Extension planning for house from the 60s

The 3D views including 2D variants were made with SketchUp. However, still in the free desktop version ("Make"). The downloads can still be found partly at Trimble. Simple 2D floor plans and sketches were created with Inkscape.

New idea for a "serious" variant that would be large enough.
Simply extend the roof downwards, which automatically determines the size of the conservatory on the ground floor. Make the room usable on the upper floor by adding a dormer.


Section at 1.8 m height. If needed, a corridor could be separated from the bedroom (top middle of the plan) to access the new room.
Without the corridor, it would only be the study; with the corridor, a guest room or additional children's room can be created if needed, without having a walk-through room.

S

The size of the dormer/dormer roof angle and window arrangement/size is only exemplary and would require design optimization.

Then the dormer room will be the future study? So if there is enough space, it is a nice idea that I also find pleasant from the outside. The extension fits in harmoniously and does not dominate the entire building.

Then will the dormer room be the future office?

Exactly, only guests would have to stay overnight in the living room.

I also created a photomatch:

I also like the option. But is it worth it? The gain in space is manageable, actually just the balcony, right?

The existing "winter garden" would be replaced. Whether it is an extension of the living room or a real winter garden with large window fronts. Currently, it is a makeshift solution from the first owner and window manufacturer:

[*]built on an old terrace
[*]missing foundation
[*]no insulation in the roof (wooden construction with patched roofing felt)
[*]subsidence/cracks
[*]winter = outside temperature
[*]summer = sauna

So the room is currently not usable and can only be dismantled. We don't need the balcony either, so it can go as well.
Upstairs, the study/guest room has disappeared due to the new addition to the family. The dormer room is suitable as a new study.

Yes, it will probably cost something, but we don't need it any bigger. We will probably forgo the basement, as far as it can be resolved structurally.