Floor plan of existing house, optimization & enlargement

I didn’t exactly want to hear that from you :-/ I have reached out before, but actually my network has hardly any connections with architects, and no one here has recently built anything. Foolishly, I’m not from here myself, it would be easier at home.

Here with hallway new and open space?

Best is an architect who has a good relationship with the building authority. The dormer that is allowed according to the development plan is exactly 1 m wide. Everything suddenly worked out in our building area with the development plan. Huge shed dormers, different roof shapes, relaxed boundary distances, etc.

Isn't 1/4 of the roof width allowed? So actually about 4 m. Or does the 1.2 m2 roof window also apply here?

I am already diligently googling, I hope we find someone reasonable. I will also ask the appraiser for recommendations.

But quite a bit of the 1/4 has already been used up. Measure how wide the existing dormer is. If necessary, the two dormers could be made the same width. Then just reduce the size of the existing one a bit.

Hmm, you're right, I'm bad at estimating, I thought there was still plenty of space... According to Adam Riesling, a 2x2m dormer should be feasible, that should be sufficient for the two rooms, especially since the roof is steep enough at 45 degrees anyway.