Steep slope property, please provide an assessment

Dear forum community,
I have been reading along for years and just yesterday and today read two nearly 50-page threads here about hillside construction.

Now I would like to ask for an assessment here.

In the Black Forest, I found a small hillside plot that received a building permit 10 years ago but was not realized, according to the seller, for private reasons.

Attached you can see the steep terrain and the original plan.

According to the seller, no soil survey is available.
However, the terrain section includes many height indications.

The plot is small. Basically OK.
Access from below. At the border, there is already about 2.6 meters of earth height on the plot.
So, a huge volume of earth would need to be moved/removed.
Additionally, due to the narrow plot, presumably high effort for securing the excavation pit etc...

My questions/considerations:

1. How is the additional effort due to the hillside situation generally viewed, even without a crystal ball and unfortunately so far without a soil survey?

2. Can a house for a family with 2 teenagers realistically be built here with a total cost of 450,000 euros excluding the land price? About 130 to 150 sqm, no frills. Square, practical, good?
The originally planned house already has too many frills and extras for me...

3. From your point of view, are there cost-wise feasible alternatives that require less excavation and hillside securing? For example, placing the house further up and then e.g. in front on stilts/supports?

4. Would you possibly discard the plot immediately due to too high effort/risk?

Many thanks in advance

Mike

Until proven otherwise, I strongly tend to "forget it" here. Without reason, such an implementation is not omitted – here I suspect efforts and restrictions that were not seen as proportional even for the planned "nice" house. It will not be any better for a simple roof over your head. You can forget the old permit, it is completely expired. Steep slope properties are only for fearless mountain goats willing to invest roughly as many suitcases full of money due to the terrain as one would for a villa with cream on flat ground.

We also build on slopes and I recommend you to keep your distance from this property. For €450,000 you can get a house according to your wishes in the flat countryside.
In the case you showed here, however, as you have correctly noticed, significant costs will come your way just for making the path accessible. The material has to somehow get up the slope. In addition, massive costs will arise either for slope stabilization in loose soil or for earthworks in solid soil. Furthermore, the outdoor facilities will become really expensive.
Why should it be exactly this property?

1. How is the additional effort due to the hillside situation viewed, even without a crystal ball and unfortunately so far without a soil survey?

Without a crystal ball no, 50% is not unrealistic

2. Is it realistically possible to build a house for a family with 2 teenagers here with total costs of 450,000 euros without purchasing the land?

No - not even with a very large equity share, because the expensive work is for professionals.

3. From your point of view, are there cost-effective alternatives that require less earthworks and slope stabilization?

One would have to be able to build on the slope instead of into it, which seems difficult due to the size of the plot.

4. Would you possibly immediately discard the plot due to too high effort/risk?

Yes, if the financial background allows for risk. We have realized such a project and could have easily gotten twice as much living space in the flatlands for the money like .

Warning from personal experience:
Our plot is on average very similar to yours but somewhat larger. Originally, it was three building plots and one forest plot which we now inhabit. Each of the building plots was between 720 and 900 sqm. They were marketed by an insolvency administrator of a previous developer, a real estate agency, and a local bank. For a 720 sqm plot half an hour by car from Cologne, they asked 39,000€ and did not sell it for 10 years. Reason: the exorbitantly high construction costs for a buyer. We then made an offer for the entire 1.5 hectares and reached an agreement. They were glad to finally get rid of the unsellable piece of land and we now had very nice neighbors who received us with a mix of curiosity and pity. In the end, we paid a few hundred thousand more than we originally planned. We wanted it that way and it worked out. We would do it that way again. With a tight budget and no reserves, it would have been a disaster.

Hello you two,

Thank you very much for the initial feedback.

Unfortunately, that confirms my gut feeling. Especially since three plots further on are also being offered as building sites with building permits but not realized.

In the end, I probably already know the clear answer to my questions.

This is not necessarily my dream plot. But after a search lasting three years, I have given up on that.

It could be a compromise between not being completely rural (doctors, schools, groceries in town) and initially affordable. However, that is then more than offset by the follow-up costs...

If it is not your dream property, definitely leave it. Ours was exactly our dream property and we enjoy a fantastic view every day while being 100% private. Otherwise, it would have been madness.