New construction - prefab house vs. solid house, is our dream home achievable?

It should be 180-200 sqm without a basement

Total living area or floor area?

180-200 sqm living area should easily be possible for this price.. especially if you even forego a basement.. does that have any special reasons by the way? Usually people skip the basement to save some money but with a budget of 450,000 that shouldn’t have been the reason.. right?

if you generously calculate an extra 50k for KNX and the upgrade to a geothermal heat pump, 40,000 incidental costs and another 40,000 for the garage, 20,000 for the outdoor facilities, then there are still 300,000 left for the house...

No idea why that wouldn’t be enough...

just to clarify: You already have the plot of land or it is not supposed to be purchased with these 450,000?

If you choose the right prefab house provider, the houses last just as long as solid houses with proper maintenance.

And in the end, nobody wants to live in such an old dump in 60 years anyway...

With prefab houses, you definitely have to pay attention to the wall construction. In my opinion, solid wood panels must be used there. The cheap providers often only use gypsum boards.

For us, only a prefab house was an option: We both work and don't have time to constantly hang around the construction site. With the prefab house, you take a week off, watch, and immediately see the defects. Then after the screed drying, another week, and you can move in.

Good evening!

Thank you very much for your assessments - I am a bit wiser now. Although the opinions of Shism and Bauexperte do differ a bit.

@Shism: Living space was already correct and yes, the plot is not to be paid from the 450,000 euros. Why no cellar? I think we just want as little space as possible for any odds and ends that you don't really need anyway.

Best regards,
Unsertraumhaus

Good evening as well,

Whereas the opinions of Shism and Bauexperte do differ a bit.

This is probably because Shism is a potential/current or future builder, and I have been able to gain experience in the field of new single-family house construction for 16 years

Kind regards

Thank you very much for your assessments – that already makes me a bit wiser. Although the opinions of Shism and Bauexperte do differ a bit.

This is probably because Shism is a potential/current or future builder, while I have been able to gain experience in new single-family house construction for 16 years.

Bauexperte is certainly right there! In case of doubt, she has more experience than I do.

However, I am somewhat surprised..

Up to this point and assuming you don’t want to build a cube, you have to reckon with €370,000 for the completely move-in ready house, with solid construction.

What costs do you assume for the garage, Bauexperte? 40-50k? Then that would still be 320,000-330,000 for a house without a basement and without heat pump/electrics (you have listed those separately with 40k) without exterior work and without ancillary costs..

That makes about 180 €/m²... considering that a lot is still missing, quite a proud price per m²...
If I include 35k ancillary costs and the 40k bus/heat pump, I end up at 2250 €/m² for the house without garage and exterior work..
I would have guessed you’d get cheaper if you don’t have high-class demands or don’t want an extraordinary architecture...

What do you see here as the main price driver, Bauexperte?

Hello,

What costs do you estimate for the garage, construction expert? 40-50k?

No, if the double garage is built with masonry and is to have a flat roof, at least EUR 25,000 (without sectional door) must be budgeted.

then that would still be 320,000-330,000 for a house without a basement

"Our dream house" says: "The equipment should not be high-class, but still upscale" - then I cannot budget below €1,700.00 to €1,800.00/sqm/living area (house). And - when I mention prices, groundwork (under normal soil conditions), access, terrace as well as painting and flooring are always included in the mentioned price. Turn the key and move in.

and without heat pump/electrics (which you separately stated with 40k) without outdoor facilities and without ancillary costs... makes about 180 €/sqm for 180sqm... considering quite a bit is still missing, a proud price per sqm...

I based it on 200 sqm real living area.

If I include the 35k ancillary costs and the 40k bus/heat pump, I end up at €2,250/sqm for the house without garage...

I included the double garage in the price indication.

I would have guessed you could get cheaper if you don’t have high-class demands or don’t want extravagant architecture...

"Our dream house" does not want simple equipment and for the architecture I only considered a gable roof; a cube or even a staggered storey would require quite some extra euros.

What do you see as the main cost driver here, construction expert?

You must not forget that we are talking about 200 sqm pure living area here, upscale equipment and calculated so that you can move in directly.

Most builders - how should they know otherwise - are under the mistaken assumption that a piece of house including all equipment features, extras and construction ancillary costs (which strictly speaking must not be included in the price per sqm for the house) must not cost more than €1,300.00. That doesn’t work; I hardly know a house - with quite normal equipment - that, when all costs are added up, is under €1,700.00/sqm.

The architect gets paid, the structural engineer, the building supervisor, the state, the notary, the bank, the civil engineer, the paver, the seller, etc. The building supervisor, for example, has a responsibility both to his client and his employees; so he has to calculate in such a way that he can still stand on economically sound feet next year. This continues through all trades so that a serious offer ultimately results in the fixed price.

There is no cost driver in the classic sense, unless the client has extravagant wishes - for example a special series of sockets. I have one at the moment; the sockets come from Belgium and cost €400 each. Or ground concrete (currently very trendy) instead of tiles or parquet - costs at least €120/sqm.

Either way, costs always depend on the wishes of the builder.

Best regards