 1.01 or 1.135 m width. Sidelights under half a meter seem too frugal to me. Overall, one usually ends up (with one sidelight) between 1.51 and 1.885 m.

I have two younger siblings in their teenage years and when I visit my parents and heartache songs by a boy band are blasting on repeat and at full volume throughout the house, you definitely start thinking more about soundproofing [emoji23]

Which of you actually gives each of your two children an electric guitar or a drum set?

Well, we have both. Isn't that normal?

- With normal residential noises, other walls also do fine. The idea of putting a biting wall in the way of sound is a naive notion anyway.

I don't know. The walls we have now are really poorly soundproofed. Since it's just the two of us, it wasn't an issue. In my father's old building, the interior walls are all over 20 cm thick. The whole house is much quieter. The doors are all fairly cheap and new – it can't be because of that. So it must be the walls.

I have two younger siblings in their teenage years and when I'm visiting my parents and heartache songs by a boyband are blasting through the house on repeat at full volume, you definitely start to think more about soundproofing [emoji23]

Aren't there headphones for that? [emoji33]
Or a different upbringing with a focus on consideration [emoji848]

Why do you always post your phone brand???