New construction with little time - experiences?

Including the other 300 annoying people in the hall and the predetermined program. Nope nope.
I also see the preparation for this by the general contractor/developer as rather simple (a few slots, empty conduit in the concrete ceiling or suspended ceiling). Either you build this yourself or hire a professional company for the execution.

If you want the house to fit you, you will have to invest time.
Otherwise, you save time by reducing complexity. Pick a house from the catalog, two days at the sample center. But the place won’t look like it cost €750K afterwards, that’s for sure.

I also don't believe that you will manage with the wishes for your house plus land and additional building costs with 750€. BW is likely to be in a similar price range as Bavaria. We are also building, smaller, fewer extras but good equipment, and even then it’s not enough (and KNX will initially only be installed as an option, possibly one or two smaller modules, and the expansion will be postponed later for cost reasons). 250€ per sqm will also be in BW rather in the somewhat remote areas; you are aware of that? Even a small plot with only 500 sqm then amounts to 125,000€, plus acquisition-related additional costs. That leaves you just a little over 600,000€ for the house, and all other additional costs must be covered within that. And if you want to live closer to the center, the land will cost significantly more. You have a good salary, but unfortunately currently little equity. For the bank, you have also not been employed long enough yet; meaning: your conditions will not be the best. Either drastically reduce your wishes, or save a good amount for a few more years, calmly look for a nice plot of land, and then start with more equity, longer employment duration, and thus a better standing with the bank.

Your demands lean somewhat in my direction

I have implemented climate control (everything else is child's play!), home cinema (4k projector in ceiling, 7.4.2 Atmos, multi-format automatic screen) and complex smart home. Land price: ~330k for >1000sqm. Additionally, a suitably equipped house of the appropriate size. With kitchen and outdoor area all-in 1.2 million, but also with some compromises. For example, plastic windows instead of aluminum/wood, roller shutters instead of venetian blinds, "simple" architecture.

That gives you a ballpark figure. Conclusion for you: keep saving... 400..500k equity should be the target.

Regards, Steffen

My tip: Save for another 2-3 years, wait until the inheritance is secured.

Just as my own experience, big leaps are not possible for us at the moment:
Construction start September 2016, 3 children, 2 net incomes approx. 2700 + 3800 including child benefit. Parental leave during the construction phase
70k equity
Total current investment approx. 450,000
Monthly annuity 1270.
Land 53€/m^2, 700sqm
Move-in mid-2017, 2 rooms still not finished, outdoor facilities not finished yet, garage still needs to be cleaned

- Prefabricated timber frame house from a premium provider but without expensive cost drivers in the equipment with 165sqm living space, 185sqm total, no basement
- Individual garage/carport combination by the carpenter next door
- House interior finishing done by myself partly by subcontracting firms/self-employed people, partly genuine own work. Especially the expensive and unpopular detailed work done by myself, rework etc. Flooring and wallpaper completely own work anyway.
- Construction management by painter/plumber/heating engineer/stove builder, carpenter for garage, outdoor facilities by me.

I have to admit, it just barely worked out (both financially and time/performance-wise). It was the opposite of "with little time investment." But we had very specific ideas about the house and were able to realize them despite the general contractor. But it takes work. Financially more would have been possible, but at the moment the higher income is halved (part-time) and will remain so for a while. That’s why this was our personal pain threshold. If I had assigned everything and had it done (in the quality) by others, then:
- we wouldn’t have moved in yet: even here in the flat countryside you find few usable craftsmen for certain trades. Choosing them alone is difficult as a layman, and they also have to have time
- Even "turnkey with a general contractor" means genuine commitment with individual wishes, keeping all parties happy
- Coordination with the companies takes massive time with individual ideas. Rescheduling due to rework is then commonplace.

Small example: Acrylic joints on the ceiling: The day before the ceiling coating, the acrylic joints were still done. In the evening I come to the construction site, the colleague of course gone and forgot a handful of corners. 2 options: demand rework (would not have been done the next morning) or do it myself. Otherwise, the ceiling plaster would have been delayed by a minimum of 4 weeks...
Stuff like this is everyday business, even with general contractors. Often they do sloppy work rather than letting a deadline slip.

And that in Thuringia, if I read that correctly, or Steffen? In BW the prices are probably a bit higher...

I also see no possibility to stay under 1 million euros regarding the requirements. Either significantly change the attitude and take a standard house from the [Bauträger] or just save, save.