Make sure you remind them if they think it’s bad for their health they should definitely move out today.

My health conditions worsened severely the two months I stayed there, he also forced me to surrender the security deposit because he knew I feared being trapped in that lease despite having legal cause to break it. 

The good news as a buyer is that it's a slam dunk health and safety inspection item objection.

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).

Current scenario:  One of my family members has a health issue and we would like to purchase a residence closer to the rest of us. 

_____________If Yes, please provide a statement from a health or social service professional indicating that you have a disability and explaining how the animal is able to do work or perform tasks that alleviate one or more symptoms or effects of your disability.If No, please provide a statement from a health or social service professional indicating that you have a disability and how the animal alleviates the symptoms or effects.Please attach statement with any additional information and contract information for the professional completing the statement._______________________________________ _______________________Signature of Person Making Request Date_______________________________________ _______________________Signature of Person with Disability Date

It basically functions as a stepped up Basis to your Heirs.If the Appreciation is significantly more than $500k, I would say it makes a lot of sense to look into some sort of Capital Gains Tax mitigation.BUT, is there a risk that one or both Parents may wind up with costly health care at end of life which may confiscate the Asset?

People were going online and getting bogus ESA letters....Here are some reasons I looked up where a LL can deny an ESA:*They are unable to provide sufficient documentation, such as the emotional support animal letter, that verifies the ESA is necessary for their health and well-being.

It is free money don't waste it and you also need to make sure they have the correct health inspections and fire inspections and their own insurance and it has to say it is good on your property. 

My husband owns a non-profit called All The Way Well which helps people suffering from substance use disorder/mental health and it sounds like something that would be right up your alley.