Mounting a TV is simple. Running power to it legally is not. The moment you cut into drywall to hide cables, you're doing electrical work that requires a license and a permit in North Carolina.
Most TV mounting services use extension cords inside the wall, power bridge kits with no permit, or leave the outlet on the wrong side of the room with a cord running along the baseboard. None of that passes inspection.
Running an extension cord inside a wall is a direct National Electrical Code violation. It is also a fire hazard that can void your homeowner's insurance. An inspector will flag it immediately.
We install a proper recessed outlet directly behind the TV, route all cables inside the wall through listed raceways, and pull a permit when required. The work is inspected, insured, and to code.