It's possible what you have done on your own isn't even to code or done correctly so you could be losing value if you haven't been careful.It's great that you took action.

I have been using the BIS site, and as Llewelyn mentioned, the Dept of Finance tax code is 2 family, but no CofO from DOB to support. 

What ghetto city/zip code in AR did you find 2% rule? 

Requiring a real estate license can potentially be a “trap” for wholesaling, as real estate licensees may in in violation of their code of conduct by way of their wholesaling activities.  

You are subject to new building codes.

Our city code requires a method of egress for 3rd Floor units.

But you will want to change the code for access right away as fired contractors can come back and take materials from you for other jobs.

I think if you understand the price per unit as well as the price per square foot in the zip code and nearby zip codes that will give you a good idea of the comparable market analysis approach and appraiser might use.

Be sure to review property tax statements and verify any zoning or code compliance documentation.

Example: I define what zip codes (or neighborhoods) that I buy in.