Own contribution - how to present it to the financer?

Sorry, but you are hopefully thoroughly familiar with the term "Schlüsselfertig". And impatience is not necessarily a good foundation. ;)

Best regards, Sigi

possibly plaster walls

If you've never done it before, it's really a sh... job. That's why usually 70% of the working time is counted, because it simply takes a long time.

We originally planned to stain our visible wooden ceilings (entire ground floor and upper floor up to the ridge beam) ourselves. A few weeks ago, we calculated the area and came to about 400m². Now we're having a painter do it :).

well, the woman on the phone said everything will be done except walls and floor coverings in the turnkey execution. unfortunately, this varies from company to company. here, for example, the sanitary facilities + installation are included, in others not. oh wooden ceilings sound nice but when I read that I also feel quite differently^^

well, the woman on the phone said everything will be done except walls and floor coverings in the turnkey execution. unfortunately, this varies from company to company. here, for example, the sanitary facilities + installation are included, in others not. oh wooden ceilings sound nice but when I read that it makes me feel quite different^^

Just get some offers for your own contribution.... then you'll also have a "rough price" from a professional. It's not really nice towards the painter / parquet fitter but well...

well, the woman on the phone said everything is done except walls and floor coverings in the turnkey execution. unfortunately, this varies from company to company. here, for example, the sanitary facilities + installation are included, with others not. oh wood ceilings sound nice but when I read that I feel differently^^

Sounds good - but it's only half the truth. If tiles are not included, they usually won't install the sanitary fixtures for you. If walls are not included, then door frames and door leaves... I would find out what you really have to do yourself in the end.

In earthworks performed as DIY, the area shown in the floor plan is often meant. Without tiles, you can't screw on the sanitary fixtures, so they are often already installed. Tiling yourself is also a matter for the unskilled.

Everyone somehow says that, but for many employees it is nonsense because they don't earn more even with overtime (e.g., with trust-based working hours). But it is true for self-employed people.

Only a few have trust-based working hours and I can log every minute. Besides, it doesn't necessarily have to be overtime but unpaid leave (which I actually wrote and you skillfully did not quote). Paid leave is also possible, but in a maximum of 6 weeks you won't accomplish anything big and after completion you need leave to "recover" and you are also exhausted. Furthermore, with construction companies that offer all-inclusive packages, they hardly give you anything back if you want to do the trade yourself.

As an unskilled craftsman, DIY work must be treated with absolute caution. You very, very, very quickly overestimate yourself. Even the obligatory wall work alone overwhelms man+woman under warranty. We would have had to wallpaper and paint about 500 sqm of area. We then handed that over to the painter of the construction company. We only did the floor coverings ourselves and even for that we needed every complete weekend between screed drying and moving in, including a professional (carpenter with 30+ years of professional experience with this) and other craft helpers.

With electrical installation, you can still do 2-3 things yourself, such as network or speaker cables. These have little to do with the actual installation and there is no reason for warranty exclusions.