Site planning on a gentle slope with filling

The building application has been submitted. In my opinion, hardly any changes to the floor plan make sense anymore. But strictly necessary. The height was at least not specified in that section.

The heights were only cut off because otherwise I wouldn't have been able to get the entire height profile of the property into the picture, I attached them again. By the way, the building permit arrived today! :)

the 450 m3 of excavation, 350 m3 of excavation to be disposed of additionally, and building with a basement in contact with the ground? Who would want to do that unnecessarily? Furthermore, the desire for single-story living can hardly be taken into account.

I stick to my design from post #24 as the cost optimum. I hope for the original poster that the height was not fixed anywhere in the plan. With that view, the basement is not an option for me.

OK then have fun building. I would reconsider the option to significantly simplify the property and save another tens of thousands. You are getting a much larger area in the southeast that is then level with the house.

OK then have fun building. I would reconsider the option to make the plot significantly simpler and save another tens of thousands. You get a much larger area in the southeast which is then level with the house.

The terraced grading is not excluded in the building permit, I would try to reduce the starting height of the house by a few centimeters and also a little less fill. Part of the fill around the house can also be refilled with the excavation.

I will report here what unforeseen things happen or how good the calculation was :D

I definitely wanted to avoid using sandbags.

In Cuba, we always wondered why the curbs are so high, 20-30cm.
After the first heavy rain, we understood—it’s the channel for water drainage.
Whoever builds the lowest gets water from the street, cross street, neighbors, and everywhere.
Plan the above-ground water flow,
we had to do that too.
With us, the water runs 10cm deep along the street.

The frost protection gravel comes at a friendly price, I don’t have the exact amount yet, but I’m calculating 20€/ton including freight. I would have estimated 700 tons for my design, which is probably too much.

14,000€ for gravel. Or 14% of the basement. Installation is additional and for that you will definitely need bigger equipment ;) I just did the math for our place and we also have 5.5% diagonal across the entire property. You can build without a basement there, even though we initially assumed a significantly lower slope (the survey came only after we already had the contract and financing...). But that is not quite trivial then. For a real hillside house, that is a bit too little again. The sweet spot for the slope would probably be a daylight room in the basement, e.g. an office or hobby room, which can then be realized without a light well