The only time I have seen landlords place questionable tenants is if there is no other action on the property and it is a low income area.If a property sits vacant in those areas for too long they can steal everything out of the unit an strip out all electrical and plumbing.

And shows what can be done if you just take action.

Here's a great first article. https://www.biggerpockets.com/renewsblog/2015/12/17/actionable-steps-reach-investing-goals/

You need to send a good mail piece (something compelling that calls to action), that stands out from the rest and gets your phone to ring. 

I am building a checklist and points of contact from all the post, building an action plan.  

There is a structure to decline applicants based on the Adverse Action Letter.

Part of my hesitance to dip into Oakland, given prices today.good luck though, and be careful if you're going to take action against your tenant without excellent legal advice.

I decided to buy my first home study course in august and have been taking action ever since.

(which applies to most units but not sure about section 8 yet). for a unit to be removed from rental, renovated, demolished or occupied by the landlord in much shorter time periods depending upon the actual action.

You're going to learn a lot more by getting your hands dirty and taking action.