Floor plan single-family house 200 sqm with pitched roof, 2 full floors double garage

So with service phase 5, you basically get fewer drywall bumps at no additional cost.

I understand your general point, but what do you mean by drywall bumps? Clumsy drywall constructions to accommodate installations because the specialist plans are not coordinated?

I understand your basic statement,

That would be good and would please me.

but what do you mean by drywall bumps? Complicated drywall constructions to accommodate installations because the specialist plans are not coordinated with each other?

The craftsmen each only do what their contract is, for various reasons much today no longer goes "into the wall" as it used to. The craftsmen do not see themselves as "guardians of their brothers." The first does his thing, the next fumbles alongside, each only his own standards and meanwhile also respecting distances between gas, water, and electricity. If the architect does not coordinate, afterwards the house looks everywhere like under the ceiling of a utility room or heating basement. Then come drywall boxes around the multi-track routes of various supply and disposal lines. The chaos is fundamentally inversely proportional to the planning, and accordingly, the casing of the lines is a stigma of carelessly taken or even to chance left detail planning. In construction with a general contractor (GU), it is the rule that a drywall team finally encloses the entire inner work. With individually contracting clients, it is not uncommon that the eighth craftsman comes before the seventh, and due to prescribed distances from each other, corresponding knots occur in the line routes, and each contractor boxes his stuff individually (usually charged separately because the client was not aware of it). Clients with "performance phases 1 to 4" architects often evaluate the saying that the first house is built for an enemy. Detailed planning and construction scheduling pay off: although performance phase 5 accounts for about a quarter of the architect's fee, it is somewhat self-sustaining, because otherwise, in total, dissonances in form and process threaten at about the same price.

We have just signed for almost all trades for 174 square meters on a slab and will probably end up at 700k. Of which 520k is the house.

We had an initial introductory meeting with a graduate today :) Your numbers are absolutely valid. With our needs, he sees 170 sqm as sufficient. The basement will probably also be dropped if I am mentally ready for it.

Regarding your access through the garage. What do you think about a covered area from the garage to the front door? Neighbors of my parents have that and it looks good from the outside. That would definitely save the second door.

Regarding your access through the garage. What do you think about a covered area from the garage to the front door? Neighbors of my parents have that and it looks good from the outside. That would definitely save the second door

Yes, we had also planned that as a compromise.
Nevertheless, we conveyed the wish for garage access to the architect.
But with the emphasis that it is not a must.
If it stands in the way of an efficient floor plan, it can certainly be dispensed with.
The elimination of the basement hurts much more in my dream world.

I will know more in a few weeks...