Lighting, Light Fixtures, Ceiling and Exhaust Fans - moving a switch to two three way plug/lights

We have two light switches at the bottom of the stairs, in the foyer on the outside wall of the house. I want to move those switches basically across the foyer entrance (about 3 ft) to the side of the stairwell wall because I have a mirror hung over the switches right now which does not work with respect to using that switch. I know that those lights are on the same circuit as the bedroom on the second floor above the room with the plug (that works on that circuit) and next to the second floor hall whose lights are connected to the switch and also works on that circuit. How do I "shut off" that switch from the circuit and install another one with conventional electrical wiring where I want it? Oh, one more thing, I opened the box (under the mirror) and the wires come in from the top of that box. They come in from the bottom of the box on the other side of the downstairs room and I haven't checked yet to see which way they come into the upstairs hall switches but there are three of those that work the same set of hall lights. Am I looking at a mess here? We have a fish tape and a lot of time and some patience...can I do this without tearing up my walls while still using conventional wiring?

The easiest way to do this is to leave the existing junction box in place, but to move the switches. You would remove the switches and run a cable or two from the existing box to the new box where you would install the switches. The type of cable or cables depends on several factors. You then cover the original box with a blank cover.

Completely removing the box involves tracing out where the wires come from and where they go to, and running new wires from those locations to the location where you want the new switches. At that point you can then abandon the wiring in place and remove the original switch box.

Some opening of walls is going to be required. How much is dependent on your house.
You should also be aware that any conenctions you make must be in accessible junction boxes. You can not make connections and cover them up inside the wall. Behind the mirror is OK if you can get to them by removing the mirror.
This seems like a lot of work just so you can hang a mirror there. Also I don't think it would be code compliant. You need to have light switches at the entrance to the room as you enter it.
It would probably be easier to have holes cut into the mirror so the switches can be mounted in the mirror if you insist on having a mirror at that location.

The easiest way to do this is to leave the existing junction box in place, but to move the switches. You would remove the switches and run a cable or two from the existing box to the new box where you would install the switches. The type of cable or cables depends on several factors. You then cover the original box with a blank cover.

Completely removing the box involves tracing out where the wires come from and where they go to, and running new wires from those locations to the location where you want the new switches. At that point you can then abandon the wiring in place and remove the original switch box.

Thank you so much.....I like this idea. I hope I was being clear enough with my hackneyed explanation. The entry way has two light switches...and yes I hung a mirror over them...but it isn't touching just completely hiding them so they are unusable. One of the switches operates a plug in the "living room" the other operates the lights at the top of the stairs. The "living room" switch has a partner switch on the wall in the dining room that also operates that same plug. The hall light switch has THREE other switches placed in the upstairs hall to operate those lights. Can you tell me what sort of cable I can use to run from each switch across the foyer (via the basement of course) and just to the wall at the base of the stairs (which is also the entrance to the living room so it is a reasonably accessible move, just more practical) so that I can snake a set-up for a box with two more switches into that wall and have everyone stop complaining about the lighting situation in our house? I thank you and apologize if my clarification was redundant or inadequate in any way and thank you so very much again.

I can't answer that question without knowing the wiring that is presently in the box.

More than likely two 14/3 or 12/3.
If you are lucky, you may be able to move the entire cable for the living roon outlet, if you know what you are doing.

I like Joeds' idea.

Get exact measurements, go to the glas guy, get it cut. Mount the mirror and buy a 2- gang mirrored wall plate.

You'll love it!

Hello and thanks to everyone...WE DID IT...it came out just wonderful...a little glitch with the original drilling into the floor but nothing major....I am so excited to be able to have BOTH the mirror intact and the switches moved...between you guys and the people at Home Depot...who told us what to look for when we were wiring...it works wonderfully!!! Thank you so so much...this project has given us the courage to run the wire for a stove and another outlet as well as build a half wall to hold the plugs in our kitchen area downstairs...THANKS AGAIN!!!

Kitchens have very specific rules. Make sure know them before you start that job.