No building plot can be found in the southern part of Schleswig-Holstein

Is there a new development area? We would not be opposed either. Because you mention interested parties, I assume everything is already sold out. May I discreetly ask for the price per square meter for orientation and comparison?

It is an existing property built in 2012 for €480,000 on 1170 sqm of land.

I have to admit that recently I haven't checked any new development areas because NOTHING ever happened in the past. I used to browse the cities' homepages twice a week and eventually gave up.

You don't need to do that every two weeks either. Pure waste of time. Register as a building interested party with the municipalities that interest you, that way you will also stay up-to-date. We regularly received emails from the building authority this way about the current status in urban land-use planning and when the development or marketing is expected to start. However, this is handled differently in every municipality. Just call and ask.

I would simply save searches additionally in the portals - then you receive emails about new properties. There is a risk of missing something if you only follow the market casually and not meticulously.

Honestly, I don’t.
I find a lot of it somewhat disparaging and black-and-white, which is not true at all.

Oh my God, something went wrong here.
I definitely did not want to offend the beautiful villages.
And at no time did I demean them. If I did, please show me where.
I only wrote that I do NOT WANT to go there.
Am I not allowed to not want something?

Enter Norderstedt with a radius of 25 km in a portal with built-from-2000 onward and show me the shacks!

The shacks probably triggered you. Sorry. Either I wrote badly, or you read too fast.
Yes, everything is shacks in my understanding, BUT not within the 25 km radius, BUT in the cities mentioned in the original post.
I left out the villages within the 25 km radius, and I didn’t see any shacks there because I didn’t look.

And with €60,000 in savings, you just can’t pretend that everything should now be handed to you on a silver platter.

Please let the money topic be.

I would set myself a few minimal criteria - how many sqm of living space MINIMUM. And the financial pain threshold minus 150,000 for a renovation. How much garden. Year of construction, basement, garage, number of floors, etc. I would initially ignore. And then do a very generous radius search. A good architect can make a modern dwelling out of almost any house, which then is not run-of-the-mill but can even be individually more suitable than a prefabricated house. Just look in [AD] and in the [FAZ] real estate section for building in existing stock or renovation, to get an idea of the possibilities of "junk". There are quite a few gems among existing properties.

Am I not allowed to not want something?

Of course. But then don't complain or stay happy with the rental apartment. Sorry, but you are not the only one who finds the real estate market upsetting. However, you do well in life if you adapt your wishes to your possibilities.