I am somewhat disabled however I still work.

How to get SS disability at 20 when there ain't a dang thing wrong with a person, how to get maximum "benefits" to "get you gov checks", than to earn in cash. how to maximize time on benefits. 

Someone has a mobility disability?

The only thing that kind of sucks is if you don’t have disability rating the funding fee is high. 

However, I read that Airbnb places a max of 90 days you can rent out your property as a STR and will disable your listing once the max is reached for the year.

The law requires disabled persons to have a minimum 30-day relationship with their licensed mental health professional (LMHP), who must be certified to practice in California.  

@Kylie Gerstein the department of developmental disabilities may work with group home providers in your area who could use this type of home.

Personally I'd disable, winterize, or remove it due to costs of maintenance.  

Is he mentally disabled ?  

Simple solution: Inform them that unfortunately you can’t accept ESA letters without being able to verify the validity of the letter by speaking with the local licensed mental health professional who prescribed them their ESA, so that you can verify that they have a legitimate disability requiring an ESA as well as that whoever prescribed it to them is a real licensed mental health professional who has an ongoing relationship with them beyond just receiving a one-time payment to “prescribe” the ESA.