Access XXL, an unusual project

Hello,

In our area, it is very difficult to find an affordable plot of land. Now we have become aware of one that is somewhat special, but quite large.
So far, it is a large plot of about 1400 sqm.
It is to be divided, and two detached single-family houses will be built on it.
Since the location is special, an access road must be constructed (see simulation, instead of the row houses, two individual houses will be built).
The plot must be built with a specific general contractor.
They have apparently already obtained a cost estimate for this, also for the demolition of the existing property.
The access road will belong to both parties, and the costs for it will be shared between the two.

The costs were listed by the general contractor in an initial sample calculation as follows:

External development costs €30,000
Demolition work €22,500
Deep foundation/foundation elevation €10,000
Removal of excavation material and filling €10,000

Do you think this could roughly be correct for this project? However, the costs mentioned above also include the "normal" ancillary building costs for the single-family house. There was no separation between the driveway and the house.

Are the estimated costs realistic?

Do you see any other risks with this approach? I am thinking, for example, what if the other party no longer pays the other half? Then we couldn't continue...

Anyway, an unusual project and I look forward to your assessments!

Best regards

The costs are more realistic per party.

With the difficult profile including [Winkelstützen], asphalt, and embankment...

Hello Osnabrückers,
I forgot to mention that they are of course listed per party, but some of them are also for the development / for the foundation of the house.

Best regards

I don't see anything special there now. Plot division and access road, just what is done constantly and everywhere nowadays.

I don't see anything special here. Lot division and access road, just what is done constantly and everywhere nowadays.

That gives me a good feeling! I haven't seen it in this form before, but I'm not experienced either.

Hello Osnabrücker,
I forgot to mention that these are naturally listed per party, but some of them are also for the development / for the foundation of the house.

Regards

On the contrary, you said above that the costs are shared between the parties.

Finding a plot is difficult, I understand that. But being tied to a general contractor does not appeal to me (among other things because of the additional property transfer tax which, in my amateur opinion, then also applies to the house). And spending €70,000 before the first stone is laid seems expensive to me.... But maybe the plot is correspondingly cheap.

Does the general contractor make the mentioned prices fixed? Otherwise, the costs for the earthworks will certainly multiply.