Thank you I'm guessing they are metal sided.

Same with the AC, Cleaned the coils inside and out and replaced a faulty fan motor but did not replace it so I'll need the cap-ex money eventually.  

Dryer must be vented to the outside.Tenant agrees to install, at his/her own expense, steel-braided washer hoses to the washer, and metal ducting to the dryer.

The yard is concrete(fun) so I have already figured out how to install a wood fence while keeping the metal posts intact.

@Michael Plante the wires running from the barn electrical box to the multiple lights hung throughout the barn run on metal.

hey just some advice from a plumber ive been doing plumbing for 5 years nowyou said you had a iron sump pit, likely the pit is beginning to corrode and thats the cause of the iron deposits, now a days most pits are made from composit plastics ,another possibility is the piping could be the cause if its a metal pipe [iron or galvinized steel ] it could be contaminating the water being pumped out, again most pipes now a days are PVC either sch 40 ,80 or ABS to prevent this issue, it could be the pump is corroded and failing but if its working i doubt that its that ad if the pump was that bad it likely would have failedother than those the only other thing that comes to mind is that it could be something in the basement that is made of iron or steel that is in the pathway to thw water on its journey to the pit.hope this helps

With metal cabinets, foam-roller painted in Rustoleum, dark gray.

Lennox is the one I am familiar with) regarding failed coils.

We knew we would make a good chunk of money off selling our first home, therefore we wanted to put that profit towards upgrading some things on our new house (metal roof, hardy siding, etc.)

I can build a house for $90 bucks a square, so an empty metal building i would guess would be in the $50 range at most.So whats the point of doing shipping containers over conventional storage building?