New construction - How to build economically sensibly?

immobilienscout24.de/expose/84233839#/

Oh. Man. This is a bait offer that can be found all over Germany. It has nothing to do with a real existing and habitable house. Nor does it have anything to do with your region. Just take a look at the floor plans. First, there is a 90 sqm bungalow. And even that is ambitious including the plot at this price...

The mentioned offer from Mainz can be found under Scout-ID 84233839, if interested

At least make the effort to read the last posts.

These houses are being built or are already standing here in the development area.
And yes, the 226000 is the price including the land.
But whatever, I seem to be imagining things.

Certainly, if you want more features, you can still pay extra for that.

226k for what exactly? Floors, ceilings, plumbing already included? How many sqm again? Garage/carport included?

Everything finished or does something still need to be done, if yes, what?

One of them is being built by a friend, about 5000 EUR extra came on top, sockets, different tiles, etc.

That alone is already grossly untrue. In the description of the ad, you are explicitly informed that all additional construction costs also apply.

Yes, of course they are included, no one has ever said otherwise. They are also included in my bungalow. We are talking about the house price in this case including the land. You are twisting everything now.