Rent my house and build smaller? Greenville, SC

[Dallas Garrison]

Hi guys! New around here and wanted some advice. We have a pretty large lot, .71 acre and are thinking about building a tiny/small house on the back side of our lot and renting our current house(3 bed 2 bath) either through airbnb or traditional tenants. Still waiting to here back from building and zoning if I'm able to do an accessory dwelling or if I need to split the parcel and build a separate single family. 

Any advice? Thanks!

Dallas