Single-family house with 190 m² and a 55 m² granny flat in the basement on a slight slope

I do not understand the additional costs for the pitched roof. Do you have specific offers for that?

My pitched roof (20 degrees) cost less than the additional costs you specify. Concrete work, on the other hand, was expensive for us.

I don't understand the additional costs for the pitched roof.

Yes, it also looks "special" to me, estimated. Here is what I have as an offer, the house itself has external dimensions of 11.5m x 9m on the upper floor. Net prices, insulation naturally depends on the building standard and is the same for flat roofs: