Crane swing area in a very densely built-up residential area

I'm keeping my fingers crossed for all of you. Such people often just want to be respected and asked. If you are nice and apologize, that can already help a lot. I'm keeping my fingers crossed that this can be resolved that way. That would also be desirable for the reason that you want to live next to each other for several more years.

We had a similar issue already two years ago: (and I think there was another one as well, but I can’t find it right now or it was even in the Green section).

Three weeks ago we distributed notices on the street that the street at the height of our property would be fully closed for construction work. We did not mention that the crane was responsible for this. Only that the street would be closed. The crane has been on the street since yesterday. So far, no loads have been moved with it. Today we received a call from a neighbor saying that this was not announced and he does not allow swinging over his property. The crane turns in the wind (it has to, right?!) and of course moves over all the houses. It is a very densely built and tight residential area.

The development density of the area didn’t just arise recently; you should have looked into alternatives to the popular tower crane. Leaving the neighbors to deal with this is not acceptable in my opinion (although I don’t exclude that your federal state’s neighbor law might rate luck higher than reason). If it were me, you would have lost my trust forever for this cunning omission of the crux of the matter. Diplomacy works differently. Besides, it’s not the wind turning the crane, but a motor; and it doesn’t have to swing over all the houses either. The duty of care to "plan" the swinging movements lies primarily with the builders, in addition to the crane operator. A permit for closing the street is not a general amnesty and does not automatically include the neighbor’s permission to swing over their property — you should have obtained that yourself from the neighbor (mind you, your state law might be more lenient towards the little Smurfs). If no other neighbor has objections, you can probably plan for longer crane swings to avoid swinging over his property. The neighbor’s concerns are not unfounded, and honestly, sometimes I don’t understand how naive some people are about not caring for the safety of their neighbors. I wouldn’t worry about “tickets” for that at all. The friends and helpers (police) will come, and if the crane operator is not reasonable after the talk, he can receive a ban from the area. What does your safety coordinator say?

The crane turns in the wind (it has to, right?!) and of course moves over all the houses.

Whereas loads over his (crane) certainly must not.

By the way, it’s not the wind turning the crane, but a motor.

What is there to doubt now? Wind-free should be clear?

With me, you would have been doomed forever for the sly omission of the crux of the matter.

Really now?
Where do you read anything about sly omission?
Pretty thin-skinned for your kind.

By the way, one can be right and still behave cooperatively.
Then one is not only well informed, but also a pleasant companion.

There was nothing deceitful, according to the OP he did not knowingly withhold it but only learned late about the necessity to communicate it, see:

Unfortunately, I only found out about the swinging over properties today, after the call, after googling...
I know ignorance is no excuse, but recently there has really been a lot we had to think about, we distributed the papers and believed everyone was informed.

There is also a difference between intending to swing ton-heavy concrete parts over someone’s house or just brushing the airspace of the property at one corner. Without further info, we really can’t know that here.

But what is he supposed to do if there is no other way? The reason why the laws allow this in the absence of other options is probably that otherwise construction could not proceed.
Although my second approach—after the renewed effort to talk with the neighbor—would also be to inform the construction company that the neighbor does not tolerate the swinging over. Maybe there is an alternative after all.

By the way, it is not the wind that turns the crane, but a motor; and it does not have to swing over all the houses either.

Uh, yes it does.
When the crane is not in operation (evenings, nights, weekends), it is set to be wind-free. That means the wind alone decides how the crane turns, and you can't exclude the neighbors from that, even if you wanted to.
The OP has already excluded loads over the neighbor's property.

Loads over his property under no circumstances.

But even then, he would have to agree if there is no other way or only with unreasonable effort.
This has nothing to do with

Your state law may see this more favorably for Smurfs

but with the fact that there is neighbor law in every federal state. It regulates not only what you are not allowed to do and what you must consider if you want to do something, but also what you as a neighbor have to tolerate and where you may possibly have to be compensated for it.

The crane must be able to turn into the wind. Otherwise, it will end up in the neighbor’s garden or on their roof during the next storm. A few years ago, we had a case like that in Konstanz, where the crane took down the railway line.