@Chris Eaker, I was sort of thinking to have the alarm system reconnected, since the neighborhood isn't amazing.

Like a thief in the night they moved out of my home on November 5th.

You don't need a crow bar in the head from a thief. the property is not worth it.  

Consider an alarm or video recording system.

In retrospect, this was my first rental and I ignored several signs of potential alarm bells.

Each unit needs to be registered every year (unless owner occupied), rent cannot be increased more than a few percent (set by New Brunswick).2) The township does yearly fire inspections (check smoke alarms, fire extinguishers, and can fine you for locks on bedroom doors)3) The township does 3 year housing inspections.

We just remodeled and have an alarm system, big lot, so the price seems fair to market.The neighbor had been living in her grandmother's winter home, paying rent, and thought she would be there for another year.

I would recommend swapping out smoke and CO alarms with the newer 10-year sealed ones.

You can read alot of books and listen to a bankers opinion all day but what help are they going to be when you enter a unit for a filter change and smoke alarm battery check and you discover things like tenant has moved in a roommate, are those bedbugs on the wall, why is there a pet tiger in the bedroom...etc...You will need a voice to call to say what in the hell do I do?

Gutter cleaning, furnance checks fire extinguishers, smoke alarms.