I am now wondering about two things in particular: 1. Can they examine solid construction just as well as timber frame construction? 2. How open-ended is the assessment, because I have the impression that they have specialized in timber frame construction.
Stone and wood frame panel houses differ quite fundamentally, but in terms of construction service description, contract design and the like, basically not at all. So for 1. I expect a clear "yes". I do not understand the specialization here as a commitment/preference, but simply as a consequence of the fundamental differences. You do not sensibly specialize in ophthalmology and orthopedics at the same time. So I do not expect in 2. a politically missionizing vegan who preaches hatred against meat houses or who wears blinkers. I do not take a truck or bus to the car repair shop, c’est tout. I therefore advise you not to enlist a declared "prefabricated house expert" for the question of which provider of both construction methods you should choose; but only to involve him once you have made the decision for the construction method.
Then he will be able to be useful to you for the
further selection process between Fertighaus Müller and Fertighaus Meier; or regarding solid construction Huber and solid construction Schmitz you can then only need him for the construction service description and contract review.