If they pass that smell test and fit our other criteria then it's usually a good fit. 

Renting  rooms is almost always more profitable than renting entire suites or houses.

You’ll sign a piece of paper at closing saying you plan to live there ], usually within 30-60 days.

Other than the classes I am running for the hills!

I sold them over the next couple years to the tenants and I am glad I did.

Since this situation was so egregious (IMO), I would either boot them out now, or at least have a serious talk, real serious....If you're going to let them stay I would just get a really deep cleaning done, maybe a couple, and then replace carpet after they're gone.

Can usually allot 5-10% vacancy factor and same for maintenance.Class B usually also okay, but needs more attention from owner and/or PMC.

In many cases, vacant land is cheaper than land with an older home.(3) Construction. 

My maintenance is usually less then 1k per year., We replace the roof, and HVAC if 10 years or older.

Are you focusing on your construction business more than real estate syndication?