Precautions: Hurricane "Sabine" / Storm "Ciara"

Jerk to a lamppost or similar and tie up there.

Karsten, first there would have to be a lamppost... at most tie it to the scaffold...

Put as much heavy stuff as possible on the door to increase the weight. If you have something on site to put in. Secure/lock the door with something. Otherwise, I can't think of anything else?

But let's take the game further: who is liable if the thing gets out of control and damages something in the neighborhood?

GU & developer if the house has not yet been handed over. Because it is in their scope of services and thus insured through them?

Or the builder or builder's liability insurance?

I have already read that this is probably covered by the builder's liability insurance...

Had already thought about putting stones there.... Although, I still have some leftover roof tiles next to the front door... put those in there....?!
Recently, in the construction area, during somewhat stronger wind, two little houses just had to tip over....

How tight are the Dixis when they lie on their side? Do they have something like a check valve or similar?

Dixis are not tight at all. If they lie on their side, all the slop leaks out ^^

If it just lies down, I wouldn't care. You can stand it back up and spray it off with the water hose.