Cost per construction cubic meter: rule of thumb?

2016-09-17 21:54:47

Why should one even calculate with enclosed volume? That can only be less accurate than calculating with area. With enclosed volume, the variable of room height is added, so to speak. However, the total construction costs scale much more with the area than with the volume, especially when, for example, bathroom fittings are included. Construction costs per cubic unit might make sense for shell construction costs. Consequently, the figures are not correct, at least for our construction project. According to this, our new building would have to cost over 600,000, although I have now also included the attic in the total volume.

2016-09-18 09:12:42

Thank you all for the feedback. That sounds good^^ It's not like we wouldn't have been able to afford it anymore, but one or the other treat might have had to be left out, which would have annoyed me a bit

2016-09-18 13:59:26

If you don't like saving or want to show little self-discipline, then rather calculate with 450 euros per sqm. At least, that is what our experience has shown. By the way, I would prefer the cubic meter calculation over the sqm calculation, especially because the ceiling height is included.

2016-09-18 18:21:58

By the way, I would prefer the cubic meter calculation over the square meter calculation, precisely because the ceiling height is included.

That doesn't make logical sense, because the costs for additional room height are less relevant to the total construction costs than area-related costs such as installations, floor coverings, bathroom fittings.

2016-09-19 08:55:39

Hello everyone,

As part of my research on construction costs, I have now also learned about another rule of thumb, regarding its validity and amount I would like to ask for your assessments or your own experience values.

Specifically, it concerns the built VOLUME, not the built-up area, divided by floors.

For example
Basement approx. 400€/m³ built volume (from bottom edge of the floor slab to bottom edge of the ceiling)
Ground floor approx. 700€/m³ built volume (from bottom edge of the floor to bottom edge of the ceiling)
Upper floor approx. 400€/m³ built volume (from bottom edge of the floor to bottom edge of the ceiling)
Always the outer boundaries, so including walls. The values do not vary because of the actual construction costs, but because the entire equipment is included.

For the whole house, you would come to an average of about 600€/m³ built volume. This value still varies depending on equipment from 480-700€/m³

Except for notary, property transfer tax, and kitchen equipment, everything is included, i.e. also high-quality bathroom, architect, incidental construction costs, excavation + removal, connections, exterior facilities, etc., so "real" turnkey.
At 600€/m³, the equipment would be of slightly upscale type, i.e. underfloor heating with air heat pump, natural stone floors, and the like.

Now of course I am interested in your opinions and experiences.
How does this formula compare to your experiences?
Possibly also already built buildings calculated with this formula in comparison?

Many thanks in advance and best regards,

Marc

Indeed, banks apparently calculate more with the cubic volume than with the built volume.
I don’t know which value banks use today, but 600.- € is definitely too high.
With this rate, it would hardly be possible to build a house for under half a million.
In 2012, our bank calculated with, I believe, about 300.- €, averaged from the basement to under the roof.

2016-09-19 09:01:22

That doesn't make logical sense because the costs for additional ceiling height are less relevant to the total construction costs than rather area-related costs such as installations, flooring, bathroom fittings.

In both calculations, you cannot speak of an exact calculation. Especially because the ceiling height is included in the volume, it should be more accurate; the additional walls, insulation, exterior plaster, interior plaster, etc. are completely neglected in the area calculation. Then I build 100m² with a 3m ceiling height and wonder why I don't manage with 1600.-€, even though I haven't really installed any luxury...

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Cost per construction cubic meter: rule of thumb?

Knallkörper

EinMarc

merlin83

Knallkörper

Peanuts74

Peanuts74