Project Homeownership - Basement, Ground Floor Plan - Tips

Otherwise 11ant is right, and I think that for you it is no longer a gentle slope, but a steep slope.

I already wrote this: "with a height difference (considering the depth of the house)".

If the height difference between the uphill side and the downhill side of the house amounts to "a basement," then you might as well build it completely, i.e. use the elevation on the downhill side as living space. Roughly estimated, for every 20 cm of "wall height" in this substructure, about ten more percent of the basement cost is added, hence the rule of thumb to calculate 100% basement cost from 2 m height difference (and proportionally less below that).

Of course, more a farmer's rule than precise measurement

How a basement should be executed should be stated in the soil report. In ours it was, ultimately - here clay soil - the geologist advised against it. Not explicitly, but those who can read will understand it. Otherwise 11ant is right, and I think that for you this is no longer a slight slope but a steep slope. Almost 2m on the short property length of just over 20....

The final "steep slope" is not from me, and I don't see it there either: 1.80 m over 22 m is just under 8% / 5° slope. If it is reasonably linear, a height difference of more than one meter only occurs at a house depth of more than 12.20 m. At 11 m house depth, 90 cm, on the uphill side 30 cm "dug in" makes 60 cm base on the valley side, which does not yet amount to "dyke or basement".

a soil survey only exists for the entire residential area, but not directly for the plot.