Cost estimates from two architects differ greatly!

@Bauexperte, is a gable roof.

Hello,

His planned house is 12x10m in size with a finished basement and a finished upper floor. The planning architect prepared a cost estimate of €340,000. The planning architect is from Stuttgart and the construction takes place in a rural area near Ravensburg (BW). As far as I know, it is a rectangular house without a bay window or similar frills. The basement is designated as a living basement.

How do the TEUR 340 add up?

With the few data I have, I would say that a reasonable cost estimate would probably consist roughly as follows:

Single-family house 12 x 10, plaster construction and KfW 70: TEUR 280
Additional costs completely turnkey finish attic: TEUR 25
Living basement: TEUR 70 (without consideration of possible hillside location)
Painting work in EL: TEUR 15
Floor coverings in EL: TEUR 15
Outdoor facilities in EL: TEUR 10
Additional construction costs: TEUR 35-40
Reserve for extras: TEUR 10
Finished garage 3 x 6: TEUR 5

All in estimated investment up to here: TEUR 470,000.00

What I forgot to mention. My friend demanded a cost calculation from both architects.
The planning architect has not yet complied with this request. The second architect delivered this with an amount of €562,000.

There must be a comprehensible reason why the accompanying architect is so far above my cost estimate; as a rule, it is exactly the opposite. It would therefore certainly be better if your friend registers here and provides exact details about the construction project.

Rhenish regards

How can this difference of over 60% come about?
I don't know...!
Something like this can only happen if one person includes the land purchase and the other doesn't :D

However, I don't understand why someone would build their house 12m x 10m. That's 240 sqm with 2 floors!!!
If you ever move... no one will buy that thing anymore! With the rising heating costs per sqm of living space, I would seriously consider whether maybe 4 rooms instead of 8 in the house would do.

Well, everyone has to decide for themselves... Just calculate the individual trades yourself, or go to a house construction company and get a comparative offer.

Hello, I spoke with my friend. He does not want his problem to be on the Internet. Can someone delete the posts? Unfortunately, I cannot edit :(

:D

However, I don't understand why someone would build their house 12m x 10m. With 2 floors, that's 240 sqm!!!
If you ever move... nobody will buy that thing anymore! With rising heating costs per sqm of living space, I would think three times about whether maybe only 4 instead of 8 rooms in the house would do as well.

Well, everyone has to know for themselves...

Sometimes there are good reasons for such a house. In our case, we have three children and need an office for home office. There, 250 sqm of living space or 300 sqm total area is almost too small – we also don't have a basement and prefer to use a room in the attic as a basement substitute. Besides, for us the house is not an investment – we want to live well now and not think about what will happen in 20 years.