hello orschel,
short and to the point, if you want to build a *real* architect-designed house in the new sense of the term, truly individually planned and with a very personal touch starting with the architecture itself, choice of materials, building services inc. energy efficiency up to the interior construction in connection with the furnishings, then do it with the architect....... a sorry, 0815 from the catalog of the developer or similar, exactly with these........ the main advantage with the developer or general contractor would be the cost guarantee so that the project runs successfully......... so, the house for life should also be such a one...... which speaks for the architect and the *cost risk*......