It turned out to be a distressed seller who needed to offload their home quickly.

I've searched this forum but couldn't find much information on this.

I’m looking to purchase a duplex in Charlotte, with one unit being turn-key and the other in need of repairs.

Most of the issues that an owner needs answers for don't need to be done within 24hrs, but it makes them feel more comfortable when you pick up on the first ring or respond to email/texts in a few minutes.Trust.

Also:"The issue of how much you can charge as a late rent penalty depends on local and state legislation.

This one when all is said and done needs around $90,000 in work.

If you want to be a lender, you need to consider the risk/reward. 

I need some helps and willing to listen for any advices on different path please.

I would do some research on square footage and road frontage needed for parceling off additional lots (STR the house, sell off or build on additional lots).

There was some speculation a few years back that it was heading in a much better direction and there was building and improvements being made and businesses moving in.