Have the work contract checked by a professional

How did you find and select the expert? ([Gelbe Seiten? :P]) Did you make agreements on how the expert documents his work? Does he write reports after regular, previously agreed site visits... How can one imagine this in practice?

We came to the expert through word of mouth. There is a contract with the expert stating what he is supposed to do and which stages of the contract his services will be paid for. 5 pages full of text Basically, he is present at the acceptance of each trade, he carries out the acceptance protocol. It is sensible to also introduce the building expert to the developer so that the positions are clarified right away.

In principle, he is present at the acceptance of every trade; he carries out the acceptance protocol.

In my opinion, that is too much; 5 acceptances are enough. Specifically for the trades where nothing can be changed later.

It makes sense to also introduce the building expert to the developer so that the fronts are clarified right away.

What do you mean by "so that the fronts are clarified right away"?

Best regards from the Rhineland

I would assume that the underlying assumption here is that the contractor, aware from the start that the client is accompanied by an expert, puts in more effort and that this possibly prevents damages caused by laziness, carelessness, or sheer ignorance (or that the journeyman on site simply considers the client to be ignorant).

By the way, not a bad tactic. It is also more transparent and fair because this way the construction company also knows who is crawling and buzzing around the construction site.

In my opinion, that's too much of a good thing; 5 inspections are enough. Specifically for the trades where nothing can be changed later on

Personally, that would have been too few for me, but we've already had this discussion. We felt good about it, so that counts for us.

For us, there were 8 or 9 inspections, including lengthy documentation sometimes with pictures. In between, our construction supervisor was also regularly on site checking things. It was positive that he only had a 5 km distance to travel and that he had several construction sites in the development area.

Interestingly, we found our construction supervisor through another construction company where we had requested a quote. We mentioned that we wanted to bring in a construction supervisor. He recommended our construction supervisor, who had just had an article in a regional construction magazine. He described him as a "tough guy" with constructive suggestions. Our banker also knew him and recommended him to us as well.
That’s exactly how he was. He preferred to say right away what the craftsmen needed to pay attention to rather than having things rebuilt afterward.
That was well received by almost all craftsmen. Only our plasterers had to redo work and dismantle things multiple times.

@ Bauexperte don't always take everything too literally
I wrote on my smartphone, so the explanation might have been a bit brief.
Voki1 has already put it well.
The building expert has been involved since the contract design, and my developer knows that too. If the construction manager of my developer takes a closer look on the construction site at least once because of this, I've already saved myself some trouble.
The expert contract is designed so that he is on the construction site for every payment milestone and inspects the work with me and the construction manager.
Everything is fine, I am satisfied with my building expert so far