International Students are moving because they claim they cannot afford it, coupled with tuition fees.

What data supports your claim?

It is often used by the likes of Uncle G (who, having an accounting degree himself, should know better) to suggest claiming personal expenses as business deductions.

Whether your statements are true or false, whether we have evidence to support or deny a claim, it will never be something blasted on the internet.

I used to work with a marketing company who claimed they could get me leads of properties already listed STR. 

I would imagine the best actions would be to immediately fire the management company, pass the keys onto a new one, sue the old one in small claims court for the listed damages.

Because the legislature has passed protections for unpermitted units, a tenant should not be able to make any claim if it is a safe unpermitted unit.i agree with your sentiment on getting the ADU permitted, but not for the reasons you stated.  

They claim a 3/2 can rent for $2,300.

Cost Overruns: After the final payment, the contractor claimed there were additional costs of $60K.

On the other hand, this phrase is often used by the likes of Uncle G (who, having an accounting degree, should really know better) to suggest claiming personal expenses as business deductions.