Where can the incidental building costs be found in the list?
Hm, which exactly do you mean? Building permits, soil surveys, insurances, excavation and removal of soil, electricity, water, surveying, etc. are all included in the house price. The floor slab is already in place as well.
It could fit, but not necessarily. What kind of floor is supposed to go in?
With 3k for electrical & co, depending on what you want and what, for example, an outlet costs, it might be tight.
The floor in the ground floor should be about 50 sqm of tiles in wood look. They cost about 40 euros/sqm.
Upper floor cork: between 30-40 euros/sqm
Attic laminate: between 20-30 euros/sqm
For electrical I’m thinking of a LAN distributor with 5 double sockets. Kabel Deutschland sockets 5 pieces. Maybe 3 more ceiling outlets than stated and about 30 more sockets.