Keep looking at different 戸建 houses these days, found one common problem: I want LAN cable going different rooms (don’t want to rely on WiFi only) and need more sockets with grounding, but basically no one is doing this. Asked those house builders and they simply refuse to modify (or just reply me with “not possible”). Anyone has done similar things after buying a house? Trying to figure out if I can add it myself, or any other solution I am not aware of?
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One option that you could look into is power line network adaptors.
https://www.lifewire.com/best-powerline-network-adapters-4141215
As far as LAN cabling is concerned, are you sure that you’re asking the question correctly or that it isn’t a language gap issue in general?
Speaking anecdotally, every house and apartment I have looked at in the last 10 years (new buildings of course), had LAN cables pre-pulled to every room from a central location (usually wherever the breaker box was). There is no reason I can think of that a builder of a new property wouldn’t have this as an option or would otherwise outright refuse it because it is a more common request in recent years, unless they were not understanding the request.
Are you buying an already made house? When I was building mine I just told the builders to run conduit to every room and bring it all out in a specific location. They also did the LAN cable running but if they didn’t, the conduit makes it easy to DIY.
If your new house is still being built, I think you can reasonably ask to have conduits setup.
As for grounding, yeah… Had to fight that too, lots of “why” faces etc, ended up with grounded outlets/strips in most places where its needed and usual stuff elsewhere. Panasonic does make standard 3 prong grounded outlets (like WTP113238WP, which does the both worlds of “screw ground” and 3-prong) you could theoretically buy some and tell the builders “use this” instead of whatever stuff they plan to put in there? Problem is that default romex or whatever equivalent for Japan doesn’t include ground in it, so if they already have the electrical stuff laid out it might not be possible to get a ground in there easily.
Regarding LAN cabling, you can hire an electrician to do the work for you. Search for LAN配線工事. You can use the conduits and junction boxes for telephones. Or, you can do the wiring yourself. I wired several rooms but it was a fun project.
I’m not sure why the builders wouldn’t be able to add more power outlets with grounding. It will be difficult to add afterwards.
Newer houses usually have a conduit where additional cable can be pushed into.
Another option that I have seen people do is to run cables in the crawlspace under the house and drill upwards into a wall and put in a new socket. Although this probably can only be done for first floor rooms. For second floor rooms, you probably could run cabling through the attic then the remaining challenge is how you connect the attic to the crawlspace.
I live in a house built well before the internet age LOL – we’re mostly wireless, but I do have a couple of LAN cables to my PC and PlayStation – we pin the cable along the floor boards and over door frames. My wife is an effin’ genius at this, it’s essentially invisible.
Mine is having same problem. Have a port coming from pole to 2nd floor, but my office/gaming room, living room is on ground floor. Had to buy long wire, take it out from window and straight to hub. Then from hub to respective devicey😂