In our case, he doesn’t calculate a preliminary design because I provided it. But he does indeed carry out service phases 1-2, as far as I know. The general contractor definitely does the execution planning.
The architect planned the house up to and including service phase 4 with the building permit. With the approved plans, I then obtained offers from regional general contractors.
The work planning of a general contractor does not replace the detailed planning of the architect any more than a "construction manager" replaces a construction manager (see: "Of Construction Managers and ... Construction Managers"). According to the approval plans, one
cannot yet build, but one is
allowed to. This "fine" ;-) distinction becomes most obvious in the form of drywall installations, the birthmarks of saving at the wrong end.
The concept markets itself as architect-planned turnkey construction. He still has a few gimmicks, as he writes, only for general contractors who haven't caused problems in the past, are solvent, etc. I see the advantage in hopefully having a reasonable design but also building with a fixed price.
The concept is at least market-appropriate insofar as it can count on much approval from the "consumer client." It is good if he explicitly tenders to proven bidders – less smart, however, if he only does this to general contractors. The concept is similar to that of an architect-GC, just without the architect playing GC himself. In my opinion, this is not the royal road but quite a considerable alternative. I am – inspired not least by – engaged in incorporating this approach into my consulting practice.
And this scope of services is structured so that one could go to any general contractor. Is it always like this in the awarding service phases?
With a construction service description, one should actually always be able to go not only to general contractors, but with them probably to all.
The offers were still not 1:1 comparable, but nonetheless transparent enough for further negotiations. The general contractors naturally shy away from deviating from their standard construction service description because it is difficult or calculable only with extra effort.
The transparency "arises" here mainly through one's own construction service description; thus, "approval planning plus construction service description" is definitely considerably more meaningful than without. For the basic topic of deviations in construction service descriptions see (also) here with the search term "11ant Steinemantra."
That gives me courage. I just stumbled out of curiosity upon a thread with 11ant and GerdDieter, where I immediately doubted our approach. So far, however, we have not signed anything with our architect. Everything is acquisition so far, but it is so hard to decide on an approach.
Which thread was that (it is allowed to link internally here)? I think you should go the intended path without doubting, with one small difference: the architect should not limit the tendering to general contractors. As far as you cannot yet use private messaging, you will find the way to send me one externally here with the search term "11ant gmx." I would be interested in the name of the architect.