My pops worked on wall street in Manhattan for 33 years.

Mine had burrowed into the walls in several locations, so he knew they started at least a couple of years prior.

With you retaining an option to buy him or her out at a fixed return

Since then I have focused on arranging financing (ex-Wall Streeter) for large commercial properties but looking to get back into the game. 

Best for attics since it will settle in a wall.

The Client will be provided a copy of all signed agreements and extensions, and the Property Manager will retain a copy.§3-2 The Property Manager shall communicate regularly with the Client, either orally or in writing and shall provide the Client with written reports as needed and as agreed between all parties.

If they clean regularly, the mold won't grab a foothold.If they can't keep it under control, consider hiring a contractor to enter the wall and look for bigger issues.

With regard to the houses not being dont,  your right they Philadelphia got so hot it was hard hire and retain contractors to finish the houses.

It is also customary in my area for C class apartments to have window style unit AC permanently installed in the wall.

Almost daily he is cussing and screaming aggressively at the top of his lungs, I can hear him punching walls and throwing stuff in the apartment.