I have walked properties where $3K sufficed. 

Since it is not rent control he might have more options and the notice is suffice IDK. 

I don't think the structure is damaged or weakened (no leaning that I can see) but just holes where branches came through and plastic lining dangling some.For the black mold, will using bleach water to clean it all up suffice?

Simple case law will suffice.

I'll get the material or make a run when needed to keep him on the job.Any common reliable car would suffice. 

Maybe join a local investor group to ask them.For this househacking, your standard insurance should suffice.

In terms of taxation if one wanted to hold and avoid this liability, wouldn't a 1031 suffice?

A plumber bill usually will suffice.

Maintenance requests hardly need a sig, a phone call from Uncle would suffice.

Is the lease necessary or will notice to terminate suffice?