Farmland turns into building land: landfilling, foundation costs, and procedures

That's not the point at all. It's simply about the marked parking spaces.

Exactly. In the displayed plan, non-binding parking spaces do not receive any suggestions for change, the plan acquires legal force, and the parking spaces are no longer non-binding.

I wonder who is supposed to park there if it is a residential area with detached houses? The residents' guests? So, in order for the visitors of the OP to park there, he is not supposed to have access from the same street? Am I the only one who finds that absurd?

I wonder who is supposed to park there if this is a residential area with single-family homes?

Residents? The street is not purely residential, but also commercial.

Am I the only one who finds that absurd?

Well, I don't find that absurd.

But there's no point in badmouthing the development plan and everything about the property and residential area. It is what it is.

I had expressed my displeasure about the access road to the Sparkasse, but I don't think anything will change there.

Where do you see in the BP that the middle WA1 plot does not have parking spaces in front of the house? For me, parking spaces are drawn everywhere there.
I also pointed this out in the conversation and was told that the middle plot then wouldn't have any access at all.
Can that really be? Does such a property owner have a right to access?

The BP says: "At least 2 parking spaces must be created per apartment." I understood that this has to happen on the property itself (e.g., garage + the 5m strip in front).

Where do you see in the BP that the middle WA1 plot has no parking spaces in front of the house? For me, parking spaces are drawn everywhere there.
I also pointed this out in the conversation and was told in response that the middle plot then has no access at all.
Can that really be? Does an owner of such a plot have a right to access?

I assume that of the three possible parking spaces in the public road in front of this plot, two will actually be created and the third (which one will depend on the building application) will be omitted for the access.

The BP says: "At least 2 parking spaces must be created per apartment." I understood that this must happen on the plot (e.g. garage + the 5m strip in front of it).

That's correct, the ones on the street in front of the plot do not fulfill the builder's parking obligations; theirs must be on the plot. Exactly where is usually open (except paved and especially also covered, then also within the building envelope).

By now, the roadworks are supposed to begin in 3 months and the Sparkasse also wants to sell plots of land.

I wonder if it is even sensible to place a garage on the west side (that is, along the main road) together with an access road.
Because I fear that the office will not approve an access road directly at the intersection and will require a minimum distance?
That means the driveway would have to be several meters further east and then with an angled driveway to the garage (or the garage would stand in the middle of the garden :D).

Structurally, only a garage and driveway on the east side make sense then. Attached is another picture of the development plan.