I've no homestead experience, but lots of diy building experience.
I myself need a big, cheap waterproof space to work in,so here are my plans.
I plan to build a high tunnel.
I will actually frame it in wood.
Framing with dimensional wood is easy,and lumber can often be had for free.
The posts will be anchored in gravel and fieldstone, contained in free draining buckets to keep the soil out and treated with borox.
Inside I will tamp the soil, lay down pallets, cardboard, 6mil plastic,more cardboard,then a hardboard floor,taped at the seams.
I will bait in the space inside pallets,with peanut butter/Portland cement.
The plastic sheeting of the roof will be protected from sun and wind by used carpet,though rolls of used carpet are increasingly hard to come by.
I got this idea from some here on permies(Alder Burns: https://permies.com/t/83958/Tiny-House-Advice-Requested#695157
), and it has worked great on my chicken coop.
I never did as he did, further protecting the carpet with mud-n-stucco type stuff, but fallen leaves do form soil on the surface, and things are starting to grow.
If I was going to stay there, I would build a
foam structure like a hexayurt in one corner.
The insulation plus body heat might remove the need for space heating.
Cooling on the other hand...
If I needed active heating/cooling I might:
-build a RMH
-Keep an uninsulated tank of heated water in the insulated hut.
-Run an RV air-conditioner off of ground mounted solar
- Run an air to water heater exchanger to/from a shaded water supply.
-Run a trickle of water over the roof for evaportive cooling.
No indoor flames without constant supervision.
Bed might be a hammock or a zero gravity chair.
Cheap, portable and anecdotally comfortable. Off the ground for air circulation.
Phones and lights on solar, heavier loads on propane powered generator.
I think running now generator on propane
could help avoid many mantainence issues.
Pee diverted to the landscape, poop diverted to vermicomposting.
If I did live like this, I'm sure it would affect how my actual house was built,having experienced a different way of living.
I can imagine adopting the hightunnel as my home, or running back to the city...