All are adjacent to the existing stack, and drywall/plaster will be removed in each of the rooms so plumbing and electric will be accessible.  

Are there visible signs of electricity at the site?

Develop the land to provide water + electricity.3.1 Install manufactured homes on the land and acquire renters.3.2 Install horse stables and rent space to horse owners.4.

Some things, like upgrading the electric service, is kind of a no-brainer that it needs a permit.

Could have electrical issues or potential fire hazards.

They may just have you rip out the sheetrock so they can inspect the framing, electrical and insulation.

So you've got equity gained by retiring the debt with the tenant's payments plus the equity gained by the asset appreciation and it's like a double bonus.Debt that is not productive or is for depreciating assets, such as for old credit card debt or automobiles, is the type of debt to avoid.

Don't forget electrical hook up.

It sounds like you definitely need heat in there, maybe electric baseboard heaters for ease of operation?  

Mitsubishi Electric is going well, but passive income is certainly the better option.