Floor plan design single-family house with around 150 m²

At some point, it becomes a problem to store things without a basement (whether just office supplies or also vacuum cleaners, etc.). Having 10 m² more garden space does not justify the lack of space inside the house, in my opinion.

Thanks to the shed, I am not worried about substitute basement storage here. I do not see the house as too big or too small, but merely that some designs have a bit too much segmentation compared to the overall size.

Forgotten again: Stairs are not a landing. Depending on the room height, the stairs also have the potential to shrink in width, so that the children's rooms upstairs would be somewhat larger. Currently assumed 2.70m clear room height / 3m floor height.

Thank you for the interesting design. I also find the children's rooms upstairs a bit small. Can the staircase be reduced so much that they become much larger? I do think they should be at least 14 m². I find that a good size. I find the hallway/internet room next to the stairs somewhat wasted space, as there are also slopes in that area. This room will probably be missing from the children's rooms. I find placing the chimney like this interesting, but it will probably be too far to the right side of the plan, as will the fireplace. Since there needs to be clearance next to the fireplace, there won’t be much space left opposite the couch for TV, shelves, etc. The chimney probably cannot run through the load-bearing wall either. Because of this horizontally running staircase, the rooms on the right and left on the upper floor are already very limited in size; I think the narrower the staircase in width, the better. Since a vertical staircase is probably not possible due to the shallow depth (?), you will probably have to go for a U-shaped staircase?

Forgot again: a staircase is not a landing. Depending on the room height, the staircase also has the potential to shrink in width, so that the children's rooms upstairs would be somewhat larger. Currently assumed 2.70m clear room height / 3m floor height.

Approximately 2.6m clear room height (2.75m from top of finished floor to bottom of ceiling)

- It would be nice to have an open gallery upstairs with a desk or something similar.

I find the hallway/internet room next to the stairs a bit wasted, since the sloping ceilings are also in that area.

You’re not really sure what you want, are you?