Cost of a single-family house, where is the market heading?

How is that supposed to work? The architect only obtains the offers later... how should he know in detail whether the roofer has raised prices by 10% since the last construction, or if he has to switch to an alternative?

But how am I supposed to arrange my financing if I don't have clear numbers beforehand?

That's exactly how it works when building with an architect. We took the cost estimate and added incidental construction costs, outdoor facilities, etc. as well as a 50k buffer on top of the estimate. Then we went to the bank and fixed the financing. Additionally, we have a large "emergency fund."

We only know the final costs once we live in it, and they also strongly depend on ourselves. Even today, I have no idea what we will need for the outdoor facilities. 25k is planned. If necessary, you have to restrict yourself if it’s not enough.

We have great trust in our architect and also know several clients of his.

Regards, Steffen

For us, the offers are based on long-standing business relationships. Orders also come about at short intervals (because a variety of construction sites are being managed). He literally always tells us: Craftsman xy knows which prices he has to put in to get the order. So far, I was only able to underbid the architect's contacts with my own tender for heating by a few hundred euros.

I don’t know how big your property is; but we were also advised to budget EUR 26,000 for the outdoor facilities. We have 462 sqm and unfortunately have not yet been able to talk to the gardener about a cost estimate.