Location of city villa or single-family house on 500 m2 plot - rectangular

Yes, it was then also plausible through the explanation and it is also true that the fine grading is elevated above the surrounding terrain. I also transferred the money early this morning. But it lingers in the communication as if I should have known this beforehand and how dare I check the invoice. That somehow annoys me. They would do the same with their incoming invoices if they suddenly turned out 20% higher.

Anyway, moving on.

How do you handle it when something suddenly becomes 1000 EUR more expensive than estimated (mind you, we are already talking about additional costs that simply become more expensive like that).

Invoices must always be checked (before payment) – even without exceeding the expected range. When building a house, after all, we are talking about scales where it is appropriate to behave as carefully as a businessman, even if you are not one. Checking invoices is a completely normal step and accordingly, when there are implausible items, it is normal to ask for an explanation. Traceability is a regular part of a proper invoice. Whether the average consumer normally accepts a three-line "receipt text" even for a four- or more-digit invoice does not have to be your standard. Bauknecht builds stoves, you are the Bauherr :-)

I see it the same way.

It gets even more awkward because this morning before seven, the civil engineer messaged me saying he had heard that he hasn’t received the money yet. He was surprised and annoyed, saying it couldn’t be his problem if they had to fill up more and that I should just transfer the money. Mind you, the payment deadline to the main contractor was yesterday! Well, I have now calmed him down with proof of transfer, but it’s all so exhausting. Especially since I only received the original invoice with the delivery receipts from the gravel plant on Friday afternoon and could only properly check it then. Before that, there was only an email with the scanned invoice but without delivery receipts. So the fact that the main contractor apparently agreed on such tight payment deadlines with his subs that these can only be met with actually unreasonable payment deadlines from his clients, and that he apparently doesn’t have enough cash flow to bridge that for a week, makes me a bit worried for the future.

remain factual and precise and your billing partner is the [GU], except for orders that were commissioned directly with a [SUB]

Yes, of course. I also claim that I can and am always like that with them. But I would be lying if I said that it leaves me completely emotionally cold.
A direct order is also up in the air because of [Schacht], although your contact said I should try to apply for it without [Schacht] first.
I think all these events only give a deep insight into the situation of the [GÜ]. Well, let's hope for the best for the shell construction, then I'm almost through with that. Actually, I then "only" have electrical work, screed, and plasterer with him, the rest I will do by self-award.

I think all the events only provide a deep insight into the situation of the GÜ.

Since Basel II, I have sensed a tendency that the BT and increasingly also the GU outsource liquidity to the customers (buyers or builders). In the past, it was rather the rule than the exception for BT that objects were marketed only during construction – not infrequently only after the topping-out ceremony. Today it is common practice to act on demand and often even to order the excavator only after the signed construction contract. The GU have followed suit; increasingly they are set up as more or less “shell GUs” with included site manager and office staff, often with only four permanent employees. More and more prospectors try their luck there in a thin shirt in the wind and attempt to improve their margin liquidity-wise by optimizing payment terms as the man in the middle on both sides. You seem to be well served with your GU, although not as happy as . But globally, today every builder should actually be advised to request a credit report quarterly before moving to the next payment plan stage.