Offer single-family house, 2 full floors, basement + 1 floor, what do you think?

You mean the 10-30 cm topsoil? Of course you can do that. What about the rest? I think you have no idea how over 1000cbm of soil excavation really feels.

Example:
- Slope over 34m of 3.5m + 25cm basement floor slab
- Width 26m
= (3.5+0.25)/2*34*26 (with uniform slope, if it drops 3.5m directly over 2m then you got lucky)
If you now assume that you want a level surface from the terrace to the end of the property, you’re at 1657cbm soil excavation (not loose soil excavation, there’s a factor of 1.3 added for transport since excavated soil has more volume).

For simplicity, you would slope outward a bit to have less excavation (estimated minus 200-300cbm).

1300cbm *1.3 =1690cbm

If the soil analysis sample contained no roots or tile fragments, gravel particles, etc., then transport and disposal here would cost you 44k€. If there was a root in the sample (organic material), then good night.

I’m currently experiencing this problem myself because a hillside property with a high terrace is planned.

160sqm*1900 = 304,000€
Basement + cellar under garage: 80k€
Additional construction costs (+extra earthworks): 70k€
Double garage: 30k€
=484,000 €

your offer 412,000€ => take it :D xD

(I just don’t think it’s that "cheap," because the numbers above are already more on the lower end)

And the question was 90% about the offer, not "how much do the earthworks cost"?

best regards

The offer is missing quite a few things, including the complete drainage system with a sewage-capable lifting station. The tiles are insufficiently measured, etc. A lot will still be coming your way. Things you don’t yet know.

The planning with the equipment looks more like 500k€ plus x€, since the bathrooms will cost you far more than the offer suggests. If the general contractor plans with 25€ per sqm of tiles, then I can already imagine what the sanitary equipment in the offer looks like. You won’t want that.

160sqm*1900 = 304,000€ Basement + Garage basement: 80k€

And with that, the basement is then calculated twice...

And with that, the basement is calculated twice...

You are right. But I still believe it will cost about €470k, mainly due to the earthworks. It's a pity that hardly anyone updates their old threads and says, "Well, the house is built and it actually cost xy€." That would always be very interesting :D

You will not need the amount of excavated soil. That little topsoil does not matter. For the rest, the question is whether you even want it. With us, there would be more stones than soil in it. Friends had taken the trouble to select the nicest stones for a natural stone wall; you wouldn’t even have noticed with their 20 truckloads full of excavation.

I also find the cost calculation a bit tight. Regarding the floor plan, I don’t like the guest room or the location of the children’s room. The children’s room is quite dark. Maybe swap the bathroom and the children’s room.

Have you ever considered planning the living space downstairs towards the garden and the bedrooms upstairs?