If on a concrete slab I would seriously consider a metallic epoxy finish.

@Tyler JamesIRA Services Trust Company offers self-directed IRAs for investing in alternative investments such as real-estate, notes, metals and tax liens, for example.

Do it once, throw some metal nosing on there, done.

My estimate: 2-3k New HVAC Unit (not just the unit outside), Coil, ... etc will need work.

But older vehicles that have acceptable impairments (dings, dents, maybe sheet metal damage, etc.) but aren't leaking fluids and start and sound 'normal'... there are some reasonable buys if you stay patient, even (occasionally) from the high volume sales areas like Raleigh. 

I bought a 6 pack of metal cutting blades...we used a sawzall.

Paid a buddy $150 to excavate by hand for me and help feed the metal.

You will have a lot of trouble with them, find a good mason that works fast, I say mason because any wood, metal or plastic fence will be destroyed over night, build a block wall and fill it solid with concrete and rebar.

If it’s the former, replacing the ac and coil should be in the $5k range.

@Patrick O'Connell $7k to delead and then a couple more to wrap the exterior window trim in metal to prevent all that deleading.