Contrary to popular belief all low income renters wont kick in walls and trash the place.

Now, the silly part is that below the roof line standoff the telephone wires are attached against the outside wall and near the box, unlike the electrical at the weather-head and meter-back that are kept isolated.

If there is mold in the bathroom because of their issue (not running the fan or high usage), then let them know that they need to clean the walls more often. 

Around here these situations are more commonly handled with a "party wall agreement" that applies to both owners of the shared wall.  

The house is a REO and the bank treated mold and took away all the walls/ceiling/floor, basically a shell with only wood studs.

.:   1st floor demo 4th pic:  Bathroom & backrooms still standing pre-demo5th pic:   1st floor as open shell , all walls down & new sub floors 6th pic:  Framing of 1st floor started GROUND/CELLER FLOOR: BELOW 1-2 pic : Pre-demo 3 pic.:   demo (All walls taken down, a total MESS!)

They were knocking on walls, jumping on floorboards, and had a mess of concerns I didn't even fathom. 

People will always have something negative to say no matter what the topic; I find it best to pay no mind and only retain the aspiring or relative content of a conversation, if there is any.

The basement has a few cracks, nothing that covers the full width/length of the basement walls but there is a noticeable deflection (about 2") on the East wall.

The brick walls and foundation all appear to be in good shape as long as the roof is repaired sooner than later.