Cost estimation for house construction

Good morning,

Just roughly calculated:

380,000 € - 100,000 € (land) - 40,000 € (incidental construction costs) = 240,000 €
240,000 € / 1,500 € (taken as an assumed benchmark for costs per sqm) = 160 sqm living space
That should fit. But this calculation is really only meant as a very rough guideline.

This model is flawed; better to calculate like this:

Land: TEUR 100
Incidental construction costs: TEUR 40
Painting work and floor coverings in EL: TEUR 20
Outdoor facilities in EL: TEUR 10 (just the essentials)
Reserves for extras: TEUR 10

All in all TEUR 180 - TEUR 380 = TEUR 200 remain for the pure house construction

Even if the TE still has reserves on hand, the costs of the single-family house should not exceed this value. It may still happen that unexpected costs arise due to, for example, additional foundation costs, which are not covered by my buffer in the incidental construction costs. That sometimes happens faster than offspring are employed ;)

1,500 € per sqm, does that apply to a semi-detached house, townhouse, or single-family house? The background is that I want to approach various builders soon. However, I wanted to get a feeling beforehand whether our budget is even realistic. Before I start and get a weary smile.

It is the assumed value per square meter and is representative of a single-family house, to be considered as built to KFW 70 efficiency house standard. It makes no difference whether it is a detached single-family house, a townhouse, or a semi-detached house.

We actually live in the Rhein-Neckar district and here it is, well, quite expensive.

I don’t see where the land prices you mentioned are supposed to be expensive. There are plenty of other examples where you have to take double or more as a basis.

I’ll briefly summarize our wishes:

[*]Single-family house or semi-detached house about 140 sqm with 5-6 rooms
[*]Optional basement, of course that would be nice, alternatively garage with pitched roof
[*]Small plot is totally fine, we’ll design the outdoor area ourselves
[*]Equipment should be normal, only one fireplace is desired

You will have to say goodbye to that; the basement for sure. A realistic budget for a single-family house of the size mentioned on a slab foundation including land and all incidental costs is TEUR 450.

Rhenish greetings

Thanks construction expert! That is helpful to know. Would a semi-detached house with 140sqm and about 5-6 rooms on a slab or with a basement be feasible? What can you get for TEUR 200 in the Rhein-Neckar district? Can you estimate that?

You're right about the plots of land, with TEUR 100 you really have to search. If you want to spend TEUR 150 for the plot, it’s somewhat easier.

Best regards!

Hello,

Would a semi-detached house with 140sqm and about 5-6 rooms on a slab or with a basement be feasible?

No - including slab maybe just barely, if the architecture is otherwise simple. You can forget the basement in all your scenarios. By the way, with a semi-detached house you only "save" the costs of insulating the party wall; that's about it.

What do you get for 200k EUR in the Rhein-Neckar district? Can you estimate that?

For a house you will enjoy for a long time? I would estimate around 135 sqm on a slab. Of course, there are bargain hunters who accuse me of nonsense :D

Rhenish greetings

Hello!

Thank you for the tips and the honest assessment. What exactly makes a house that one enjoys for a long time? Is it a big disadvantage not to build with Styrofoam insulation, that is, not KfW70?

Best regards!

One enjoys a house for a long time, as long as one can always pay it off and maintain it :-)

Thank you very much for this helpful input. ;-)

What Bauexperte means is a "solid" house – one that does not require the first renovations after just one year. It is always possible to build cheaper, but this inevitably affects durability – and a house that is ready for demolition after ten years simply does not bring long-lasting joy. ;-)

By the way, I would not see it as a disadvantage not to install separate insulation (WDVS), except that it is usually more expensive.