Construction costs are currently skyrocketing

In what way is that questionable? Each on its own or the combination?

The combination. What's the point of the fleece if Q4? What's the point of the bio-silicate if fleece is glued to the wall. And anyway, silicate needs a mineral substrate to silify, as far as I know?

Somehow reminds me of the story a painter friend experienced with a client: He had a ridiculously expensive organic clay interior plaster done and then wanted to cover everything with a kind of latex paint because "otherwise the wall would absorb too much moisture." The internet is a curse when people think they can derive knowledge from collected snippets of information. Hope that's not the case here :D

Somehow reminds me of a story a painter friend experienced at a customer’s place: He had a ridiculously expensive organic clay interior plaster applied and then wanted to cover everything with a kind of latex paint because "otherwise the wall would absorb too much moisture." The internet is a curse when people think they can derive knowledge from gathered snippets of information. Hope that’s not the case here :D

The icing on the cake is when people then praise the life-changing effect of the organic clay plaster, even though they have nailed three other 100% impermeable barriers over it.

I expected less.. But the forum can surely assess it better

I find it too expensive. And not even close. First, I wouldn’t go for Q4 and then put on painter’s fleece. Also, don’t paint with silicate but with dispersion. Have painter’s fleece (130-150g/sqm) glued on, but first ask the painter about the quality of your plaster. A good Q2 plaster is enough. Maybe sand a bit afterwards. The offer here was: Almost 500sqm of ceiling and wall surfaces Q2, sanding and repairing, priming, painter’s fleece 130g, 2x opaque coating. Partly colored. All including materials from Brillux for 9,500.- gross. The offer was from June 23.

Today I visited the provider for terrace roofing again after the newsletter advertised 30% off only for tomorrow.

Chronicle:
First offer at the end of 2022: ~25k
Second offer in mid-2023: ~22.5k
Offer today: a flat 19k

Furthermore, the fence builder is throwing around a 20% discount and the pool builder also independently reduced the price by a good 18% overall.

Since I have been comparing all three trades for a while and following the newsletters, a price decline is already emerging, which is based on the already generous base prices due to the hefty discounts, but there is movement nonetheless.

I have still not commissioned any of the trades because I am firmly convinced that it is only a matter of time until there are even more discounts. Is it immoral to speculate on that? I don’t think so.

A friend told me yesterday that his shell construction is coming in 28% cheaper than 14 months ago. Another reported 10% cheaper than the offers from last year.

The BR recently published a video about insolvencies of several developers in Munich. Yesterday the insolvency of a larger developer from Düsseldorf was announced who were supposed to build a huge residential complex in our city. These will be tough times for the industry.

After the fat years, there is also the other side; those who were good have already made provisions beforehand.