These are currently upstairs and the wife hates it. What would it cost to move them to the garage? Just a guess

Without seeing your house and getting measurements, that's what you'll get....
Just a guess.

You talking about rerunning the water or paying someone to move them down the stairs?

Rerunning everything.

Garage floor set lower than main part of house?. I’m guessing it does so that would mean having to tie into the septic lines on the outside of the house.

What dumass had the idea to put those upstairs, in the first place?

Sounds like a time-consuming and expensive project.
I personally would leave good enough alone.

Are the bulk of the bedrooms located upstairs?
If so having the laundry up stairs and not having to tote laundry up & down stairs is a big convenience factor.

The house I grew up in it was downstairs, the house in Irvine was upstairs and I preferred that.

Grasshopper obviously still has good knees.

Too many variables Idot.. Distance from existing drains/water lines in house play a huge part in pricing.

Will be cheaper to move.

You’re gonna have to hire a plumber and electrician at least.

Unless you got spare 220 outlets in your garage.

What would a plumber charge to run hot/cold to garage ,,,, depending on measurements and location of access ,,lets see here,,,location of hot water heater,,, if it's in your garage you're already half way there ,, my guesstimation ,, six hundred to seven hundred to place lines for washer and cut hole for dryer vent,,, run electric for the washer and dryer unless electrical outlet is already available,, if not a couple of hundred I suppose,,,,, if hot water heater is not in garage,,, ouuuuu,, add a couple of grand to that,,, total guesstimations ,,,

hot water heater in garage = $900

hot water elsewhere in home = close to $ 3000 or more

Where the water heater is in the house isn't relative to installation price. Yes, if its downstairs it just means waterlines are close but water is the easy part.. Its cheaper to get closer to an existing drain if possible

It's a WATER heater.
Hot water doesn't need to be heated.

He speaketh the truth

I have thought about doing the same thing. Our washer / dryer is currently in a room that is on the opposite side of the wall from the garage. So all I would really need to do is cut the sheetrock about 4 ft on both sides of the wall and turn the fittings and dryer vent to face the opposite way they are now. Probably frame up a small room in the garage for em. Been putting it off for years.

Mine is in the garage, in a small utility room.
Only thing I don't like is going out to do the laundry, on a cold night, in my underwear.

I stand corrected ,,,it's a water heater ,,

since I left out the drain,, plumber bill goes up a little ,,, but depends on how close to existing drain or sewer line he is if you ask me.

Why do y'all want to go to the garage to do laundry?

Because that is where the washer and dryer will be.