Should the land be filled up or not?

I have now written an email to the main contractor, on the basis of which we can then have a phone call. I don't want to catch him off guard; he should be able to prepare and possibly already present some proposed solutions.

Thanks for your effort!

I will give feedback as soon as I have any concrete news on this!

Best regards

and my question is, do you really have to use 1.50m for that?

Short answer: yes. Counter-question: what do you actually think is the origin of my statement that basement avoidance effort is basically not cheaper than basement construction effort? (among other things from the prices of - and land requirements for - L-stones and the like). The general rule, that with two meters height difference in the building window the two methods are economically equivalent and that this applies proportionally on the way there, ultimately comes from practice and not from Confucian fortune cookies ;-)

The difference in height is not the issue. It is actually only about 1 meter in the area of the house. But the street is probably somewhat excavated on the hillside side.

Question to the OP: is it allowed to build retaining walls for the street on the boundary?

Short answer: yes. Counter-question: it finally comes from practice and not from Confucian fortune cookies ;-)

Thank you! I really appreciate your expertise :D

The height difference is not the issue. It is actually only 1 m in the area of the house. But the street is probably somewhat dug in on the hillside side.

Question to the OP: is it allowed to build retaining walls at the street boundary?

According to my understanding and the explanation of the general contractor at the beginning:

If you keep a 3m distance to the neighbor’s boundary, the height difference in the area where the house is placed is “only” about 70 cm. I was told that with a height difference of 70 cm over about 11 m, no basement would be necessary.

All neighboring houses to the west (i.e., uphill on the street) have retaining walls towards the street, and we would have to have them too. The direction to the east (i.e., downhill towards the street) has their terrain completely at street level (these are 2 houses and soon a daycare center on the opposite side).

I really appreciate your expertise

How does it come about then (if I understood correctly) that you suddenly want to shift a basically finished planned house by one and a half meters in order to quickly fit in an inserted terrain modeling?

How does the situation arise then (if I understood correctly) that you want to suddenly shift a basically fully planned house by one and a half meters to quickly accommodate an inserted terrain modeling in between?

I myself do not want to change anything. Until yesterday, my world was still fine.

Yesterday, I received a call from an employee of the general contractor asking me to look at the new site plan; they were informing me that due to the property, the change had occurred that the house will now have a distance of 5 meters to the neighboring property instead of the previous 3.5 meters. Because the terrain needs to be supported, this change was necessary.

I first "accepted" it and asked what could be done now. The employee on the phone told me that unfortunately nothing could be changed about it.

And that is why I asked again here. I want to get in touch with the general contractor to tell him that from my point of view there are these and those possibilities (which I am taking along thanks to the collective wisdom here) or if he has alternatives to prevent/reduce the problem.