Contracting individual trades vs. turnkey house provider

Good morning forum,
has anyone here had experience with how much you really save if you take on the house construction yourself and contract the trades individually?

The following scenario:
We had actually found a suitable partner, a very well-known provider in Germany who builds with aerated concrete blocks. Here, building a city villa of about 9 x 10 meters would cost around €300,000 (without basement and without tiles/laminate).

Now, an acquaintance said, get an architect and inquire the trades individually.

Assuming I now take a plan and contract the trades individually (civil engineering, roof structure, electrical, windows, heating, screed - to name the main points), how much do you really “save”?
Thanks for your answers.

Search for an architect and ask him at what cost he can build the desired house. Do not forget the architect's fee.

But the architect doesn’t organize the trades, right?

Sure, he can do that. The only question is what the architect is commissioned with. Ours basically does everything. Tendering, comparisons, awarding (of course we sign), site management, acceptance, etc.

We faced the same choice, and I am glad about it. Most people don’t even have the option. If you were lucky enough to have simply bought a plot of land and can now more or less do whatever you want, you should definitely go with the architect (we did that too):

1. You are the one who pays the craftsmen, and they listen to you!
2. You should bring in an independent building expert, e.g. from the Verband Privater Bauherren, who will also check the contracts, e.g. the architect contract.
3. First of all, I would start planning myself with paper and pencil (or a construction planning program). Then start a small architect tender to see who can build this roughly sketched house for you and talk to about 4-5 architects.
4. Try to inform yourself about everything, e.g. here in the forum.
5. Then you will have significantly less trouble than if you go with a general contractor..

Good luck

You should get an independent building expert involved, e.g. from the Verband Privater Bauherren, who will then also check the contracts, e.g. the architect contract

I don’t think I had a single contract for our house. The most formal thing was a signed offer, the rest was done by handshake. However, if you get an architect who accompanies everything up to the handover of the keys, you probably won’t save a single cent compared to the general contractor.