What else comes to your mind? Or do you have any good tips?
I’m happy for you. We were in the same situation in 2000 and I can tell you what has proven itself and what I would do differently. So I’ll just go through your list:
[*]KNX is a matter of preference. We deliberately did not install it in the house currently being built. Based on our experience with three demented parents so far, we don’t believe in being able to operate that stuff in everyday life later on; we’re now just shy of 50. If KNX, then I would do everything with it. I’m just a play kid.
[*]Network cables are also a matter of preference. We get along quite well with Wi-Fi in our townhouse. The boys like to game, they have PowerLAN; direct LAN would of course be better.
[*]Power connection in the garage, suitable for electric cars: definitely do it.
[*]Ventilation system in bathroom and laundry room: nice to have.
[*]Empty conduits for photovoltaic: definitely.
[*]Garden well: has proven itself very well but was also very simple for us. We share a well hole with the neighbors. Each has their own pump connected.
[*]Separate domestic hot water pipes – to save drinking water that’s great. Whether it pays off financially is questionable.
What has proven itself is:
[*]Water and wastewater connection on the top floor (we have a second bathroom there)
[*]Large (several) roof windows with shutters
[*]The largest possible windows (if you have the choice towards the garden), because light is rather scarce in a terraced middle house
[*]Switchable power in the garden
[*]Water connection on the terrace garden side
[*]Talk to neighbors early and settle things like garden fences or not. (We have great neighbors)
What we would have done better additionally is:
[*]Water connection in front of the house, e.g. to water the front garden or supply the kids with water balloons
[*]Switchable power in front of the house.
[*]Sectional doors in the garages opposite, so you can park in front and still get into the garage
[*]More power outlets
What we’re still glad we left out:
[*]Garden entrance to the basement
[*]Having the developer do the flooring and bathrooms, that worked out great doing it ourselves
What was a clear mistake: We believed the developer that there would be no more end terraced houses. We bought house 2.18 in the settlement. They said that was the first construction phase. I still asked why our houses started with 2 and the others with 1. That had to do with the direction faced. It was all a lie. We were among the first buyers and among the last who could move in. The developer had previously developed another construction site nearby. After finishing our construction site, the company closed. Since the state of NRW held a 50% stake, there were follow-up contacts who handled warranty cases well. However, we had no more complaints. We are satisfied with the location and the build quality.
Good luck! Max.