There is no heated place to put the pressure tank. We don't have a crawl space or basement. And no room in the utility room. At the moment I have this hideous wood box 4x4x5 covered in tarps. Its been a temporary solution for 5 years.

I was going to build a proper well house this spring by the car accident we had kept me from building anything.
The well box is insulated and I have two CFLs providing heat to keep it from freezing which has worked so far. We need a to build a proper well house to allow easier access to the well and so we can install a water filtration system.
The wifey's family has an old farm house that has to be at least 100 years old at this point. The well is in a well house that is at least 12x16. They somehow have managed to maintain the well in that house. My MIL has a well house that is about 4x4x8 and is made of brick. That well is newer so it sounds like they could just pull the pipe out the door. In my area you build a well house that contains the well and pressure tank or you put the tank in the crawlspace.
We have power outlets, power lines for a future barn, as well as the pressure tank right at the well head. We have to build a well house or do a bunch of electrical and plumbing work.
I have a couple different well house designs I have been playing with for years. I think I will just build the well house roof so I can unbolt it and lift it off with the pallet forks. I guess worse case we would have to take apart the well house if we something really went bad and the drill rig had to have access to the well.
Later,
Dan