It depends on what their goal is. If they want to sell both properties at the same time (or if they want to start with just one), they can contact a REALTOR to begin the process & get an idea of market conditions & pricing strategies. I have family in Toccoa and know the location well. It is possible for them to work with an agent that is licensed in both SC & GA. Also, I would recommend interviewing 2-3 agents to determine the best fit for them. If you would like I would be happy to put you/your parents in contact with a top agent in the area.
Let me know if I can be of service.
Best of Luck!
Coldwell Banker Residential Brokerage