When I am evaluating a property you have the standard PITI = Principal, Interest, Taxes and Insurance. 

My company has very extensive internal reports on market revenue expectations, so finding a rep in the area you are looking, and contacting my company to get connected with that rep would be a free option as well.

Not a ton of job growth, just your standard bedroom community.

It is so hard for me to hold back on not replacing something, just so it looks newer or more trendy (for example, swapping light fixtures and door knobs when the ones there might be okay .... or wanting to swap all switches and outlets to Decora when the standard ones already there just need to be cleaned real good). 

More money to make but also more risk than your standard residential.Sounds like you've probably got a decent amount of capital given your portfolio, but I'd look long and hard at fully switching over and putting all your eggs into one or two baskets.

The lease I use requires any added occupants go through standard screening process and boyfriend would fail that screen. 

While my helper was on your standard rental showing appointment, talking with another interested party, a young woman unlocked the window in one of the bedrooms in the back of the house and the top part of the window slammed down on her fingers.

The appearance of the structure shall remain that of a single-family residence and there shall be an internal means of egress between the principal unit and the accessory family dwelling unit.

Tenants learn from our behaviors, we set the the standard.

Also what has helped me with personal growth is learning to be internally happy.