Sealing of earth-contacting construction components on site

Hello everyone,

I am still studying the construction service descriptions from general contractors for our construction project.
In the construction service description from our preferred partner, I find the attached drawing in the technical description of the base slab.

It states there (highlighted in color by me) that the sealing of earth-contacting parts shall/must be carried out by the builder on site. Further down in the construction service description, I find the following section:

Depending on the type of landscaping work adjoining the facades of the house, it must be ensured under the responsibility of the builders that the earth-contacting surfaces of the facade are protected against ground moisture. The builder must coordinate these measures with their landscaping designer.

Silly question: Is that normal? I had assumed that this was part of the scope of "building the house." Must/can I have this carried out by the landscaper as part of the garden and landscaping work?

Thanks and best regards
SoL

Splash guard and bubble wrap are usually not part of the house but of the outdoor facilities. Any landscaper can certainly do that for you.

Yes, this is normal and should be done properly by the landscaper. Waterproof slurry and studded membrane.

The sealing slurry was done by the general contractor with us. But the garden landscaper has lower hourly wage rates. Possibly better to have them do it. Even better to bribe the bricklayers with 100,- so that they simply cooperate.

Thank you, learned something new again.
However, the sealing of the base above the terrain with sealing slurry is also done by the GU:

The horizontal masonry barrier at the base of the ground floor wall is done with sealing membrane G 200 DD. The vertical base sealing is done up to approximately 30 cm above the planned terrain surface using flexible sealing slurry.

I was probably a bit confused because of that...
Thanks again!