No more new houses in parts of Germany

Yep, and it’s coming elsewhere too. There will also be fines levied on living in climate unfriendly single family homes. The idea is to squeeze as many people as possible into cities and highrises?
Why?

Because the more removed from nature you are, the less self-sufficient you are. Meaning you are dependent on others for food, for heating, for water. You can’t get water from a nearby stream, and all water you collect or find in a city is poisonous. You can’t grow you own food, you can’t run your own solar on your roof for electricity. You cease being an autonomous human and instead become a pure consumer-slave.

This also plays into the destruction of the nuclear family. A family needs space. Eventually you will get on each other’s nerves. If you have a garden or space, you have ample opportunity and space to cool off. If you’re stuck in a tiny apartment, the tension will rise and families will divorce at higher rates. More destruction of the family.

Finally,  since people in cities are dependent on others, they tend to vote left wing. It’s also a lot easier to fake election results in cities.
Consequently, they want the vast majority of people moving into cities.

Where they cease to be people.

…the governing class generally, will never fail for lack of some modern phrase to cover their ancient predominance. The great lords will refuse the English peasant his three acres and a cow on advanced grounds, if they cannot refuse it longer on reactionary grounds. They will deny him the three acres on grounds of State Ownership. They will forbid him the cow on grounds of humanitarianism. — G.K. Chesterton What’s Wrong with the World

Even back when I was liberal, cities always seemed wrong to me. They seem so disconnected from the real world, and utterly fragile.  Like a plague or a riot can just brutalize a city, and if people stop going into it because of those things, they get real bad, real quick.  The rural area I’m in doesn’t even have good soil, and even in my Dad’s childhood, everyone was a net producer (though  poor as dirt) of something.  It would have taken forever to starve out my dad’s generation out here. It’d probably take a month for a modern city.