Cost of electrical installation in a single-family house

With us, it was also about 15-20 thousand. I don't know exactly. I have to check the calculation. It could also be a bit cheaper – although the question is what is standard. I think some here did the smart home wiring themselves.

We have about 110 sockets in the house, 12x Lan (Duplex cables), 12x Sat in the house and about 25 sockets in the garage + 3x 16A heavy current sockets 1x 32A heavy current socket in the garage. All flush-mounted from JUNG. The intercom system is (I believe) Gira. Chiseling/grooving in EL, installing flush-mounted boxes in EL, laying cables in EL, socket assembly in EL. All together about €11,000

What do you need 25 sockets in the garage for? Commercial use?

We had 100 living space plus 45 basement done in the absolute average standard for just under 12,000. But really without any frills and without a ton of sockets, including [Sat-Anlage]. Most of it was done by the apprentice, the older colleagues occasionally checked and did the "more difficult things". Completely sufficient for us.

What do you need 25 sockets in the garage for? Commercial use?

No, the garage has a basement.. The welding machine has a fixed high-voltage socket as does the pillar drill. Then there is a free high-voltage socket next to the garage door for the wood splitter. And the normal sockets are simply distributed... (Garage is 8x8m, the basement too)
Best regards

Ah okay, so on 2 levels.. good, then it can work out