Maybe you can just exclude them since your history with tenants using those services shows that rent payments become spotty; if excluding them means you won't get many applicants, then maybe there is some other adverse action more suitable, like a guarantor or co-signer required, bigger security deposit, etc.

In general, I cannot imagine you lease has language specifically excluding sale of property from renewal talk, AND even if it did you are not selling mid lease. 

Again these are prime areas that would exclude most of OC, LA etc.

No one is excluded from this.  

On that note there is a very real reason that none of our domestic insurance companies (Allstate, State Farm, Geico, Progressive, on and on) will cover flooding - this is because they know that any property (and I do mean any property) has a 20% of flooding so they don't want to cover it and it is excluded in the policy language (under exclusions).

The list of excluded items are so extensive that judgement are very rarely collected. 

Exclude suicides.

It's perfectly legal and it's actually your job to discriminate against anyone else you don't want to rent to, which normally includes people who don't appear able to pay the rent or get along with their neighbors.But, there is no law against you saying you only want a cetain type of tenant, as long as it doesn't exclude someone on the protected class list.

B class apartments (exclude movement from owner to renter because there is also renter to owner).

Nice part is if your insurance does not exclude animal liability (I'm seeing it more and more on many insurers forms) the lawyers is also paid by insurance.