(1) A contract for architectural or for engineering services places the contractor under obligation to perform the work that is required in accordance with the respective status of the planning and execution of the building or of the outdoor facility in order to achieve the planning and supervision objectives agreed upon by the parties.
(2) Insofar as the essential planning and supervision objectives have not yet been agreed upon, the contractor is to initially provide a basic planning concept serving to identify these objectives. The contractor submits to the customer the basic planning concept together with a cost estimate for the project, for the latter’s consent.