Feedback floor plan - size and price ok?

A lot of money can be saved by buying a caravan

I roughly calculated that this should be about 265 sqm without the garage and with complex architecture (many setbacks and protrusions). With a lot of luck, the 545k could be enough for that, but it can be quickly exceeded with the elaborate architecture. But then without additional construction costs (including architect fees), outdoor facilities, kitchen/furnishings and probably also without the garage (and that will be nicely expensive when integrated like this).

And yes, that is already very large for 3 people and for the size, some tight spots would annoy me (kitchen, wardrobe, narrow children's room, no separate children's bathroom).

If it fits the budget,

Price estimate according to architect/planner: 545kEUR Personal price limit for the house, incl. equipment: 450kEUR

Alright, I take it all back! I overlooked the price limit since it was posted afterwards. Sorry...

And I can't stand architects like that, you go there, state your budget (I hope you did that), and then they design such castles in the air. It doesn't have to be like that with everyone, but that's the experience I had with 2 architects as well.

The budget does not match the house. I would adjust both. Larger budget, smaller house. All the projections cost a lot of money, the slope costs money, and then the size. It’s fine if you can afford it. As the house is planned here, I expect more around 800k than 400k.

You are building a semi-detached house. Do you have the same architect as your neighbor? That would be recommended.

I would remove the granny flat.
Reduce the footprint.

The reading corner can become a separate room in the basement. Such nice large open living spaces offer so little privacy. It already starts when the wife wants to make a phone call in peace or the husband wants to watch football.

Entrance, wardrobe, reading corner, building services in the basement.
Smaller open space on the ground floor, pantry better designed so e.g. a freezer can fit.
And the open space can be smaller. It won’t hurt to reduce it by 20-30 sqm. That easily saves 40-60k.
I would remove the bay windows (reading corner, above garage). Bay windows cost almost as much as enlarging the house across the entire width.

Upper floor
Remove the son’s gallery. Quote from our architect: It immediately costs 5,000 euros. My 3 children all have one, it’s interesting for 4 weeks and that’s it. The children’s room is huge.
About twice as big as normal.
Gallery is a matter of taste. Costs money and privacy.
Washing machine in the upper floor where the laundry accumulates.
Bay window removed from the bedroom.

Some of the appearance can perhaps be achieved with wood or color accents.