Construction ancillary costs - Builders often miscalculate

Dear forum,

I have the feeling that many people underestimate the additional construction costs. My boyfriend has already made this list. The earthworks are so expensive because of quite a steep slope. The terrace is initially optional. What other applications, construction electricity, etc. approximately come up for us?

House 148 sqm €220,000
Garage €12,000
opt. terrace €20,000
Plot of land €46,968
Land transfer tax €2,818
Notary €705
Earthworks €37,500
Connections €12,500
Kitchen €7,000
Flooring €4,000
Wallpapering €4,000
Garden €10,000
TOTAL €377,491

Thank you very much!

Then you should take a look here at what all [Baunebenkosten] includes

Regards Yvonne

Great, thank you very much!