ᐅ Supporting a semi-detached house, 11 meters

Hello everyone,

I joined this forum to ask a few questions and hopefully find some answers 🙂

We are currently interested in a 300 m² (approximately 3,230 sq ft) plot in Baden-Württemberg. The plot will be developed with a semi-detached house, and the other semi-detached house is already built. The existing house does not have a basement. However, we are considering building a basement. A waterproof concrete structure („white tank“) is recommended in this development area.

What would it approximately cost to underpin or support the neighboring semi-detached house?

Thank you very much.

Good luck, Timo

Hello Timo,

schuckie schrieb:

We are currently interested in a 300 m² (3,229 sq ft) plot in Baden-Württemberg. The plot will be developed with a semi-detached house, and the other semi-detached house is already built. The existing one has no basement. However, we are considering building a basement. A waterproof concrete structure (commonly known as a "white tank") is recommended in this area.
What would it approximately cost us to underpin the other semi-detached house?

The exact cost can only be determined once the geotechnical report is available, as the structural engineer’s recommendation for underpinning the existing semi-detached house depends on it. Since execution according to DIN yxz (commonly referred to as a waterproof concrete structure) is already recommended, costs between roughly 10,000 and 15,000 euros are quite possible.

Best regards, Bauexperte