Running Ethernet Cable through Walls?

[DenverGP]

I had a similar job to do at my old house.

Found a wall in living room that was directly above a drywall wall in the basement.

I had to cut the drywall in the living room, about a 1 foot by 1 foot square, about 6 inches up from the floor. Thru that opening, I was able to use a long spade drill bit to drill down thru the floor (including thru the living room wall footer, and basement wall header.

Then in the basement, I cut a small outlet sized opening. Ran the ethernet cable down thru the hole and fished it thru the outlet opening, then wired it up to an ethernet wall plate.

No drywall repair needed in the basement, but the one in the living room will need to be fixed. In my case, I lucked out and there was a closet on the opposite side of the living room wall, and I was able to cut into the wall inside the closet, so the repair didn't need to be completely finished. I just put the cut piece back in, did some sanding, and mud/taped it and I was done.