Costs of earthworks without basement

The surcharge for the WU basement would be 58,000 euros. Too expensive...

Hello everyone,

I am bringing this topic up again.
Today we received the offer for construction work from our construction company.
I would like your opinion. Is the price of about 19,000 reasonable?
At the end of the offer there is a note: "Die im Angebot angegebene Massen und Stunden sind überschlägig ermittelt. Die Abrechnung erfolgt nach örtlichem Aufmaß bzw. tatsächlichen Mengen und Stunden." What does that mean now? Could it become more expensive?

Oh, the basic dimensions of our house are 8.16 x 9.48m, a basement is also included.

Thank you in advance

Regards
Lilik

Can become much more expensive. The offer allows for substantial additional claims.

Small update: So, the ancillary construction costs are a topic of their own. For us, a soil replacement was actually planned. However, after the excavator driver said the soil is load-bearing (he apparently drove over it with his excavator and nothing settled), we didn’t need the soil replacement after all. Our construction consultant had planned 18,000 euros. With the soil replacement, it became 32,000 euros. I thought it would get cheaper, but the first invoice was almost 26,000 euros. Now the cistern is still missing, as well as additional gravel and the distribution of topsoil on the property. With soil replacement, it would have really been intense. Long story short: I think the costs for the groundworks are only clear once they’ve been done.