Assessment of construction costs for a 170 sqm city villa

It also depends on whether you build the city villa from Town & Country with a prefabricated garage or the individual architect's house. The first mentioned should be possible for 500k, with the latter you are definitely at 650k.

Thank you very much for the feedback. A few more pieces of information: We had previously considered building with a local general contractor in order to be able to design our individual floor plan ourselves. Furthermore, we had only planned for own labor in the interior work: electrical work through a buddy (electrician), doors, floors, wallpapering.

[*]We are somewhat shocked by the prices. Do the 3000€ per sqm refer to the construction costs including incidental construction costs or does this mean 3000*170 = 510,000 + 40,000 incidental construction costs? That would then already be 550k just for the house, which we consider to be very much. [*]If we decide on an architect with individual awarding of trades instead of a general contractor, could we save money compared to the "full-service" package of the general contractor? [*]In the case of individual awarding of trades: How do you see the possibilities next year to benefit from falling prices due to poor order situations in some trades or falling material prices? Or would you tend more towards a fixed price in this situation? (i.e. a general contractor)

[*]We are somewhat shocked by the prices.
Do the 3000€ per sqm refer to the construction costs including incidental construction costs, or does this mean 3000*170 = 510,000 + 40,000 incidental construction costs? That would already be 550k just for the house, which we consider very high.

510k + incidental construction costs.
It may be that you consider that expensive...

[*]If we decide on an architect with individual awarding of trades instead of a general contractor, could we save money compared to the general contractor's "full-service" package?

No, it will not be cheaper.

[*]In case of individual awarding of the trades: How do you see the possibilities next year of benefiting from falling prices due to poor order situation in some trades or falling material prices? Or would you tend more towards a fixed price in this situation? (i.e., a general contractor)

Material prices will not fall; generally betting on falling prices is gambling.
Personally, I don't believe it will get cheaper, why should it?

Go to your local general contractor and a few prefabricated house manufacturers with your wishes to get a feel for the prices. That helped us a lot right at the beginning.

We are somewhat shocked by the prices. Do the 3000€ per sqm refer to the construction costs including incidental construction costs, or does it mean 3000*170 = 510,000 + 40,000 incidental construction costs? That would already be 550k just for the house, which we consider very expensive.

With 550k you are actually calculating quite tight. Because in addition to the 510k (3k x 170m2), the following guaranteed incidental construction costs will still come:

Building application
Building permit
Surveying
Soil report
Possibly demolition of old buildings
Tree felling work
Setting up a construction road
Removal of soil or soil replacement
Development costs (electricity, water, sewage, telephone, etc.)
Construction water and construction electricity
Insurances

and additionally, of course:
Kitchen
Furniture
Driveway
Terrace
Garden
Solid garage

If things go well, you end up around 600k, but if you maintain your high demands, it will rather be around 650k. Otherwise, you have to reduce your wishes. 150m2 instead of 170m2. Prefabricated garage instead of a solid garage (that already saves you 20k). No clinker bricks on the garage (why bother?). No clinker bricks on the house. Or simply 2 normal parking spaces (the others can be added later). Realistic for a budget of 500k is, for example, a white plastered townhouse Flair 152 Re by Town & Country with prefabricated garage. You should get the house turnkey for 400k. But more is not possible with that budget at the current prices. Unfortunately, you are building at the absolutely most expensive time in the last 12 years. For comparison: in 2018, 2k per m2 was normal. Within 4 years, prices for a turnkey house have increased by 50%. And it definitely will not get cheaper. Keyword: inflation. Because material prices will not go down due to the war and wage prices will easily increase another 8-10% due to union demands. I see no reason for optimism here. It may not get much more expensive, but it won’t get cheaper either.

In the case of individual awarding of trades: How do you see the possibilities next year to benefit from falling prices due to a poor order situation in some trades or falling material prices? Or would you tend more towards a fixed price in this situation? (i.e. a general contractor)

The tighter your financial situation is (income and equity), the more important a fixed price is now. Currently: New year, new crisis. Prices and interest rates could fall, but they could just as well rise again. This is hardly predictable at all.