I think the link is BiggerPockets.com/events and put in your zip code.

State tax code is usually not too big a thing for an experienced CPA any where. 

I still would not apply to me...per the definition of "commercial solicitation" in the state code at https://www.scstatehouse.gov/code/t30c002.php(3) "Commercial solicitation" means contact by telephone, mail, or electronic mail for the purpose of selling or marketing a consumer product or service.I am in no way warketing a consumer product...or to consumers for that matter...

I live in a community where container development is appealing because it allows us to circumvent local building codes and deal directly with the State.

From what I'm being told, this addition has been built to code and although this will be confirmed once the inspection is complete, I am trying to better understand the process to convert this property into a legal duplex.

@Matthew Wilson keep in mind that many inspections result in changes to comply with code.

We love Fl in winter but every one we meet is over run by extra permits and stalked by code enforcement trolls.This is almost a joke, we're taking a walk, a guy is adding a couple screws to a window, A passing car pulls up a block away and hides taking pictures .. weird 

Codified in the Code? 

The actual land use code is GOV.65852.2(f)(3). 

Something to keep in mind is that the actually county inspectors are quite versed in walking homeowners through the steps, area building codes are easily available online, and there are some very high quality contractors with YouTube channels now showing most everything.