Hello, we want to build a dormer on a roof with a 25° pitch. An architect told me that the Bavarian building regulations do not allow this because the roof is too flat, it has to be at least 35°.
When I, as a layman, read through the regulation, I don't find anything about that. Does anyone have experience with this? Thanks for tips.
Basically, any set square can explain this to you: the flatter the roof pitch, the longer the dormer must be to achieve the same height gain. A window 1 m high results in a dormer 2.14 m long (although you probably mean a "dormer" aka cross-gable). In addition, dormers/cross-gables usually have a shed roof with a pitch not far from 20°, which would make the dormer or cross-gable infinitely long and require an enormous house depth to reach before the ridge.
I think you should at least discuss a concrete building form, otherwise you will never get anywhere.
By the way, I believe we only know the remark from your development plan
"We support everything that creates additional building areas"
as the attitude of the municipality, whose vote the district office usually follows.
Just to ask differently: what do you want to achieve with the dormer?
I can only agree with that.