Which walls can be torn down?

[rutertre]

Hello!

We are planning to buy a house but first want to get a sense of what can be done without ridiculously large interventions. The house was built in the 1950s, a 1 1½-story house with a basement. Walls/floors in concrete. The house has small corners and narrow door passages, we want to make it significantly more spacious on the ground floor by...

1: getting rid of door frames and their surrounding walls on the ground floor. (can these door casings around the door have a load-bearing function?)
2: removing the wall between the bedroom and living room on the ground floor. (this wall has already been moved once according to information and is therefore the only wall that is not in concrete. does it look load-bearing? is it likely that the wall contains load-bearing beams?)

Is it highly likely to do something like the picture to the left? the house is about 8x8m, is any load-bearing structure even needed in the middle of such a small concrete house? or can the thick-drawn outer walls be interpreted as the only load-bearing walls?

 

[Testarn]

It probably depends on whether the intermediate floor is also concrete or if it's wood.

I have a house that is about 8m wide with a basement, and there is a concrete floor between the basement and the living area. Along the entire house in the basement, there is a wall that I believe supports the concrete floor. On the living level, there are lightweight concrete elements in the partition walls, which probably do not carry any weight since there is an unfinished cold attic above.

If your intermediate floor is concrete, it might potentially be self-supporting, but it could also be supported by the walls between the rooms. Depending on how it's cast and reinforced, it could be either.

If the intermediate floor is wood, it depends on the direction in which the load-bearing beams are positioned. If they are vertical in the picture, they likely rest on the walls between the kitchen/bedroom and the hall/living room, and if they are horizontal in the picture, they probably rest on the wall you want to remove and the wall between the hall/kitchen.

In that case, it should be possible to replace it with a beam, but it will be visible in the room.