Construction costs rise by up to 30%

In advance: I wish you a good house and an early move-in date. Much frustration will subside. What you write leaves me with the impression that you are actually in quite good hands, the construction time is not alarming, and the opportunities to be taken advantage of have gone unused.

Now it is so that we had agreed with our architect and planner on total costs ("turnkey") of 2200,- to 2500.- EUR

That is a common goal but not an agreement, because ultimately the contracts with the contractors that the client enters into count.

Today we did a cash count

The surprise comes at the cash count if you have not stayed financially closely involved with the project continuously.

The problem is that I don’t even know what caused this cost explosion.

See above.

The question now is how one should behave. Should one accept it because the market is as it is?

Learn from it, get closer to the project and the craftsmen, ask more questions, work out solutions and alternatives to expensive items together. Accepting is passive. As a client with an architect and self-award, one is a better active manager.

Or should someone else check carefully whether we have paid far too much somewhere?

That is coming to terms with the past, which does you no good. What you signed for you also have to pay, even if you bought more expensively than necessary. An auditor only costs money again.

We were always told everything was market-appropriate.

That sounds passive again. Statements can be checked, additional sources can be consulted...

The construction work now takes almost 1 year, also due to the pandemic. Many tradesmen "slotted us in" almost; offers came late or not at all. Coordination was therefore really difficult. The verbally agreed move-in date has now been exceeded by several months.

What construction time until move-in did you plan for—one year is quite normal. Several months exceeded—did you want to move in after 7 months?

I would read up on this here.

https://www.hausbau-forum.de/threads/baukosten-gehen-aktuell-durch-die-decke.38976/

Cost control doesn't start only when it's too late.

Cost control does not start only when the child is already in the well.

Well, the child is not in the well, and who as a client hasn’t had a more nervous phase at some point during the project.

Well, the child is not in the well, and who as a client hasn’t had a nervous phase at some point during the project.

yes, but not when the project ends.

yes, but not when the project ends.

Apparently, that is not the case.

Construction costs increase by up to 30%

1. There is nothing you can do about that. 2. Building with an architect on your own usually ends up being 10-20% more expensive than initially calculated by the architect. 3. Currently, construction costs have risen by 15 to 25% due to the pandemic.

Overall, in my opinion, you have gotten off "pretty well" with the architect + corona combination with 30%.

Better be glad that you have factored in a sufficient buffer and have not ended up in the unpleasant situation of having to finance additional costs.

Other builders certainly did not have such foresight and now have to finance expensive additional costs on top.