Hello,
we initially also had concerns about the additional electrical equipment. However, the builder assured us that enough sockets and switches were included.
The positioning was then done directly during the shell construction. Our electrician even suggested additional positions for sockets and switches.
Result: Everything included except the previously discussed "special items" such as network (+100 €), satellite (+50 €) and staircase lighting (+500 € including lights).
All of this was neatly installed in a large distribution box. There is also space for the router and other technology inside.
So far, with these listings, you can see that a double socket additionally costs between 0 and 150 euros? What does that bring you now?
Better just ask your electrician about the surcharges and that’s that. If you have already signed the contract, you have no other choice anyway. Otherwise, you can still try to negotiate the price down or outsource the work.