How to obtain an exemption from the development plan?

Well, it doesn’t really matter. I can only say that in many respects I am not standard and I keep noticing that in this forum. But that’s okay. You just have to assert yourself against the usual opinion more often. But it will work out

I understand you and think it’s okay not to accept the general opinion but to try to realize your own ideas. However, I’ll give you a piece of advice: always put yourself in the other person’s shoes.

Especially the people at the LRA deal with building permits every day. Everyone wants to deviate somewhere and realize their own dream. If they approve that every time, then you can basically forget the development plan because then everyone builds whatever they want. So a balance has to be found between approving exceptions and adhering to the development plan.

I’m certainly no expert in the field, but I would have a professional (architect) talk to the LRA. They know the possibilities and can prepare the basics (e.g. other deviations from the building area) accordingly and discuss on equal footing with the people involved. Or how would you feel if a layperson came to you and tried to explain what is allowed and what is not?

And sometimes you unfortunately have to face reality. If all the houses in the development area have the same height or number of floors restrictions, it will be very unlikely that there will be deviations from that.

Good luck with that.

but because the money is not enough for more.

Yep, as long as I don’t build in the countryside, land prices starting at €250-300 per sqm are the main driver for the price of the finished house.
And I’m not talking about plots in metropolitan areas, which usually start at around €600.

If they approve that every time, then you can basically forget the development plan, because then everyone builds however they want.

Basically, you are right, but not in this case. The development plan is from 1974 and has already been amended six times in several partial areas. Planning law must also adapt to the signs of the times, only that the authorities do not have the capacity to implement meaningful changes.

And sometimes you unfortunately have to face reality.

You did not do that.

If all houses in the development area have the same height or number of floors restrictions

They do not, in fact. Only for the six plots located south of the cul-de-sac has one-story building been specified. In the rest of the planning area, which is over 30 hectares large, at least two floors are allowed. And even in the same building plot, exemptions have already been granted.

I am certainly no expert in the field

I do not understand the intention of your post.

I do not understand the intention of your post.

I am really sorry for you.

However, it really applies to me, what I keep noticing.

Please search on YouTube for "Ihr seid alle Individuen." That's how you come across to me a little. No matter how, the path has now been shown several times: hire a professional, submit a genuine preliminary building inquiry, wait for the result. Whether this will be overall cheaper than the few extra square meters of floor space, I'll leave open, because these activities also cost money.

Regarding the question of plot size: No matter what evidence you bring forward, it definitely doesn't depend on a few more or fewer square meters when you focus on the objective usability. The rest is psychology. Where I come from, they say: "Jede Doll is angig."

Let's please stay on topic.
I only mentioned it because there was an attempt to squeeze me into a "usual corset," which often doesn't fit me. By the way, if you keep hearing that from your circle of acquaintances, maybe that means something. But that's not the point here, so let's just leave it at that please.

To the actual topic: What really hurts me is the massively lost space.
If I have a 50 cm knee wall, then build a dwarf wall at about 1.20 m (although 1.50 m would probably be better with the low roof pitch, because at 1.20 m I still have 1.75 m until I reach an edge of 2 m), then easily 20 sqm of floor space is simply lost. And for that, I have to build the house accordingly bigger.
But it looks like I'll have to live with that. Well, if I reach the guy at the LRA tomorrow, maybe I'll be wiser.