4. Determination of the construction budget. If someone thinks that the lion's share of the allocated funds is spent on technical documentation, and designers bathe in baths of gold bars and coins, I'm afraid to upset you. The figure recommended by the state for design is about 3-5% of the total construction cost. It is clear that this is tentative and applies more to state design organizations. Eminent architectural bureaus (full design cycle) usually estimate their work at 15-17%, the average is 7-10%.
The paradox lies in the fact that even with such minimal scenarios, the customer sometimes cannot or does not want to understand why pay "such a lot of money" and why did the designers raise an unreasonably high price? If you also think that 3-5% of your construction budget is an unjustified waste, ask yourself the question: "How much is your life worth?". I think that those who take responsibility not for one, but for dozens and hundreds of lives, have the right to receive decent pay for their hard work.
5. Experience and qualifications of the designer. I think this is clear and no explanation is needed.
6. And only after all the above points, it is the turn of the architect to directly work on the apartment plans. Here I would like to note the importance of the profession of an interior designer, as well as the understanding by a competent architect of the problems of the next stage, which he can both prevent and create.
We are talking about the possibility of planning the internal space for the needs of a particular customer. This can be done in two ways - firstly, to provide for a free layout of the apartment with a convenient location of communication risers, and secondly, you can initially arrange partitions and expected furniture, taking into account all the laws of ergonomics.
The second option is more common today, as it allows you to immediately show a potential buyer a visualization of his future home.