Flat lighting control under £1k: Arduino/RPi, PWM wiring, Poznań?

A general refurbishment of the flat is being carried out, including the replacement of all electrics.

I would like to be able to control lighting, both on/off and pwm + possible extension to some mains sockets.

What relatively affordable (up to £1k) can I consider?
Will something other than RPi or Arduino be found?

In the meantime, I am looking for people from Poznan who would be able to program such a control.

(Future question if no one is found)
What does the installation based on these boards look like?
What kind of wires (twisted pair?) and how many cores to pull to each luminaire?
Should the wires start at the switchboard and end at the switch socket where the relays will be?
Can the wires go in the same conduit as 230V? Are they to be additionally insulated?

I am at the same stage and have done some reading on the subject.

You have to answer the question whether you are a hobbyist who wants to torment your family for the next few years with your ideas and variously working light , or whether you want a commercial solution after all.

The latter has the advantage that if you run out or want to sell the flat, such a solution will increase, not decrease, its value. You will find a lot of material on the murator form about ready-made solutions.

An intermediate solution is to use the pseudo-commercial project "hapcan", which was opened this year and you can buy ready-made modules, putty to assemble, or go yourself to the electronic exchange to buy parts and make something at home. Some of the software is available, as well as all the schematics and board designs.

As for cables, unfortunately I can't help you as I'm at the stage of reading about it myself. I'm happy to join in with the question about FTP or UTP twisted pair. My electrician says they put in twisted pair without a shield, because shielded twisted pair has to be specially earthed and if you don't do that it's drama . Would be nice if someone could confirm this who has experience.

I'm one of the people who often torment their family with various inventions and I'll have an RPi + two mods on ARM I/O + CAN around the house. Initially, I wanted to make four mini switchboards in the whole house (190mkw) only with modules to collect data from sensors + relays to control lights, but such solutions smell amateurish and unfortunately lower the value of the house, because no one will service it.
Eventually, I will have two normal switchboards where everything meets and there I will combine it as I wish. So I recommend the solution which is closest to generally accepted standards.