Best retrofit smart home new build

I am currently also working on implementing everything with KNX and would not build again afterwards with switchable/measurable sockets. Building a house is already very exhausting, and the electrical planning and coordination is currently by far the most tiring part. And I am already quite sure that a few switchable/measurable sockets will not significantly increase living comfort. The high effort here is caused by the fact that I am stuck between the general contractor electrician, general contractor heating installer, general contractor window installer, control cabinet planner and builder. So, even though I previously thought it was a stupid idea to hire a system integrator because I considered it a waste of money, I would now either do exactly that or leave sockets out of KNX. Otherwise, you suddenly start dealing with circuit breakers, RCDs, RCBOs, number of conductors, conductor thicknesses, cable routes, cable circuits, and so on, which you actually don’t have time for during the build!

Good point! Of course, the best is if you already have this knowledge beforehand - or a capable electrician whom you don't have to hold by the hand for every single line. But they are like gold dust or unicorns ...

Yes, which builder already has full electrician + system integrator knowledge? They often don’t even have that themselves. ;-)

And even if a lot of knowledge and understanding is present, there is often at least a lack of experience, and even then you have to reconsider for each house which socket should be switchable, measurable, etc.

For lighting, I made it easy from a planning perspective and just ran everything with 5NYM, but even here it suddenly gets complicated because then here and there a wall lamp is supposed to be added and there isn’t the right empty conduit for it, so they have to be connected to the socket circuits.

As I said, you have to deal with many trades during construction, and it becomes very unpleasant when electricity already costs every minute of your free time. I haven’t had particularly good experiences with the KUF either. There seems to be little interest in DIY. They often just say you should find a professional or ask your electrician. Unfortunately, this is often out of touch with construction reality, and the system integrators rarely say what they charge for their service and whether you actually get told by a GU electrician what to do... I’m rather skeptical about that. ;-)

So blinds/shutters, underfloor heating, heating, all nice and good, lighting still works if you just run 3/5NYM individually everywhere.
Sockets are more of a pain. And that despite, in my view, them having the least benefit!

So let's put it this way: I currently cannot tell you for all sockets whether they need to be switchable or not, but I definitely know that I can make every socket switchable if needed. That is enough for me for now. The electrician then has the task of implementing this requirement in such a way that it works well afterward. (If in doubt, I will also tell him how to do it if he can't manage on his own.)

Otherwise, I would agree that not so many sockets need to be made switchable. I see the benefit more in the fact that through power measurement it can be determined whether a device is currently in operation, so that a response can be made accordingly.

ok but I currently also believe that not many sockets need to be switchable

I think I'll leave them out and can then install a flush-mounted Knx RF actuator if needed

That works too, as I said. Just make sure you use deep UP boxes.