Tips for house construction companies in South Baden-Württemberg

@11ant I never talked about a single award directly by the client. I would strongly advise against it unless you happen to be a construction manager or similar as your main job and only work part-time in your company during the construction period

And I was not suggesting, from a self-single award, the delusion of managing the construction myself.

We don't have a plot yet

Then any planning is just hot air anyway.
On most plots in new development areas, 3 residential units are not allowed, nor does the development plan lend itself to implementing something like that.

so that we can basically rent out 2 apartments.

You basically want to build a rental house...

I wouldn’t come up with the idea of building a rental house with a general contractor – you should take an architect who can make full use of the development plan and the plot. They know ways to make a rental house attractive.

In your place, I would consider whether you can live with wanting to live yourself in such a house alongside 2 apartments as the owner. Not only does building the fleet of parking spaces cost money, it also costs gray hair, nerves, and years of life to not see yourself as the main person on a property, but to see yourself with strangers (including visitors) on your own land and rather then as a janitor who repairs faucets and heating settings.

Budget-wise, it’s not the case that an accessory apartment pays for itself, so if you demand 150 sqm for yourself and 50 each for the two accessory units, stacked on top of each other plus basement, then you’re at a house price of at least 700,000 without frills plus parking spaces and ancillary construction costs and have a tenant who watches your kids playing from the balcony.
The plot must be big enough to carry all that – then it's a million-euro project, and to realize that with a general contractor like Town & Country? Never!

As soon as we have more concrete information, we are very happy to post the first drafts here as well.

The plot search will be exciting and could take longer than you think.

I just wonder if really everything is included, or if we would get massively annoyed during the construction process because quite a lot actually gets added on secretly.

No, nowhere is everything included. But it's explained very thoroughly in the building costs section. Everything for reading up.
A house is a house and everything concerning the plot is to be paid by you on the construction side. The general contractor has nothing to do with the plot cost-wise.

The basis for the offers were simply project houses that we then theoretically equipped without a plot. With Allkauf Haus, for example, we have an offer for exactly such a multi-generation house including finished basement, with all the trimmings (excluding plot).

What offers do you mean? Did someone offer you something without a plot?
Allkauf Haus offers shell houses, they are not finished, nor do they have basements or floor slabs...

Architect and regional construction company, that’s a good combo.