Planning a home automation system - what is essential and what can be put off?

Hi,

I am planning to install home automation in a newly built house. As part of my budget planning, I am wondering what is essential and what I can let go of or, for example, just prepare the wiring now and buy the rest in a while. E.g.:
1. the weather station - I can prepare the whole system, but buy the stations themselves when I finish the garden
2. do I really need that many circuits for the lights, i.e. do I need to control all the lights. What is the saving, if any, if I install traditional switches in part of the house, without control
3. cameras and drive I can buy after the move in, I don't need to do this straight away
Itp.

What are your opinions. What do you think is necessary or what can I spread out over time.

P.s. I know it also depends on subjective preferences, but I am asking in general and about your experience.

afgi82 wrote:

Does it really need that many circuits under the lights, ie does it need to control all the lights. What is the possible saving if I install traditional switches in part of the house, without control

I don't know if there will be savings, but convenience certainly. I was retrofitting an existing installation, meaning I had traditional switches and smart home ones at the same time. There was a constant need to add (replace) controls - "appetite grows with eating". Only in my case this involved replacing the switches themselves in the walls, or adding remote controls on the walls in the shape of switches.

afgi82 wrote:

3. I can buy the cameras and drive after the introduction, I don't have to do it right away
Itp.

I distinguish several aspects here: additional security against intruders, protection against damage like flooding, remote control of smart systems (lights on), keeping an eye on pets at home while you are away. Try installing one camera, this will give you experience as to whether the quality is sufficient, how many cameras you need and where to mount them.

And do you have any idea how much each additional loop costs for lighting in KNX? Assuming, of course, a cable quantity of, say, 20 m. What does the cost add up to?

afgi82 wrote:

And do you happen to know how much each additional loop costs for lighting on KNX?

.
Don't worry about the extra wire, and take a look at the price list for KNX devices.