I think I may have mislead you a bit due to how I framed my question.
For clarity, I’m capable of tinkering myself a bit: point in case I have a HA instance on a Pi3 running in my apartment right now (using only zwave plugs and other basic integrations), fully self installed and with automations up and running. No external help needed.
So what I’m looking for is an installer able to install the (zware or zigbee or WI-FI) switches, camera’s, security system etc, and to do the initial integration/setup.
From there on I can perfectly handle the system.
The reason is simple: I’d love to do it myself but no time and no electrical competency to physically ‘grid’ switches it into the house.
Hope this helps.