New build - which SmartHome system?

Thank you very much for the detailed notes. I have the appointment tomorrow and am confident that we will make progress.

Good luck. Don’t let the electrician unsettle you if he says something like PMs aren’t necessary, or "Do you really want to paint the switches?"

I have the feeling that he is not exactly the best contact when it comes to KNX planning...

I’m curious to see what comes out of it.

Good luck. Don’t let the electrician unsettle you if anything along the lines of “PMs aren’t necessary” or “Do you really want to paint the switches?” comes up.

I have a feeling he’s not exactly the best contact when it comes to KNX planning...

I’m curious to see what comes out of it.

So I think much of what is written on paper here is due to the goal we set: “Smart basic installation, expandable” allowing manual intervention. We went through it completely again today and we stick to it. We have now found a price that is back within the planned budget. PMs have been left out for the time being.

OK. Too bad, but your choice. Do you at least foresee cans for PM?

OK. Too bad, but your choice. Do you at least plan to include cans for PM?

Yep, we have planned that. It was important for us to lay the foundations so that the "infrastructure" is established enough to be able to expand it in due course. The reed switches in the window (closure sensor) cost us another €59 net per window; we are still torn about whether we should prepare those in advance as well.

The reed contacts in the window (locking sensor) cost us another 59€ net per window, here we are still torn whether we should prepare them in advance as well.

At least put some on the patio door and other windows through which you want to go outside. And of course also on the front door including the bolt switch contact. For the other windows, you can lay cables and retrofit them later if necessary. Or switch to EnOcean at some point.

Good with the PM. This way you can react if needed.
With the window contacts, I am with Mycraft. Everywhere is good to allow a certain level of monitoring. For example, I have a warning issued at the button next to the front door whether something is still open somewhere.
But at least for the patio doors, I would strongly recommend them.
For example, you can also use them to automatically switch the outdoor lighting when it is dark and the door is open.
I have also set the presence detection with the PM so that presence is recognized in the kitchen when the door to the terrace is open.
The PM alone would not be able to manage that and would then switch to absence. This way, the ambient lighting and music remain on in the evening when sitting on the terrace.

I can recommend Stefan Heinle's book for the whole topic. Great explanations and informative for beginners.
It is called "Heimautomation mit KNX, Dali, 1-Wire &Co"