They would call after hours, and leave long, meandering voicemails (I would never answer).I've curbed my enthusiasm since, however, and "feel the neighbor out" for mental stability before offering my business email only. 

You are ready to kick this guy and his whole family to the curb before he's had a chance to tell his side of the story in a court of law. 

There is also some exterior work needed to boost the curb appeal.

Is it possible they are driving by and noticing bad curb appeal? 

Using those services help to curb the liability as they do credit card id verification.

Start with the "curb appeal" and place a sign out front that says "Coming Soon" and your phone number.

At take over, we improved the exterior/ curb appeal (below is the Before & After pictures)Before Take OverAfter renovating the exterior2.

To attract better quality tenants, it may be worth it to have professional photos of your unit taken, really focus on curb appeal, and make sure your unit is priced fairly.

I say a person on lease or even John Doe and all occupants on the eviction.If they don't have the utilities on, I call code enforcement and they will set everyone on curb in 24 hours.

Can create off-street parking with curb cut already there from a 100 years ago, or create great backyard with porch etc.With yards being eaten alive with ADU's and all seems yards should be a premium.