Years ago, I tried powerline networking, and it never quite worked for me. But, a recent dead spot in my residence caused me to give it a shot again. Wiring to connect the two locations where I needed network access would be an involved process.
Powerline networking adapters are simple square boxes with a network port. You plug your network into one end, and it comes out the other side. Some of these adapters also act as wireless access points.
It worked surprisingly well, although I was only able to get 2mbps…but this was plugged into an extension cord. The adapters tend to have degraded performance if not directly plugged into the wall.
The adapters I used were an inexpensive set of TP-Link AV200 adapters I got for $25, but there is a faster standard…AV500. On the far end, I hooked up a wireless access point. I have the option of adding a switch in order to wire in items.
So, if you haven’t considered powerline networking of late…you may wish to. A wire is still better, faster, and more reliable, but it is not always an option.