I had a call yesterday with a rep that made me feel confident, but not quite ready to pull the trigger just yet until getting more verified reviews of their track record of returns and service.

You would have ongoing filing requirements with the State and would need to keep business records and documentation.

It is good that you have reported this to the state which will have implications on their license.In addition, I would consider sending them specific emails (for your records) and rekeying the properties and gaining access to them. 

The zoning record says it is in an unincorporated tax district. 2) A home in Kennesaw that is also zoned for single family.I see online that there is conflicting info, where in DeKalb county, 3 unrelated people can live together, but Decatur shows 2 unrelated people.

These are all public record and you can find the builder who will lead you to the developer if they are different people.

Use some sort of app to record and track tenant communications.

A common trait among my superiors was you either had a drug and alcohol program, criminal record or atleast one diverse.

I was going to ask him to see all of the receipts, and get copies of them for our records, and to ask for a lien waiver so his subs don’t come back to me asking to be paid if he still owes them money.Does anyone have any recommendations, besides hiring an attorney, to make this situation a little better?

Quote from @Brett Deas: I invested with a syndicator because he had a proven track record of success.

The septic information on the existing property is public record. look up the property on NHDES website.