ᐅ Price for a house of approximately 300 m² with quality finishes?

Hello,

this is my first post, and I hope I won’t get criticized for this "silly" question here.

I bought a plot of land this year (950 m² (10,225 sq ft)) and plan to build a nice house on it in 2015. Not a prefab house, but one designed by the architect who also built my company’s building.

I have a girlfriend with 3 kids, so we need space… and I would like a large living room and a nice bathroom as well. It should have a hip roof, a bit of a Mediterranean style, and two stories.

I know these details are VERY limited, and I already have an appointment with the architect, but he is very busy and will get back to me when he has time (it’s not urgent anyway, there are still about 2 good years). But maybe someone can give me a rough idea of how much a house like this would cost! Excluding landscaping and exterior work...

Here are the facts / wishes:

about 300 m² (3,230 sq ft)
custom designed
high-end finishes for sure
nice / luxurious bathroom
hip roof
double garage

Thank you very much, I’m happy to answer any further questions.

Regards,
Armin