Don't be intimidated by his idle threats or fear that he will enlist the aid of his parents.4.

Even if you have to sell before the 2-year mark as required by sec 121 rules because of health, work, or some unforeseen circumstances, you might still able to avoid tax.

Google Dangerous or threating dogs.

There is a recovery/behavioral health building down there that seems to be holding the neighborhood back a bit.

I don't yet know about the health of the seller but this could be an interesting exercise even if I don't purchase.

Congratulations on the upcoming baby and hopes to great health.

Threats are likely not going to work with a person like this.

There’s a book by Gavin de Becker “The gift of Fear” that has some good advice on dealing with people who make threats of any type.  

If they're on disability and don't have a job or a large volunteer commitment and they're not obviously physically disabled, get a full confidentiality release of their mental health history so you can determine if you can cope with having them as a tenant. 

This time, the HOA's letter and threat to start issuing daily fines sounds severe enough.