ᐅ Do costs increase with a taller knee wall?

Hello first of all.

I often ask myself the following question:
The cost of a house is often given in €/m² (per square meter), typically between 1000 and 2000 €/m². How does this relate to the height of the knee wall? It is often about 1 m (3.3 ft) high.

I figure that if I add another 1.30 m (4.3 ft) on top of that, the cost per square meter shouldn’t increase that much, since the entire “construction” like floor, ceiling, windows, sockets, heating, etc. remains the same; only the masonry increases by 1.30 m (4.3 ft) all around.

On the other hand, having a 2.30 m (7.5 ft) ceiling height on the first floor would significantly increase usable floor area.

Do you have any figures or arguments on this?

Best regards

Hi Haustom,
it all depends on the roof pitch. Our construction company charged €600 for each degree less in roof pitch. We chose a 32° roof pitch and have a knee wall of about 115cm (45 inches).

Regards
Lilik

We increased the height from 1 meter (3.3 feet) to 1.80 meters (5.9 feet), and it cost us €800. This was a prefabricated house with a timber frame construction. I thought it was affordable, and for €800 more, we got a lot more living space.

Lilik schrieb:
Our construction company charged 600€ for each degree less of roof pitch.

That sounds intense...

We would have had to pay nearly 4500 € for an additional 50cm (20 inches). However, more than 1 meter (3.3 feet) is not allowed. And it doesn't cause any problems.

DerBjoern schrieb:
Sounds intense...

Yes, I know. That’s why we stayed at 32°C (90°F). A knee wall height of 115cm (45 inches) is sufficient for us.

Best regards
Lilik