Smart home consultation new construction wireless

Yes, that may be true, everyone just has their priorities. I completely agree with Untergasse43 and partially with his words... for one, the focus is on the technical equipment of the building structure. For another, on the garden design, and for a third, the whole thing has to be as sustainable as possible.

A prime example is, for instance, a fireplace/stove in a modern house with underfloor heating as necessary as a goiter. Including all investment and procurement costs for the stove, chimney, etc., often around 10K. It is then used by normal users without their own forest 2-3 times per season.

Your statement fits just as well.

my statement also applies to pool, sauna, car, etc. ;-)
Nevertheless, with smart home it’s not like I don’t have the basic features with solutions from the shading company itself, like Somfy for example. The lighting can be implemented via Philips HUE. Even with Google Home, 90% of all applications can be covered. All that costs a fraction compared to KNX, Loxone, Resideo, etc.
These are all standalone solutions that are less smart in the sense of being networked, but each system works wonderfully on its own.
I also can’t think of any meaningful example of logical connections I should realize with the individual trades. And that in a way that brings me more comfort and maybe additionally saves money.

That smart home saves money in the private sector is a very widespread myth...

The big problem I always see with these isolated solutions is that you are completely and defenselessly at the mercy of the manufacturer's mood.

If they lose interest and discontinue the products and something breaks, that's really annoying. Imagine a roller shutter control breaks. The manufacturer is either bankrupt or has stopped production. Suddenly your shading for that one window no longer works.

In my opinion, it only really works if you manage, somehow, to network all devices with each other.

Best example. If you have a photovoltaic system on the roof, it would be nice if all consumers like hot water preparation in the heat pump, dishwasher, washing machine, dryer, etc. knew when the sun is shining. And then start accordingly.

Well, you can take the risk if you rely on reputable manufacturers. In the worst case, there are radio actuators like EnOcean, Zigbee, etc.

Yes, these functions (except for the washing machine) are nice , but if you compare the installation and commissioning costs, you can run the dryer, heat pump, and dishwasher for decades with costs of 0.50 euros per start.
Such a partial island solution never pays off...
Not even if I am an eco-freak, because the production of the individual devices and their disposal are out of proportion to the used "green electricity" from photovoltaics.
It gets even worse when a power storage system comes into play.

And: I can certainly already set times for the wash cycle on the dishwasher, washing machine, dryer, etc. On the device itself.
What good does it do me if the devices only turn on when the photovoltaics provide power, but I need the laundry, dishes, etc. immediately?

These are then all stand-alone solutions that are less smart in terms of being interconnected, but each system works wonderfully on its own.

Only until the time comes when these systems start to interfere with or hinder each other or annoy the residents because this or that doesn’t fit, and that will happen sooner or later.

For example, a roller shutter that goes down while you’re in the garden. The Somfy roller shutters, the heating control, and the Hue lights continue to work perfectly. Only the resident is locked out because the key is inside.

Also, you usually need a lot more devices/sensors with this approach because this or that sometimes requires the same sensor data/feedback but the systems can’t communicate with each other since one system uses ZigBee, another uses Wi-Fi, and the third uses some completely proprietary technology.

And no, sorry, a "smart home" with 20 apps on the phone for operation is not a "smart home."

You yourself mention the point that you can get the "basic features" with the individual systems. But quite often you find yourself in a vendor lock-in. You are then dependent on the manufacturer's products. It’s different with KNX.

I also can’t think of a meaningful example of which logical connections I could realize with the individual trades, and in such a way that it brings me more comfort and maybe even saves money.

Well, you probably won’t save money with it. But it saves time and increases comfort. Meaningful connections arise in managing time-dependent power consumption. Or lighting controls and scenes. For example, "normal" houses only have a few light groups, meaning the general and well-known light source. With more possibilities, suddenly people get more ideas. But what you don’t know, you don’t miss.

And: I can certainly set times for the dishwasher, the washing machine, the dryer, etc. for the wash cycle.

But you then have to do it every time. You do it 1-2 times and then stop again. In an intelligent system, that runs by itself. Set it once and that's it.

What use is it to me if the devices only turn on when the photovoltaic system is producing, but I need the laundry, the dishes, etc. right away?

That’s where the human factor comes into play, and according to Asimov’s law No. 2, you can still turn on your washing machine, dishwasher, etc. directly at the device. Or remotely start it even if it conflicts with the originally set rules. KNX supports that.

Such a partial island solution is never worthwhile...

Precisely. That’s why KNX relies on comprehensive automation and not only that. It starts much earlier by retiring conventional wiring and moving to structured wiring. This saves those unnecessary costs and avoids the accompanying limitations.