How do you search for a suitable property developer?

I have installed the first 200m, across the entire ceiling, between the lower and upper reinforcement. that's holding up.

But it's not about me here. You have to see what you like and what you don't, and then find the appropriate construction company accordingly.

there are certainly enough who operate nationwide, that's why I asked here which "companies" have been experienced well or poorly.

Feel free to ask, but a somewhat more precise question would be more effective, or searching in regional forums is very effective! Also the search in house building blogs would be worth mentioning – addressing in the question what and where you have searched would be useful for the forum participants!

when I read this: moved in January 2014 and still not finished I am glad that with me it only starts laboriously here in this thread ;o)

Well, then you can quickly do an estimate for you: WE signed our building contract after 3 months of consideration 'build a house yes or no' (2013), had it built turnkey (2013) and after a water damage (2014) still do not have the possibility to lay the floor covering in the last room. This summer we made the garden and the outdoor facilities enjoyable. As our own work we completely did the painting work during vacation (2013), from which we still have not recovered (2014). In no way anything like electrical work or so... just painting – and I am fast, good and experienced... but my profession has first priority!! ...

oh, when it comes to own effort I might be at a slight advantage, I am building the double garage with two colleagues on my own....electric work, a few work colleagues are helping me there, the single-family house will be finished by the weekend.

Well, only the house is missing (

well then, I will go back to the WWW and continue searching

oh, regarding own effort I might have a slight advantage,
I’m building the double garage alone with two colleagues.... electrical work, a few coworkers help me, the single-family house is finished by the weekend.

As you say... You should find your priorities, because...

Well, only the house is missing

So be it

If you think you can manage that in one weekend, then go ahead. One more weekend painting and tiling and another one for the heating.

Then you'll be done quickly, but I already predict a massive overestimation of your abilities or, if you really can do everything, at least a massive underestimation of time and thus costs due to double workload.

And you don’t just build a garage like that.

Good luck.

If the house is missing, then everything is missing!!!! In a house with a garden, there is always something to do, but good that it will be different for you then