The manufacturer suggested a plastic sheet moisture barrier between the wood and the new floor.

During the winter it caused sublime and moisture in the heating unit. 

But meanwhile if you don't want to go gently into that good night - here's some other options.1.

No ventilation over stove or in bathroom - Moisture built up in home leading to more damages?

This scares off a lot of people so be aware Just need to shop around for a great contractor and ask for referrals to not get screwed over Mold Try to figure out where it is coming from so when you get the property you can eliminate it Mold comes from accumulated moisture Be careful about mold in the basement, there may be a leak in the foundation Compartmentalized configuration By removing a wall to open up the kitchen it usually makes it more appealing Landscaping If the yard looks horrendous, there is a lot of opportunities there JUNK Lots of junk discourage a lot of buyers when it's pretty easy to clear outThree Problems I Avoid When Shopping for a Rental Property Neighborhood Don’t buy in class D areas.

Your right though, I am sold on this as my future, I'll have to gently sell her on it.

The moisture from the plants will eventually eat away at the house.

However, you'll want to repair/fill your cracks before you put down flooring so that 1) your flooring is laid on a nice flat surface and 2) moisture doesn't penetrate from the ground to your finish flooring. 

SO, would you mind please informing me of what I need to know (right after the part about starting with an experienced commercial realtor) What a realtors part would usually entail, what buyers should be doing.Don't be gentle.

Some of the old mortar is crumbling and there are spots with moisture residue (photos attached below).