The goal for the SFR is to build another unit in the back (15,000 sq ft lot), which is permitted, according to local code.

I have put in my zip codes and additional requirements such as equity percentage and owners age. 

You should figure out what your Niche and Strategy would be first.The Best Beginner’s Real Estate Investing Course OnlineModule 3 explains Niches and Strategies.I will be Flipping Single Family Houses (to make Cash) and reinvesting that cash in additional flips and also Buy and Hold Single Family Houses and Small Multi Families up to 4-plex for long term.I have not narrowed down my Area (Zip Code) yet.You could also House Hack your first Property while LearningHere is another post similar to yours:https://www.biggerpockets.com/forums/12/topics/413684-i-pondering-what-to-do-next-want-to-make-a-good-investmenthttps://www.biggerpockets.com/forums/12/topics/413149-what-direction-should-this-newcomer-go

This disclosure is required by TREC rules.The Code of Ethics outlines similar requirements in Article 4 and Standard of Practice 4-1.

Study the codes first then come back for clarification if needed.

I haven't dealt with unpermitted areas before so I am looking for some advice on how much it will cost to bring them to code as the two enclosed patios will add 659 sqft. of living space taking the sale price from 235,000 to 250,000.

It's your property, you may choose any applicant you wish, within the housing police codes, and do not give a reason when rejecting unless your state codes require it.Bigger problems arise when a landlord chooses tenants based on anything other than most qualified as there screening criteria outlines.

You could adjust that up if your codes allow. 

@Sean Bell Go to the Rutherford County website, Planning and Engineering, and download the Zoning Ordinance and also look for Building Codes or Subdivision regulations.

The deal with them is a flat fee of 100.00 total to list on the MLS and they list it with all the FSBO sites and I use my own number with them so all prospective buyers have to call me to give them lockbox codes so I have full control of the listing.