It depends on which way the door opens from the mud room into the garage.

It opens into the mud room.... So where should the garage door opener be?

I'd leave it in the garage so you don't always have to enter the house to close it (i.e. if you're working in the garage and want to close the door).

This is new construction... The electrician put the switch in the mudroom. I think it belongs in the garage. Unfortunately the Sheetrock is in, and the house is painted. The interior doors are in and trim nearly complete. Having it in the mudroom makes no sense.

It can still be moved. Where do the house plans call for it to be?

In the garage

You can have more than one switch. I rented a house that had three. One downstairs, one by the front door, and one in the garage. After I got used to it, I loved it.

Garage. Make them fix it, sheet rock can be repaired. Plus, when you have it inspected in the end and inspector I would suspect would say it's in the wrong spot. In fact, I wouldn't be suprized if there is some sort of building code that addresses this.

I think you are making too much of the idea of having more than one switch. Garage doors have very sensitive mechanisms that prevent the door from hitting anything as it closes.
The idea of multiple switches is that if you enter the house through the garage and forget to close the door, you can close it from inside the house. And, if you leave through the front door, and do not have an outdoor switch for security purposes, you can open the garage door without having a clicker on your person.

There is only one switch and it is in the mudroom. I do believe it would be simpler to add a switch to the garage and keep the one in the mudroom... That way we don't have to repair the Sheetrock. This is just one of many issues we have had with the electrical. It took an electrician over 3 days to fix other issues. One of which was in the master... The ceiling light was wired and the switch was in but the switch wasn't connected to the light.

I'm a paranoid person so I like to shut the door while I'm still in the garage and can see that nobody has sneaked in behind me. We are in a safe area so this is a far fetched scenario. I wouldn't be comfortable coming into the house and then closing the door but that's just me.

If you have kids, I'd be concerned about them playing with the switch if it is in the house. If I got stuck in the garage, I know I can manually open the door, but could a child or small adult reach the pull lever or be strong enough to pull it hard enough to open it? I think you have reason to be concerned. Get your general contractor to fix it. Let him deal with the sub.

If there are multiple switches, I think that would work fine too, especially if there was some indicator so you know that the garage door is open or a window in the door. Can you even have a window in the door to the garage anymore? Not sure, there are really specific codes about doors to garages for fire safety and it sound like this is new construction. So, sounds to me like the electrician put this in the wrong spot, now, the builder doesn't want to pay for them to fix it, the builder shouldn't pay for the drywall repairs, or the electrician to fox it, they should be fixing it for free because they didn't do it right the first time. It's like this...if you hired a plumber to install a faucet and they switched the hot and the cold would you pay them to come back and do it right, or would you expect them to stand by their work and come back and to it the right way?

Houses are rarely perfect on the first go. It isn't a big deal to have subs come back and fix things. Just contact the builder, not the sub.

There is no code as such except to follow the manufactures directions. It should be at least 5' high, so young kids can't mess with it. It should be within sight of the garage door, but opening the door from inside the house is within sight. When I was a kid, it used to be a game to run in and hit the garage door button on other people's houses if the door was open. This could be their rational. Don't just put another button outside if there are kids around, because it will look like a doorbell button, and it will get pushed at the least convenient times.

We are the builders. We are the ones hiring and paying the contractors. Unfortunately the electrician hired a sub to wire the house. It was supposed take 5 days but took over 3 weeks then another 3 1/2 days to fix the problems he caused....the sub has caused all the problems. This doesn't look like a door bell, it is square.

Sounds like the electrician is on the hook to deal with it. He hired them and paid them, and was supposed to be supervising them...at the end of the day, it's your house. If it doesn't bother you and a building inspector doesn't say anything you could always just let it slide. The only potential problem I can see is what a home inspector might say when you go to sell the place, but you can always cross that bridge when you come to it.

I guess you've already cut the electrician a check........

If you just put a second button in the garage, it would just be a doorbell button. I am saying that the square one is the one you want in the garage. The hole you will need to patch should not be very big, but if you put the square unit in the garage, you will still have screw holes to patch if you try to put a second button over the wire holes.
It is the general contractor's responsibility to inspect everything and make sure it is correct before covering with sheetrock. Especially on matters of preference. They are not getting paid to do nothing.

Fred, we don't have a general contractor. There were so many electrical issues that this one slipped by everyone. This square one apparently has a code for the door opener. We either need to buy another one from the door company to install a second one or we need to move the one we have. My only point with this thread was to confirm that it really should be in the garage.

Well, I think our work here is done!

Kadodi, maybe I misunderstood you statement but if you have to activate yours with a code, shouldn't that be on the outside of the house? That's how we activate it from the outside. I wouldn't want to have to out a code in every time I used the door. Then our smaller square one that you just press is inside the garage. Anyway neither is in the house.