Assessment "Fixed Price" Detached Single-Family House (Solid)

Hello everyone,

also for the last comments: Thank you very much!

Regarding planning: It started with an existing plan, which was basically the entry into the whole project. We lacked a few square meters. Especially a guest room. A second bathroom – regardless of whether it is for the guest or not – I already see as sensible in a household of 4 people. And with that, we then went through several rounds with the architect. Upstairs the straight staircase was mentioned -> Bingo ;) That is currently also included for us.
Without wanting to upload the plans: The children's rooms are each about 14 m². Just for orientation, because 20 m² was once mentioned upstairs. Bathroom 11 m².

We will be seven-figure all-in. No question.
We can reduce (see discussions here) and we will. The question of costs eventually becomes a question of "willingness to pay" and not of "ability to pay" -> price-performance ratio. Specifically my concern: If by cutting things out we would come down below 1 million, then I don't want 120 m² standard semi-detached house planning for that.

Are there recommendations on how we should proceed here together with the architect and especially the developer? Where they know our pain threshold and know that we are willing to make compromises in the planning? I want to avoid that the costs saved through the reduced planning will only be partly felt on the final price.

Everything a bit smaller, but efficiently planned.

My specific concern: If we were to reduce things to below 1 million by cutting, then I don't want a 120 m² standard semi-detached house plan for that.

[*]Technology/house connection/heating with washing machine/dryer
[*]Storage for both food/drinks/household items like cleaning supplies as well as car tires, garden tools
[*]small workshop area
[*]hobby room, especially if the hobby/fitness area in the attic would be removed

[*]Entrance with wardrobe
[*]WC
[*]Living/dining/kitchen area (open, with island)
[*]2 children's rooms
[*]Parents' bedroom
[*]Bathroom (not freestanding tub, shower, WC, double sink)
[*]shared dressing room with laundry chute
[*]guest/work room -> this should be on a floor separated from the children’s/parents’ area
[*]a second, smaller bathroom (shower+WC)

Hello Jenny,
I’m jumping in here because we have similar ideas for a house (potentially), except that we’re building without a basement. Our living area was initially planned by the architect to be 200 sqm, which significantly exceeded the set budget. After the first reduction to 180 sqm of living space, we realized that the floor plan didn’t work and the architect had to start over. What came next blew us away and that’s what we’re building now.
Ground floor: office (15 sqm), guest WC with shower, utility room, living-dining-kitchen area (the latter could have been 5 sqm larger, but we need a large office, which for you might be a guest room).
Upper floor: 2 children’s rooms, bedroom with relaxation area, bathroom with integrated sauna.

Everything is somewhat smaller but efficiently planned. I would have liked to send you the floor plans as a private message but I’ve been registered here too briefly.
We are building with open tendering and in M-V, but all in are around €2200/sqm. If interested, I’d gladly upload the floor plans.

Key takeaway at the end: Sometimes it helps to scrap everything and start over or let someone start over.