@Gabriel Santinnot sure i follow the question. 

What I've heard through them is as follows: The student body has changed drastically over the last 10-15 years.

Quote from @Joe Mills: You are exempt if you meet one of the following requirements:Owner-occupied buildings Properties with four units or fewer that are owned and lived in by the ownerSingle-family homes Homes that are sold or rented without a broker by the owner, as long as the owner doesn't own more than three at onceIf those don't apply, then you must abide by Fair Housing and you must make reasonable accommodations for people with assistance animals.

However, we always send our guests the following message after they have been in the home 3 nights: "Nowthat you've been in the home for a little bit, we're touching base to ensurethat everything is going well.

Some follow up questions.

Follow the lease, letters from lawyers, see her in court?

Following- I’m based in California 

I even tell them to reach out to me if they have questions, knowing only a few will actually follow through.And that’s what sets high performers apart from the rest: taking action when most people hold back.If you’re just starting out, remember, one conversation could change everything.

The tenant suddenly stopped paying rent, claimed 'banking glitch' and squatted for 6 months while we worked through the evictions process. The court ordered the tenant to pay back-owed rent plus interest. 2 years pass...

Buy something then the following year rent that out and then buy something else. 6% interest is better that 100% interest in rent in my opinion.