230V 25A minimum; 3x230V @25A rather common; wiring present (I think in most homes) to deliver 3x230V 50A. Also available to most consumers: 3x230V 80A.
Everything above 3x25A comes at a (steep) premium (3x35A = EUR60/month; 3x50A = EUR90/month; 3x80A = EUR150/month).
I personally don't know anybody having more than 3x230V @25A in their home.