Single-family house - city villa - Are additional construction costs in order? Is the offer available?

Hello everyone,

based on preliminary sketches that we have already sent to the prefabricated house manufacturer, he has prepared an offer for us. After being on site today, I was a bit shocked when I saw the total costs.

Could you maybe help me and evaluate whether this roughly makes sense?

I deliberately provided the information beforehand that we have reserved a plot of land with the following details:


Plot size:605 m²
Purchase price:Included in the purchase price are:
the price for the land,
the street connection fee,
the sewage fee,
the sewage treatment fee,
the water supply fee,
the surveying costs in the current condition, as well as the costs for establishing the sewage and water connection up to the building plot.

(all information is non-binding and without guarantee)
Price per square meter:90.00 euros

Purely mathematically, the plot itself comes to 54,450.00 EUR. Including notary costs, etc., I roughly calculated 60,000.00€ for the plot.

What was then added in the ancillary building costs surprised me a bit. Can it all be correct? A total of 94,059.27€? This is a new development area.

I am aware that this is only a preliminary offer so we can estimate what amount to expect. The 180 m² living space is a bit much, about 150 m² will suffice for us. This concerns a city villa; I don’t want to discuss the sketches themselves for now. I will inquire elsewhere with these sketches so that everyone has the same requirements. It is clear that a lot will still change.

I think the price for the house itself roughly fits. Approximately 1777€ / m² are charged for the house alone.

I hope it is okay that I post the offer here. I tried to remove all unnecessary data.

Thanks in advance for your support.

Best regards, Ravosch

I don't see anything in this “offer” that I would sign. Where is the construction performance description for this offer? The listed incidental costs are not fixed. The provider points out that it is up to you to determine the exact incidental costs. Don’t let yourselves be driven crazy by this promotional period or these credits. In my opinion, this is just window dressing. The potential customer is being pressured in this way! Paying the invoice before service delivery in order to deduct a discount? Very questionable method. Please get some more offers and keep in mind that a prefabricated house is often more expensive than a monolithically built one.

Sounds somewhat realistic. However, on the last page you forgot to remove the provider's name, so you can see who it is ;)

I get a headache when I read this... can you please scan it properly once again? If you have it digitally, just upload it digitally... whether it is ELK or Horstwalter GmbH doesn’t matter to anyone anymore at this point (unless that should argue against uploading the PDF).

I have to admit that it wasn’t very clear to me what is included in the house price and what is in the additional costs (but that also depends on the format). The garage, for example – is it included in the additional costs? Overall, it feels like it could fit. But please be aware that, for example, with €1700 material in the sanitary sector (depending on the number of bathrooms) you are rather getting the standard – the same applies to the other items (flooring, tiles, etc.).
What actually happens with the €5,000 upgrade flat rate? Have you already upgraded the electrical?

But you have already seen that the land purchase is included in the "additional costs," haven't you?