Floor plan design single-family house (city villa 140 sqm) on a slope with double garage

So I was just at a provider nearby "Town & Country". Please don't start now with "is the cheapest on the market..." it was only 15 minutes away from me. I have a detailed conversation coming up soon, but today I was told that the house I want, max. 139sqm, would cost between 165 - 180k including additional construction costs. They calculate 50k for additional construction costs and might increase this due to the hillside location, etc. That is then also okay.

No, I haven’t signed anything except that they are allowed to contact me "Data Protection Act". And what do you say about it? Another question mark!

Then tell us what is in the [Bauleistungsbeschreibung]! Or improve it, otherwise we will be to blame that it doesn't end up being 180k€.

Your next step would be to go to a [Bausachverständigen] and have the [Bauleistungsbeschreibung] checked so that you know what is missing!

Same here. We wanted to move a window and a door. No, that’s not possible, only for an extra charge, if at all, actually we don’t do that, we had a plan in mind. Just complicated. We didn’t get as far as the equipment back then. It was a first conversation to get some orientation somewhere, and they’re not that far from us. That’s why we were kicked out shortly after the point “We want to build sometime, let’s have a look.”

And who did you finally choose? And are you satisfied?

Then tell us what is in the construction service description!

Of course, I will gladly do that.

Hopefully you see that I take your advice and inform myself!

Of course, I am happy to do that.

Hopefully, you can see that I take your advice and inform myself!

I have added something to my comment.

I have added something to my comment.

I have already read it and would definitely take it to heart!

Are there basically prefabricated house providers who come out well here based on the experiences? Yes, I have already used the search, but with your extensive experience, you can surely immediately say which one is more recommendable.