Floor plan approx. 170 m² single-family house, without basement with carport

1/4 turn staircase for 3500 euros from the general contractor. That one was too ugly for us. So we had the staircase builder install one for 7500 euros instead.

Ok, landing staircase is not expensive at all ;)

On the topic of the garden:
We currently live in the city and have a garden area of only 4.30 meters in length available, and that works well for us.
We don’t need such a huge garden.
What’s important to us is that you can nicely eat and sit on the terrace, that there is space on the lawn to sometimes set up a pavilion, and that there is still room for a play area for the kids (possibly a sandbox; play tower).
Therefore, we do not see the 5-meter lawn area on the north side at all as a "leftover."

You can also already buy large trees/bushes. It’s all a question of budget. It becomes opaque if you take the right plants.

However, I wouldn’t plant such a high hedge directly on the terrace. For us, that seems confining. We once had a bed with fairly tall plants directly on the terrace. We removed it because it felt very cramped. Now, without the bed, it feels much better, more open.
I would rather do the driveway with grass pavers so it looks green and have privacy planting on the fence. If there is only a little space, for example let ivy grow on the fence. Or at most a strip of hedge on the right side of the terrace towards the garage.

We will do both the driveway and the outdoor areas ourselves. Therefore, we could still decide that fairly spontaneously.
But I think grass pavers are a good idea. That surely helps the ground if not everything is paved.
Do they have a major disadvantage compared to paving stones?

That is generally the case. But if you have to pay 3,000€ per sqm, 30 sqm is not the 90,000€ extra (since the technology of the house is already planned anyway) but rather then 40-50,000€ additional cost.

We have a fixed price for the 110 sqm floor area that is already set. Each additional sqm costs between 1,800 and 2,000 euros.
That’s also why the extra budget of 25,000 for the floor plan is planned. We definitely don’t want to increase by more than 10 sqm.
But if we didn’t need the budget, that would of course be all the better.

A straight staircase doesn’t cost the world, but it takes up a lot of space if you want it in a hallway and not open.
Katja’s stairs are expensive with landings… I don’t know about Katja’s program either, as often a different stair variant is shown than she means.
Here is the quote of “it would be nice,” which I refer to.

Okay, we would certainly have to ask about the extra cost for a landing staircase. But if that is too expensive, we could also take a half-turned stair, right?
In the past, we were too focused on a straight staircase and now realize that it brings too many disadvantages. Therefore, it is no longer an issue for us if it is not a straight staircase. A landing would be nicer than half-turned because of the wider steps in the stairwell and thus greater safety for the children.

I don’t currently see the room program (due to the sketches I made last night). Whether you have to have a straight staircase, which will be walled in anyway, I doubt. And I also do not really see an extra corridor to the utility room and pantry as feasible if you also want nice living spaces.

I don’t understand that yet. Katja’s floor plan meets our entire room program, doesn’t it? Honestly, even more than we thought. The office looks significantly more generous than we planned. The pantry also looks very large. And you could even realize a storage room under the stairs, right? Even if not, the pantry looks big enough that we could do without a storage room.
All the living spaces also look decent. Of course, it is not easy to assess since the size in sqm is not shown. But in principle, it looks very good in terms of the room program. Only the dressing room is missing – but we could easily do without that as well. Although the proposal with the north terrace even included that.
What am I overlooking?

The advantage of your plot is that you don’t have to protect yourself from a main road. I don’t know any backland plot, no house in the second row or small dead-end street that also needs major protection from their own yard and car. ;)

What do you mean we don’t have to protect ourselves from our own yard/car? Do you mean that no privacy screen is necessary there?

We will do both the access road and the outdoor facilities ourselves.

That is brave. Do you have an excavator with a driver in the family? The access road was the first thing I entrusted to my general contractor because it was unrealistic for me to do but important to "arrive" initially.

We have a fixed price for the 110 m² floor area, which is already set. Every additional sqm costs between 1800 and 2000 euros. That is why there is an extra budget of 25,000 planned for the floor plan. We definitely do not want to get bigger than 10 sqm. But if we did not need the budget, that would of course be even better.

No offense, but please show your contract section on this point. You don't have a finished floor plan but have a fixed price between 1800 - 2000 euros?

Grass pavers have disadvantages when clearing snow because it is not a smooth surface. And you can't just quickly sweep them like a paved surface; you have to take care of the grass in between, mow it.

You can also create a driveway yourself if you have a reasonably level surface, enough time and strength. And if necessary, these small excavators are also available for rent.

That is brave. Do you have an excavator with a driver in the family? The access road was the first thing I assigned to my general contractor because it was utopian for me to do, but important to "arrive" first.

We have an acquaintance in the family who used to do that and will help us. We want to rent the mini excavator.

No offense, but please show your contract section on this point. You don’t have a finished floor plan but have a fixed price between 1800 - 2000 euros?

All good :). We signed a house contract based on a certain price list. All changes we make will be determined according to this "old" price list. The basis for our contract conclusion was a floor plan with 110 m² floor area. Any floor plan of the same size would therefore be cost-neutral for us. The 1800 - 2000 euros more per sqm is the statement of our sales manager. In the meantime, the prices there have already increased by more than 10% - but as I said, luckily that no longer affects us.

Grass pavers have disadvantages when clearing snow because it is not a smooth surface. And you can’t just quickly sweep them like a paved surface, you have to take care of the grass in between, mow it. You can also lay a driveway yourself if you have a reasonably level area, enough time and strength. And if necessary, these small excavators are also available to rent.

Okay, that makes sense. Grass pavers are more labor-intensive to maintain. :)