Am I supposed to return his deposit money within 30 days of him leaving?

If you end up looking out our direction feel free to reach out, i am an investor and agent.

I am less clear on when I do my depreciation recovery (that year of the sale?)

I am looking at a property in a semi rural area in NW Georgia. 

If they continue to harass me via email (for payments I am not delinquent on) do I have any legal recourse against them and conventus. shellpoint is their agent so am I correct in believing they are responsible for the actions of shellpoint?

I am planning to do some flipping projects in the South Bay.

I know that I am not the first one to make a post like this so I understand how bringing value to the table can differentiate me from someone else in a similar situation.

I am currently operating my mid-term rental in Hollywood, FL.

Im not sure about your area but where I am you have to also make sure the zoning of the neighborhood allows multi family properties.   

I am sorry the issues you are having.