I would think that might work...if you allow 24" for cabinet depth and then 42" for walkway, you should be okay. I don't know how large dog crates are though? Do you have a floor plan/diagram you can share?

I am getting a floor plan picture together that I can post. The dog crates that we have are 24 wide so they wont be any wider than the cabinets.

Do you think 6 foot wide minimum? or would 7 be the minimum?

I would do 7' at a minimum....I wasn't even thinking about w/d depth being different, so if that's 3ft, and you allow 4ft for the hall/pass by (which I think would be needed for this space), then I'd go with at least 7.

6 feet is too skinny. We have a mudroom in our new build and it is 5 1/2 feet wide with lockers on one side. The lockers will be less than cabinet depth and I would consider this the minimum after being in the room after framing. The laundry is what causes the problem. You need 36" for the machines and then you must allow an additional area to stand in front of the machines and allow for a door (if they are front loaders). We leave the door to our front loader open often (otherwise you get smell issues - we have never had this but those who close their washer door do!) I would think 8 feet would be better - 7 sounds too skinny too as it would leave a 4' wide hall, max, which is not that wide (sort of standard).

athensmomof3,

Is the 5 1/2 feet wall to wall and then lockers stick out from there? We have 5 1/2 x 20 as a long mudroom for storage (no laundry) in our plans, and it might be too narrow. Widening will take space from the garage.

Yes, the 5 1/2 feet is wall to wall. It is not too narrow but it could not be any narrower I don't think. It will still be sort of traffic jam-y but if we made it wider it threw off the back hall and the rooms upstairs. I certainly wouldn't want it any narrower.

P.S. My mudroom is a separate room with one door so you don't walk through it. If it was a hallway/passageway I would think the 5 1/2 feet would be too small for sure.

Our mudroom is not a hallway--it is 7'2" wide. The door from the garage enters the mudroom at one long end, and then there's another door to the kitchen.

I still feel it is too narrow--there's the washer/dryer which we need access to, a cabinet/utility sink, the freezer (which really doesn't fit well) and then shelves for shoes and hooks for coats.

I'd definitely want the room to be a foot or two wider--and we don't use it as a hallway.

If you don't plan on space for hooks/shoes/etc, 7' might be wide enough--but mark it out on a floor with boxes that go as high as shoulder height to get the "feel" and I suspect you'll want that hallway at least 8' wide.