Preparation of smart home in new construction

Hello everyone,

Our house construction is expected to start at the end of the year. During the shell construction, we are supposed to discuss the electrical installation with the electrician. We are building with a general contractor. According to the construction service description, a conventional electrical system will be used here. Additionally, CAT 7 cables will be laid and "terminated on a patch panel"(?).
I was told that I should then express my wishes directly to the electrician and educate myself about the topic of smart home... I cannot communicate with the electrician yet, as he has not been commissioned.

Among other things, we have electric shutters that I would like to control. I only want to use radio as a last resort. I want to proceed with wired connections here. In addition to the shutters, I want to integrate window sensors.

My question is now: What requirements need to be met in order to later control the shutters via logic control and evaluate the window sensors? Which cable must be laid?

I quote a post I just read:

Variant 2: The "I'll do everything later" KNX wiring

An in-wall switching actuator from Jung. Switches one channel and fits behind the socket.

As an alternative, the actuators could be decentralized, i.e., distributed, installed where they are used. If there is a KNX data cable in the socket you want to switch, you can tap into the bus there whenever you want. So, the extreme variant of this wiring would be: you let the electrician do his work and install a conventional electrical installation. One supply line per room, from there light and sockets. Special sockets (oven, dishwasher) get a separate line. However, there are two restrictions:

[*]All flush-mounted boxes are 63 mm deep.
[*]A KNX data cable is pulled to each box. You can do this yourself.

Ultimately, it is important to me that I can integrate logic later if I want. Therefore, this "decentralized" approach sounds good to me.

Decentralized means breaking open existing empty boxes afterwards. You have to find them and then plaster, sand, paint – without it being visible on the wall. Or put a spring cover on them, but that also looks stupid.

I would pull the wiring of the roller shutters directly into the distribution board, so choose a centralized approach. Window contacts too, of course. For that, a larger control cabinet and mounting on terminal blocks.

However, the initially desired conventional switches must then also go directly into the distribution board.

I would simply do it right from the start and not retrofit a single trade later on. Making only the roller shutters controllable does not cost a fortune that you would need to save for later.

"Smart home" extends into all trades. Starting planning during shell construction is far too late. If you yourself are not yet deeply familiar with the subject, you need a good (hard to find) system integrator. KNX is the right way. With this, you can do everything you can imagine.... And the best part is that it is a standard. So you can freely combine different manufacturers. If something breaks or a manufacturer disappears from the market, replacement is guaranteed. Do you want "remote controllable" or truly "smart"? With "smart" you need much more. Recently, there have been several posts on this topic. Otherwise, I can recommend the KNX forum. For blinds, you need switches (if desired), blind actuators, and a weather station. In addition, the line itself (line coupler, power supply...) Depending on the type, the devices themselves already have a certain logic integrated. You can always add a proper logic server (from NAS to DIN rail up to 19") on top. What do you mean by window sensors? Reed switches? Glass break? If you choose KNX, do the whole house at once. Lay bus lines in all corners, ceilings... etc. This way, you can expand it arbitrarily.

Thank you for your contributions.

I am now dealing a bit more with the topic [KNX]. I also think that I can internalize the topic quickly. I just somehow doubt that our electrician from the [GU] can implement it that way...

Smart home has nothing to do with roller shutter control, that does not fall under it because it is not smart. The price-performance ratio in the topic of smart home is miserable, especially if you still have to hire someone.

Any local electrician will wire roller shutters for you.

Just have everything wired in the star, meaning really pull everything individually into the control cabinet. The electrician should initially connect everything there as it needs to function. Meanwhile, you or the electrician lay the bus cable to every drilled outlet. Later, you can upgrade step by step.