In general I think humane treatment comes down to intent and communication in situations like this. 

These items you can just tell visually what kind of condition they're in, and you can ask when they were last replaced too. 

Buy some trees and have tree spaded into key visual areas. 

If you are waiving, you need to determine the source of the water moisture causing the mold and the extent of the mold. sometimes, mold can grow in non-visible areas and can be worse than visual assessment. 

And it takes hours…  This process could probably be automated a bit using some visualization tools in Python (software scripting language).  

Once side, Attorneys and suits take time/effort but on the other hand, we have to fight for the unfair/unjust treatment, so they don't abuse others.

Add $1 for the ceiling treatment is reasonable.

One phone call solved the problem--DMZ and spot treatment--along with a squeeze of caulk in the space.Good Luck!

They type of stain determines the best treatment.

Also, if you are seeking to become a passive investor and want favorable tax treatment upon the sale, consider becoming LP in an investment that offers Bonus Depreciation.