You came to the right place to learn and further investigate investing in real estate.

Our tax assessor's policy is that owner occupied homes, including duplexes will be zoned multifamily so the tax office really don't care/investigate about house hacking.

We sent a plumber to investigate.

The State of Florida investigators with DBPR calls people VICTIMS that end up dealing with these types of operators.SEE MY POST TITLED SHTF---the true story of how I help an uneducated sellers get out of the clutches of one of these operators.

Most states require you to personally submitt the grevience and the board will investigate to see if USPAP was followed in the value opinion. 

I am newer to the platform and have recently started investigating into property investment companies in Memphis Tn.

Some resources to investigate are local savings & loans, credit unions, and even your local REI meetup (for private money lenders).

As far as licensed or not the same agency is going to be doing the investigation if someone feels taken advantage across the line. 

I would investigate what the motives are for such long contingencies.

So the next bit of homework is for you to investigate the software that is available to help you manage.