He is a male in his 40's with a teenage daughter and a younger son.  

Since I was a teenager, that area has had a bad reputation.

Back in the day as a teenager, my husband had some health issues and ended up with bills in collections since he didn't have health insurance.

If a teenager is 18+ y/o they should be screened no different than the parents. 

She also lives there with her teenage daughter.....Who out there is able to get me a great policy for a reasonable cost?

Average maintenance costs are 10% of annual income, so deduct another $2,000 (older houses with teenage Tenants will cost more).

Maybe one of the triplex units has 2 full bathrooms and the current SFR has 1.5, but one of the kids is now a teenager and needs her/his bathroom time so they can apply 5 lbs of hairspray (or whatever it is teenagers do these days).

Let me start off by saying that I've been researching real estate investing since I was a teenager and pursued construction to learn how to renovate the houses myself.

I see teenagers hanging on the porches of the abandoned houses.

I did have one complaint , wife stayed home with 2 lazy teenagers .