Such as the desire to have impact windows, hip roofs, better drainage, the age of the roof ect.

You mentioned you have your license , did you represent yourself (as buyer) and receive a commission for purchasing the property?

This data will be populated into a pre-set table within the databaseScript 2: Compile all data from the table mentioned above, and retrieve all information relevant to that property.

The seller simply did not collect security deposits for three of the four units and did not mention this fact at any point up until now. 

A local investor in Denver with whom I’ve spoken on a few occasions mentioned recently that he has three residential properties he wants to unload. 

For the most part that is true however, after reading a book called "The Deallionaire" by investor John Lee from Missouri (He was a guest on the Jennifer Hammond show), He talks about selling properties that he has bought  for less than $1000 using both conventional and unconventional means such as advertising a property via craigslist, social media marketing or selling through realtors and word of mouth.I'm mainly looking to venture into North Carolina, South Carolina, Georgia, Texas and possible New Jersey for this.I have heard both John Lee and Ankit Duggal (A guest on Bigger Pockets show) mention buying into tax deed/tax liens AFTER the main auctions by simply requesting a list of properties that were still unsold. 

You forgot to mention that they bully you to access their trusted website to pull your credit score for them to set you up to borrow the $20,000 to $40,000 to purchase their advanced training. 

As I have already mentioned I enjoy seeing how some people dress.

Looking around for real estate in central Maryland I'm finding some weird stuff of people posting about duplex's for sale but seemingly only focusing on one side of the property and never implying or mentioning the second side.

Your example is 101,750 a year cash flow over the 20 year period you mentioned....and as I noted you are basically eating your principal all that time and have little left when you sell at that point....NNN leases are out.From your example:"$2,035,000 Accumulated Cash Flow (NOI)"