Assessment of land - hillside location

Good evening everyone,

we have recently been considering a plot of land that would be perfect for us in terms of location and on which we would like to build a single-family house. The slope of the land gives me a bit of a headache, as I, unfortunately, cannot assess it at all as a layperson.

We have roughly planned the following budget:

Plot (750 sqm): approx. 55,000-70,000 EUR including additional costs (still needs to be negotiated)
House (approx. 150 sqm) gable roof (turnkey, including painting and flooring): approx. 320,000 EUR
Additional construction costs: approx. 55,000-70,000 EUR (of which earthworks approx. 20,000 EUR without foundation slab)
Outdoor facilities: approx. 15,000 EUR

Total volume: approx. 445,000-475,000 EUR

A garage is not planned, carport optional if there is still budget available.

Basically, we would like to build without a basement; it would still be possible for the lower floor to be partially in the slope. However, since I really cannot assess the plot at all and it depends on whether a basement/lower floor in the slope/just a foundation slab is necessary, I would like to have a few assessments.

Attached are the floor plan including contour lines (red) as well as a few pictures that I took. It concerns plot 1468. A soil survey has not yet been conducted but would of course be done if it becomes concrete. At first, I am really only interested in a rough assessment of what would be feasible at reasonable costs and what makes no sense at all.

Thank you in advance for your assessments.

A little headache

A plan helps against headaches: [ATTACH alt="Lageplan.png" type="full"]46422[/ATTACH]

absolutely not assessable

A 2m height difference within the house footprint suggests a basement. To the left, right, beside you, behind you, in front of you you can already see it ... all with half-buried cellars, or better with a lower ground floor.

as well as a few pictures

Pictures without a spirit level are more confusing than helpful. Here is picture 1 after rough leveling: [ATTACH alt="IMG_3889_gerade.png" type="full"]46423[/ATTACH] The slope location is more clearly visible; in the end local height measurements are needed because the neighbors have apparently done a lot of landscaping.

Wow, , how you always find the right plans really impresses me a lot!

Wow, thank you very much!

I already suspected that the most likely solution involves a basement or residential cellar.

Would this solution fit within the budget? Unfortunately, I really can't assess that either. My estimated costs are based on a house with a slab foundation.

Thanks for your help!

What definitely does not fit in the budget are the costs of the outdoor facilities. 15k is not even enough for a flat plot of land if done by yourself. Possibly (with flat ground) if you do everything yourself and hold back a lot on the equipment.

For the outdoor facilities, I would at least calculate 40k including your own labor (ideally, I would advise you to budget 60k for the garden, but then you will probably think I'm crazy).

By the way, we have such a property. A little more difference in height in the building window and a bit more square meters. We are already working on some of the outdoor facilities, and for other things (that will only come next spring) I have quotes.
Outdoor facilities are really expensive and simply crazy on a slope.

Earthworks are probably not enough either. At least with us, you won't get far with that.

What is included in the [Baunebenkosten]