I'm assuming, from the tear down in your laundry room, that you are a bachelor.
Not married, but my girlfriend lives with me. She learned early on that you have to unplug the welder to run the dryer

I washed a pair of aluminum heads in the dishwasher once and it worked great. Just let me say that my wife came home early, caught me in the rinse cycle, and I am never going to do that again.
That I could see not going well. Did it leave an oil slick in the dishwasher?
Are you maxed out in terms of space or will the authorities let you add on at some point in the future. I don't think you told us but counting blocks I came up with 16x22. That is a nice size for a service bay but constrained if you want to do tear downs, have a solvent washer, or a blast cabinet.
Will the authorities let you run a carport type roof along side of your house? That will give you cover for a couple of vehicles.
I'm not maxed out by code, but I"m maxed out in the amount of yard I am willing to give up so this is it as far as I'm concerned. You were close it is 18x24. Coming from doing tear downs in the laundry room I'll figure out a way to make it work haha.
No carport. The house is 15' off the property line and any attached structure has a 15' offset, so no room. Detached has a 5' offset as well so that wouldn't work either.
