However, even with an ESA letter, the owner is still responsible if their animal causes damage to property or harm to others.

The death of the previous tenant is irrelevant if there was no damage to the unit.

All of the media sensationalism about mold and electrical damage is from the few bad growers who don't do climate control in their 2000 plants in the basement.

My experience is that you experience far less property damage, etc. with individual rooms. 

You've got tenants that are maybe staying 10 months and they are causing catastrophic damage and each one of the turnovers was at least $5000 or more...one was like 7k..

Some drywall patching, painting, exterior damage fixing (mostly rotten soffits/fascia boards), and a lot of junk removal.

Is it just cosmetic, or is there a risk of the roots damaging the foundation or sidewalk, etc.?  

On average, the lower the rent price, the more problems we have with damage, unauthorized pets, late rent, etc. 

Toilet clogs, pet damage, Tenant caused damages are of course the tenant’s responsibility.

So if you sell it without the appropriate disclosures, and 6 months later the buyers find out by talking to the neighbors, and find that it was well-documented and you obviously knew about it (you even posted about it in online forums), do you think they might be angry enough to sue you for damages (to include their perceived reduction in value, physical/emotional distress, moving costs, loss of income, etc)?