Hello frsytiwo, I am a self-employed construction consultant and found your question interesting, so here is my answer: I would recommend that if you are building with a general contractor, have the contract reviewed by a lawyer. Without this legal review, it can happen that you end up with something you don’t want!!! Better to invest 1000 euros in a lawyer than to later argue with the GC that the construction did not go well.
Furthermore, you can easily present the plans to craftsmen. They will then create an offer based on these plans (if anything changes in the plans, you must inform the craftsman immediately in writing).
Hiring an architect to create the plans was a good decision if you don’t know much about it. However, if you now want to work with a GC (please make sure that this is not a bad apple), you no longer need the architect. Instead, visit your construction site yourself to see what is going on. That way you can immediately notice if something is wrong or if something is being built that you did not want.
Best regards Ricco Neugebauer