No doubt having your skill set will serve you well.

@Darryl AllenIt would no-doubt strengthen your position, but probably weaken his ... he could secure conventional financing easier without you.  

I will turn out to be a "he said, she said" sort of thing and without proof, I doubt you could make a case without counter-suing the property management agency. 

Consider using green board (water resistant) for bathroom walls and cement board (water proof) for walls around the tub & shower.

Since it's written off the same way, doubt it matters.

After using a 10-pound sledge hammer for way too long trying to remove the cinderblocks, re-bar and anchor cement, I thought "There must be a better option!"

@Jim Brown, There is no doubt that motivation is what I need more than anything at this point.  

I doubt it, but I do not see it mentioned.For example, one property could be loaded with asbestos, the other not.  

So factor that in with the cost of bringing it to court and I doubt it's worth it.

I've never seen a job (which means "just over broke") that would put that sort of promise on paper and I doubt that this one will, either.If your days truly are free, why in the world wouldn't you invest that time (your MOST valuable resource) in yourself and learn better how to earn for yourself?