From my own experience: Take the time to check whether the single-room controls are actually controlling the correct valves/heating circuits. For example, we wanted to heat the bathroom, but the playroom of our little one always got nice and cozy because the heating circuit was on, but the ERR was measuring in the bathroom. The other way around as well: the playroom was turned down because it was too warm, and the bathroom stayed cold.
It was wrong for us too. You have to figure this out first when you have underfloor heating. At first, we thought individual rooms wouldn’t work until I figured it out. This was already 2-3 weeks after acceptance, because before acceptance, all rooms got warm when all regulators were turned up. The electrician came by, fixed the plumber’s mistake and swapped the valves in the distribution cabinet once. And that was that.
You will have a hard time including the windows in the acceptance in spring because a lot can happen to the windows in the meantime. If it doesn’t work out, check the windows for defects and when the craftsmen come in spring, have them confirm the windows are free of defects beforehand. If something then happens, the craftsmen are responsible again. Of course, you can only accept the windows if they are free of the protective films beforehand. Make sure to also check from the outside whether there are already scratches. The front door frame is also important because it has been heavily exposed (the sash itself often comes only at the end) and in the end is the first thing every visitor sees.
With many defects, repairs are often not economical. Start thinking about what money/extras or similar you want for small cosmetic defects. Properties are usually worth more than cash since the companies can get these much cheaper and their own employees don’t cost 100€ per hour (which is usually charged to you). Examples of extras you could negotiate during the final inspection: pleated blinds, entrance platform, shower door, contributions for garden/paving work, or small things like “having all windows cleaned.” This of course depends on what the construction company itself can provide (or its subcontractors).
What kind of long list do you have with the electrician that you can already write a story about it?! Our neighbors had problems with the radio blinds. Our guys then knew how to connect them. At our acceptance, one socket was missing (the blank cover was screwed on), and one switch was stuck for a roller shutter. Both were replaced in 5 minutes. Additionally, two switches were changed so that other lamps come on when activated (our wish, not a fault). The electrical foreman was very satisfied after apparently getting no praise from the company boss on previous sites.
What you should also pay attention to: silicone! Look everywhere where silicone is stuck. If the stuff is everywhere like with us, have it properly removed, explained to you, and ideally get the cleaning agent for it right away. You don’t want to end up with a hardcore chemical that ruins the new tiles immediately.