Dream house possible with our financial means?

Yes, in Ingolstadt the real estate madness has just broken out..... higher inflation rate than in Munich, but even in Eichstätt currently 400-600€/m² are being asked without [Einheimischen Modell].

Well, I’d love to be your electrician, then I could easily retire already
4000€ for a planning office and you still made many mistakes??? Whoever has a decent electrician doesn’t need a planning office ripping them off like that.
And if you don’t buy the KNX components expensively from the electrician but online (keyword Voltus, MDT), then you get by for pure KNX hardware with about 5-7k€ + about 12k€ for the normal installation.
For example, an acquaintance paid 17k€ last year for his complete KNX installation (he did the chases himself).
And who in the world charges 15k€ for pure KNX programming??? 2-3k€ is more realistic...
But apparently it varies a lot regionally...

Before you start talking big here... better ask about the backgrounds first. I had written... WE (meaning me + my wife) made some mistakes at the beginning... because we DID NOT YET HAVE a proper planner. You don’t need a KNX planner?!!! Either you really have no idea or you understand KNX as “lights on and lights off.” Then you really don’t need a planner. Our electrician could have done that too. We use KNX (as well as DALI, onewire and various media systems) holistically to realize truly smart functionality. I didn’t dare to take on this very complex planning myself. By the way, myknx even wanted 5000 EUR for the planning and you probably know them very well.

And... of course we got all components from Voltus. And a large part from MDT. KNX is so complex that an installation can’t really be compared to another. Our KNX cabinet measures 1500x1900 and is FULL!

Whether our programming actually cost exactly 15k I don’t know... but certainly not 2..3 or 5k. We are talking about KNX (around 220 devices and many hundreds of group addresses), DALI, ONEWIRE, Gira Nameserver, Linux KNX server based on Debian, openhab, eibd, smartvisu, mpd for multiroom, special connections for gas, projector, wine fridge, controlled residential ventilation, ekey and quite a few other things. We definitely push the smart home pretty far... no question. But your claim “we paid too much” just shows one thing: You have no clue

Regarding programming costs, I have to agree with Steffen80. They can quickly skyrocket if it should be even slightly customized. I'm currently noticing this at work when I try to outsource simple programming tasks.

I can fully confirm Steffen's statements.

However, if you trust yourself to do it, you can get a system like the one Steffen describes for under 20,000 euros. I did the entire planning myself, and I will also do the programming myself. The wiring of the distribution is done by my brother-in-law (electrician), I handle the media, and we also did the rough installation ourselves. Only the distribution setup was planned by myknx for 400 euros. With this own work, you can realize such a KNX system in this form for under 20,000 euros. Generally, you can also start small with KNX at first, as long as the wiring is prepared accordingly. Then you can also start for under 10,000 euros. You have to really trust yourself for that, as it is an important trade.

Otherwise, it is only recommended to take a knowledgeable SI for the planning, they are specialized in this, and to have the implementation carried out by an electrician you trust.

Before you start boasting here... better first ask about the background. I had written... WE (so me + my wife) made some mistakes at the beginning... because we DIDN'T HAVE a real planner yet. You don’t need a KNX planner?!!! Either you really have no idea or you think KNX just means "light on and light off." Then of course you really don’t need a planner. Our electrician could have done that as well. We use KNX (as well as DALI, onewire and various systems for media) holistically to realize true smart functionality. I didn’t trust myself with this very complex planning. By the way, myknx even wanted 5000 EUR for the planning, and you probably know them very well.

And... of course we sourced all components from voltus. And a large part is from mdt. KNX is so complex that you can’t compare one installation with another. Our KNX cabinet measures 1500x1900 and is FULL!

Whether our programming cost exactly 15k I don’t know... but certainly not 2, 3, or 5k. We’re talking about KNX (about 220 devices and many hundreds of group addresses), DALI, ONEWIRE, Gira nameserver, linux KNX server based on debian, openhab, eibd, smartvisu, mpd for multiroom, special connection for gas, projector, wine fridge, controlled residential ventilation, ekey and a lot more. We certainly push smart home to the extreme... no question. But your claim "we paid too much" only shows one thing: You have no idea

So I have no idea about KNX... yeah sure, let it go
Certainly KNX is not all the same, but if you scare someone off here with the blanket statement "20k€ is totally unrealistic for KNX and you have to expect 40-80k€" that is absolute nonsense!
Switching lights/sockets, presence detectors, dimming, shutter control, power monitoring, individual room temperature control, window contacts, a few sensors and gimmicks are easily possible for 20k€ and that’s what most people need.
And for that you don’t need a planner, any electrician should be able to handle that and should program it for you in 1-2 days (at least the electricians I know).
Sure, you can also push it to the extreme, but then please add that to your aggressive price announcement as well...

Thank you Hakkinen, your points are exactly what I imagine a home automation to be, that's all we need and all of this should be possible with a Loxone KNX system. Well, I will see what the extra costs are and then simply weigh it up.