But unless this is a commercial loan (e.g. 5 units or more), anything requiring permission to obtain a second is unenforceable.

This can be done after obtaining court approval through a petition for permission to sell the property by the executor or administrator of the estate, under the guidance of the probate attorney.

Also, is it legally permissible to share information about the damages with their new landlord if they don't pay within a specific timeframe? 

It sounds more like you are asking permission to do what you want to do rather than advice.

I would ask what criteria they used for screening and get tenant permission for them to share all of that with you if possible. 

Illegal split" could also mean the subdivision was done without proper permissions.

If they decide to paint the walls, they should paint them back to the original color before leaving, or ask you for permission to leave it as is.

You need permission from Fannie or Freddie to change the deed, which is rarely granted.

If you're still with in your inspection period you don't have to ask the seller permission.

California has specific mold laws - I suggest you read up on themCalifornia's "Toxic Mold Protection Act of 2001" authorizes the state's Department of Health Services (now called the Department of Health Care Services) to set permissible levels of indoor mold exposure for sensitive populations (like children, or people with compromised immune systems or respiratory problems).