I know a bank typically asks you if the property has been rented for more than two years to treat it as an investment.

And all invests should be treated like a business if success is the goal.

Worst case, they can be treated with a mildewcide to help ensure no mold growth.

A couple can elect to be treated as a Qualified joint venture.

@Michael Pursell following up on @Charlie MacPherson good comment you also may want to pay attention to the exact wording of this stuff and how its individually interpreted by the various building departments: Accessory Dwelling Unit, In-Law and other terms may mean something slightly different town by town and be treated differently, likewise if you owner occupy or not. 

They have been good tenants, so I want to treat them right as well.  

super rough area at those price pointsOKC = pretty stable but economy and strength of market are not the best.alternatives to check  Indy  low tax ripping economy and tenant base and 100k buys you a nice home  do NOT buy 50k or under homes in any major MSA those are the hood plain and simple.out skirts of Cleveland we are finding are treating us well..

As far as Tenant turnover, treat it like any business!

This is why you need to get a website and treat SEO seriously.. or else!

Yes, Atlanta and RTP are also in the fray.But Georgia will loose because of the way state government is currently treating Delta.