Load-bearing interior walls in a villa from 1936?

[simonnnn]

Hello,

I recently moved into a detached house in Tallkrogen, built in 1936. According to reliable sources, the outer walls and the main wall (marked in red on the drawing below) were load-bearing at the time. However, a structural engineer hired by a neighbor has said that the main wall is "slightly load-bearing" and that several neighbors have removed it without reinforcement. To be completely safe, it should be considered as load-bearing, as I understand it.

In the 1950s, the house was extended, which is shown in the attached building permit drawings (both the original and the later building permit). My question now concerns the wall marked in yellow. I would like to remove part of it to build a hall closet but am stuck on how to determine if the wall is load-bearing or not.

Do you have any tips on how to think about this, or what I can further investigate?

Many thanks in advance!

Picture of the house, one-story plus basement:


Current floor plan:


Building permit from 1936:


Building permit for extension in the 1950s:


Picture showing main walls in red and what I wish to remove in yellow:


Simple picture of how the roof trusses are laid:

 

[simonnnn]

Anyone with an idea?

 

[BirgitS]

You may need to check the direction of the beams in the floor structure between the entrance floor and the attic to be sure. If the beams are supported by a wall, the wall is normally load-bearing.

 

[Kane]

You may need to check which direction the beams in the floor structure between the entry level and the attic are situated to be sure. If the beams are supported by a wall, the wall is normally load-bearing.

No floor structure there. You can see the roof truss directions in the first post.

 

[BirgitS]

No beam flooring there. You can see the direction of the roof trusses in the first post.

I remember that Justus once wrote that the direction of the beam flooring could vary between different rooms when it came to houses before the era of standardization. Like if you didn't have beams that reached all the way along the living room, you would place them across the living room, regardless of the direction of the roof trusses.

Now, it's unlikely when it comes to the small extension, but guaranteeing something is another matter.